diff options
| author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-05 14:55:20 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-05 14:55:20 -0700 |
| commit | ea62ccd00fd0b6720b033adfc9984f31130ce195 (patch) | |
| tree | 9837b797b2466fffcb0af96c388b06eae9c3df18 /arch/x86_64 | |
| parent | 886a0768affe9a32f18c45f8e1393bca9ece5392 (diff) | |
| parent | 35060b6a9a4e1c89bc6fbea61090e302dbc61847 (diff) | |
| download | op-kernel-dev-ea62ccd00fd0b6720b033adfc9984f31130ce195.zip op-kernel-dev-ea62ccd00fd0b6720b033adfc9984f31130ce195.tar.gz | |
Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6
* 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6: (231 commits)
[PATCH] i386: Don't delete cpu_devs data to identify different x86 types in late_initcall
[PATCH] i386: type may be unused
[PATCH] i386: Some additional chipset register values validation.
[PATCH] i386: Add missing !X86_PAE dependincy to the 2G/2G split.
[PATCH] x86-64: Don't exclude asm-offsets.c in Documentation/dontdiff
[PATCH] i386: avoid redundant preempt_disable in __unlazy_fpu
[PATCH] i386: white space fixes in i387.h
[PATCH] i386: Drop noisy e820 debugging printks
[PATCH] x86-64: Fix allnoconfig error in genapic_flat.c
[PATCH] x86-64: Shut up warnings for vfat compat ioctls on other file systems
[PATCH] x86-64: Share identical video.S between i386 and x86-64
[PATCH] x86-64: Remove CONFIG_REORDER
[PATCH] x86-64: Print type and size correctly for unknown compat ioctls
[PATCH] i386: Remove copy_*_user BUG_ONs for (size < 0)
[PATCH] i386: Little cleanups in smpboot.c
[PATCH] x86-64: Don't enable NUMA for a single node in K8 NUMA scanning
[PATCH] x86: Use RDTSCP for synchronous get_cycles if possible
[PATCH] i386: Add X86_FEATURE_RDTSCP
[PATCH] i386: Implement X86_FEATURE_SYNC_RDTSC on i386
[PATCH] i386: Implement alternative_io for i386
...
Fix up trivial conflict in include/linux/highmem.h manually.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/x86_64')
64 files changed, 1798 insertions, 5509 deletions
diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig index e9b4f05..145bb82 100644 --- a/arch/x86_64/Kconfig +++ b/arch/x86_64/Kconfig @@ -415,13 +415,13 @@ config OUT_OF_LINE_PFN_TO_PAGE depends on DISCONTIGMEM config NR_CPUS - int "Maximum number of CPUs (2-256)" + int "Maximum number of CPUs (2-255)" range 2 255 depends on SMP default "8" help This allows you to specify the maximum number of CPUs which this - kernel will support. Current maximum is 256 CPUs due to + kernel will support. Current maximum is 255 CPUs due to APIC addressing limits. Less depending on the hardware. This is purely to save memory - each supported CPU requires @@ -565,23 +565,56 @@ config CRASH_DUMP PHYSICAL_START. For more details see Documentation/kdump/kdump.txt +config RELOCATABLE + bool "Build a relocatable kernel(EXPERIMENTAL)" + depends on EXPERIMENTAL + help + Builds a relocatable kernel. This enables loading and running + a kernel binary from a different physical address than it has + been compiled for. + + One use is for the kexec on panic case where the recovery kernel + must live at a different physical address than the primary + kernel. + + Note: If CONFIG_RELOCATABLE=y, then kernel run from the address + it has been loaded at and compile time physical address + (CONFIG_PHYSICAL_START) is ignored. + config PHYSICAL_START hex "Physical address where the kernel is loaded" if (EMBEDDED || CRASH_DUMP) - default "0x1000000" if CRASH_DUMP default "0x200000" help - This gives the physical address where the kernel is loaded. Normally - for regular kernels this value is 0x200000 (2MB). But in the case - of kexec on panic the fail safe kernel needs to run at a different - address than the panic-ed kernel. This option is used to set the load - address for kernels used to capture crash dump on being kexec'ed - after panic. The default value for crash dump kernels is - 0x1000000 (16MB). This can also be set based on the "X" value as + This gives the physical address where the kernel is loaded. It + should be aligned to 2MB boundary. + + If kernel is a not relocatable (CONFIG_RELOCATABLE=n) then + bzImage will decompress itself to above physical address and + run from there. Otherwise, bzImage will run from the address where + it has been loaded by the boot loader and will ignore above physical + address. + + In normal kdump cases one does not have to set/change this option + as now bzImage can be compiled as a completely relocatable image + (CONFIG_RELOCATABLE=y) and be used to load and run from a different + address. This option is mainly useful for the folks who don't want + to use a bzImage for capturing the crash dump and want to use a + vmlinux instead. + + So if you are using bzImage for capturing the crash dump, leave + the value here unchanged to 0x200000 and set CONFIG_RELOCATABLE=y. + Otherwise if you plan to use vmlinux for capturing the crash dump + change this value to start of the reserved region (Typically 16MB + 0x1000000). In other words, it can be set based on the "X" value as specified in the "crashkernel=YM@XM" command line boot parameter passed to the panic-ed kernel. Typically this parameter is set as crashkernel=64M@16M. Please take a look at Documentation/kdump/kdump.txt for more details about crash dumps. + Usage of bzImage for capturing the crash dump is advantageous as + one does not have to build two kernels. Same kernel can be used + as production kernel and capture kernel. + Don't change this unless you know what you are doing. config SECCOMP @@ -627,14 +660,6 @@ config CC_STACKPROTECTOR_ALL source kernel/Kconfig.hz -config REORDER - bool "Function reordering" - default n - help - This option enables the toolchain to reorder functions for a more - optimal TLB usage. If you have pretty much any version of binutils, - this can increase your kernel build time by roughly one minute. - config K8_NB def_bool y depends on AGP_AMD64 || IOMMU || (PCI && NUMA) diff --git a/arch/x86_64/Makefile b/arch/x86_64/Makefile index 2941a91..29617ae 100644 --- a/arch/x86_64/Makefile +++ b/arch/x86_64/Makefile @@ -40,10 +40,6 @@ cflags-y += -m64 cflags-y += -mno-red-zone cflags-y += -mcmodel=kernel cflags-y += -pipe -cflags-kernel-$(CONFIG_REORDER) += -ffunction-sections -# this makes reading assembly source easier, but produces worse code -# actually it makes the kernel smaller too. -cflags-y += -fno-reorder-blocks cflags-y += -Wno-sign-compare cflags-y += -fno-asynchronous-unwind-tables ifneq ($(CONFIG_DEBUG_INFO),y) diff --git a/arch/x86_64/boot/Makefile b/arch/x86_64/boot/Makefile index deb063e..ee6f650 100644 --- a/arch/x86_64/boot/Makefile +++ b/arch/x86_64/boot/Makefile @@ -36,7 +36,7 @@ subdir- := compressed/ #Let make clean descend in compressed/ # --------------------------------------------------------------------------- $(obj)/bzImage: IMAGE_OFFSET := 0x100000 -$(obj)/bzImage: EXTRA_AFLAGS := -traditional $(SVGA_MODE) $(RAMDISK) -D__BIG_KERNEL__ +$(obj)/bzImage: EXTRA_AFLAGS := $(SVGA_MODE) $(RAMDISK) -D__BIG_KERNEL__ $(obj)/bzImage: BUILDFLAGS := -b quiet_cmd_image = BUILD $@ diff --git a/arch/x86_64/boot/compressed/Makefile b/arch/x86_64/boot/compressed/Makefile index e70fa6e..705a3e3 100644 --- a/arch/x86_64/boot/compressed/Makefile +++ b/arch/x86_64/boot/compressed/Makefile @@ -8,16 +8,14 @@ targets := vmlinux vmlinux.bin vmlinux.bin.gz head.o misc.o piggy.o EXTRA_AFLAGS := -traditional -AFLAGS := $(subst -m64,-m32,$(AFLAGS)) # cannot use EXTRA_CFLAGS because base CFLAGS contains -mkernel which conflicts with # -m32 -CFLAGS := -m32 -D__KERNEL__ -Iinclude -O2 -fno-strict-aliasing -LDFLAGS := -m elf_i386 +CFLAGS := -m64 -D__KERNEL__ -Iinclude -O2 -fno-strict-aliasing -fPIC -mcmodel=small -fno-builtin +LDFLAGS := -m elf_x86_64 -LDFLAGS_vmlinux := -Ttext $(IMAGE_OFFSET) -e startup_32 -m elf_i386 - -$(obj)/vmlinux: $(obj)/head.o $(obj)/misc.o $(obj)/piggy.o FORCE +LDFLAGS_vmlinux := -T +$(obj)/vmlinux: $(src)/vmlinux.lds $(obj)/head.o $(obj)/misc.o $(obj)/piggy.o FORCE $(call if_changed,ld) @: @@ -27,7 +25,7 @@ $(obj)/vmlinux.bin: vmlinux FORCE $(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE $(call if_changed,gzip) -LDFLAGS_piggy.o := -r --format binary --oformat elf32-i386 -T +LDFLAGS_piggy.o := -r --format binary --oformat elf64-x86-64 -T $(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.gz FORCE $(call if_changed,ld) diff --git a/arch/x86_64/boot/compressed/head.S b/arch/x86_64/boot/compressed/head.S index 6f55565..f9d5692 100644 --- a/arch/x86_64/boot/compressed/head.S +++ b/arch/x86_64/boot/compressed/head.S @@ -26,116 +26,279 @@ #include <linux/linkage.h> #include <asm/segment.h> +#include <asm/pgtable.h> #include <asm/page.h> +#include <asm/msr.h> +.section ".text.head" .code32 .globl startup_32 - + startup_32: cld cli - movl $(__KERNEL_DS),%eax - movl %eax,%ds - movl %eax,%es - movl %eax,%fs - movl %eax,%gs - - lss stack_start,%esp - xorl %eax,%eax -1: incl %eax # check that A20 really IS enabled - movl %eax,0x000000 # loop forever if it isn't - cmpl %eax,0x100000 - je 1b + movl $(__KERNEL_DS), %eax + movl %eax, %ds + movl %eax, %es + movl %eax, %ss + +/* Calculate the delta between where we were compiled to run + * at and where we were actually loaded at. This can only be done + * with a short local call on x86. Nothing else will tell us what + * address we are running at. The reserved chunk of the real-mode + * data at 0x34-0x3f are used as the stack for this calculation. + * Only 4 bytes are needed. + */ + leal 0x40(%esi), %esp + call 1f +1: popl %ebp + subl $1b, %ebp + +/* setup a stack and make sure cpu supports long mode. */ + movl $user_stack_end, %eax + addl %ebp, %eax + movl %eax, %esp + + call verify_cpu + testl %eax, %eax + jnz no_longmode + +/* Compute the delta between where we were compiled to run at + * and where the code will actually run at. + */ +/* %ebp contains the address we are loaded at by the boot loader and %ebx + * contains the address where we should move the kernel image temporarily + * for safe in-place decompression. + */ + +#ifdef CONFIG_RELOCATABLE + movl %ebp, %ebx + addl $(LARGE_PAGE_SIZE -1), %ebx + andl $LARGE_PAGE_MASK, %ebx +#else + movl $CONFIG_PHYSICAL_START, %ebx +#endif + + /* Replace the compressed data size with the uncompressed size */ + subl input_len(%ebp), %ebx + movl output_len(%ebp), %eax + addl %eax, %ebx + /* Add 8 bytes for every 32K input block */ + shrl $12, %eax + addl %eax, %ebx + /* Add 32K + 18 bytes of extra slack and align on a 4K boundary */ + addl $(32768 + 18 + 4095), %ebx + andl $~4095, %ebx /* - * Initialize eflags. Some BIOS's leave bits like NT set. This would - * confuse the debugger if this code is traced. - * XXX - best to initialize before switching to protected mode. + * Prepare for entering 64 bit mode */ - pushl $0 - popfl + + /* Load new GDT with the 64bit segments using 32bit descriptor */ + leal gdt(%ebp), %eax + movl %eax, gdt+2(%ebp) + lgdt gdt(%ebp) + + /* Enable PAE mode */ + xorl %eax, %eax + orl $(1 << 5), %eax + movl %eax, %cr4 + + /* + * Build early 4G boot pagetable + */ + /* Initialize Page tables to 0*/ + leal pgtable(%ebx), %edi + xorl %eax, %eax + movl $((4096*6)/4), %ecx + rep stosl + + /* Build Level 4 */ + leal pgtable + 0(%ebx), %edi + leal 0x1007 (%edi), %eax + movl %eax, 0(%edi) + + /* Build Level 3 */ + leal pgtable + 0x1000(%ebx), %edi + leal 0x1007(%edi), %eax + movl $4, %ecx +1: movl %eax, 0x00(%edi) + addl $0x00001000, %eax + addl $8, %edi + decl %ecx + jnz 1b + + /* Build Level 2 */ + leal pgtable + 0x2000(%ebx), %edi + movl $0x00000183, %eax + movl $2048, %ecx +1: movl %eax, 0(%edi) + addl $0x00200000, %eax + addl $8, %edi + decl %ecx + jnz 1b + + /* Enable the boot page tables */ + leal pgtable(%ebx), %eax + movl %eax, %cr3 + + /* Enable Long mode in EFER (Extended Feature Enable Register) */ + movl $MSR_EFER, %ecx + rdmsr + btsl $_EFER_LME, %eax + wrmsr + + /* Setup for the jump to 64bit mode + * + * When the jump is performend we will be in long mode but + * in 32bit compatibility mode with EFER.LME = 1, CS.L = 0, CS.D = 1 + * (and in turn EFER.LMA = 1). To jump into 64bit mode we use + * the new gdt/idt that has __KERNEL_CS with CS.L = 1. + * We place all of the values on our mini stack so lret can + * used to perform that far jump. + */ + pushl $__KERNEL_CS + leal startup_64(%ebp), %eax + pushl %eax + + /* Enter paged protected Mode, activating Long Mode */ + movl $0x80000001, %eax /* Enable Paging and Protected mode */ + movl %eax, %cr0 + + /* Jump from 32bit compatibility mode into 64bit mode. */ + lret + +no_longmode: + /* This isn't an x86-64 CPU so hang */ +1: + hlt + jmp 1b + +#include "../../kernel/verify_cpu.S" + + /* Be careful here startup_64 needs to be at a predictable + * address so I can export it in an ELF header. Bootloaders + * should look at the ELF header to find this address, as + * it may change in the future. + */ + .code64 + .org 0x200 +ENTRY(startup_64) + /* We come here either from startup_32 or directly from a + * 64bit bootloader. If we come here from a bootloader we depend on + * an identity mapped page table being provied that maps our + * entire text+data+bss and hopefully all of memory. + */ + + /* Setup data segments. */ + xorl %eax, %eax + movl %eax, %ds + movl %eax, %es + movl %eax, %ss + + /* Compute the decompressed kernel start address. It is where + * we were loaded at aligned to a 2M boundary. %rbp contains the + * decompressed kernel start address. + * + * If it is a relocatable kernel then decompress and run the kernel + * from load address aligned to 2MB addr, otherwise decompress and + * run the kernel from CONFIG_PHYSICAL_START + */ + + /* Start with the delta to where the kernel will run at. */ +#ifdef CONFIG_RELOCATABLE + leaq startup_32(%rip) /* - $startup_32 */, %rbp + addq $(LARGE_PAGE_SIZE - 1), %rbp + andq $LARGE_PAGE_MASK, %rbp + movq %rbp, %rbx +#else + movq $CONFIG_PHYSICAL_START, %rbp + movq %rbp, %rbx +#endif + + /* Replace the compressed data size with the uncompressed size */ + movl input_len(%rip), %eax + subq %rax, %rbx + movl output_len(%rip), %eax + addq %rax, %rbx + /* Add 8 bytes for every 32K input block */ + shrq $12, %rax + addq %rax, %rbx + /* Add 32K + 18 bytes of extra slack and align on a 4K boundary */ + addq $(32768 + 18 + 4095), %rbx + andq $~4095, %rbx + +/* Copy the compressed kernel to the end of our buffer + * where decompression in place becomes safe. + */ + leaq _end(%rip), %r8 + leaq _end(%rbx), %r9 + movq $_end /* - $startup_32 */, %rcx +1: subq $8, %r8 + subq $8, %r9 + movq 0(%r8), %rax + movq %rax, 0(%r9) + subq $8, %rcx + jnz 1b + +/* + * Jump to the relocated address. + */ + leaq relocated(%rbx), %rax + jmp *%rax + +.section ".text" +relocated: + /* * Clear BSS */ - xorl %eax,%eax - movl $_edata,%edi - movl $_end,%ecx - subl %edi,%ecx + xorq %rax, %rax + leaq _edata(%rbx), %rdi + leaq _end(%rbx), %rcx + subq %rdi, %rcx cld rep stosb + + /* Setup the stack */ + leaq user_stack_end(%rip), %rsp + + /* zero EFLAGS after setting rsp */ + pushq $0 + popfq + /* * Do the decompression, and jump to the new kernel.. */ - subl $16,%esp # place for structure on the stack - movl %esp,%eax - pushl %esi # real mode pointer as second arg - pushl %eax # address of structure as first arg - call decompress_kernel - orl %eax,%eax - jnz 3f - addl $8,%esp - xorl %ebx,%ebx - ljmp $(__KERNEL_CS), $__PHYSICAL_START + pushq %rsi # Save the real mode argument + movq %rsi, %rdi # real mode address + leaq _heap(%rip), %rsi # _heap + leaq input_data(%rip), %rdx # input_data + movl input_len(%rip), %eax + movq %rax, %rcx # input_len + movq %rbp, %r8 # output + call decompress_kernel + popq %rsi -/* - * We come here, if we were loaded high. - * We need to move the move-in-place routine down to 0x1000 - * and then start it with the buffer addresses in registers, - * which we got from the stack. - */ -3: - movl %esi,%ebx - movl $move_routine_start,%esi - movl $0x1000,%edi - movl $move_routine_end,%ecx - subl %esi,%ecx - addl $3,%ecx - shrl $2,%ecx - cld - rep - movsl - - popl %esi # discard the address - addl $4,%esp # real mode pointer - popl %esi # low_buffer_start - popl %ecx # lcount - popl %edx # high_buffer_start - popl %eax # hcount - movl $__PHYSICAL_START,%edi - cli # make sure we don't get interrupted - ljmp $(__KERNEL_CS), $0x1000 # and jump to the move routine /* - * Routine (template) for moving the decompressed kernel in place, - * if we were high loaded. This _must_ PIC-code ! + * Jump to the decompressed kernel. */ -move_routine_start: - movl %ecx,%ebp - shrl $2,%ecx - rep - movsl - movl %ebp,%ecx - andl $3,%ecx - rep - movsb - movl %edx,%esi - movl %eax,%ecx # NOTE: rep movsb won't move if %ecx == 0 - addl $3,%ecx - shrl $2,%ecx - rep - movsl - movl %ebx,%esi # Restore setup pointer - xorl %ebx,%ebx - ljmp $(__KERNEL_CS), $__PHYSICAL_START -move_routine_end: + jmp *%rbp - -/* Stack for uncompression */ - .align 32 -user_stack: + .data +gdt: + .word gdt_end - gdt + .long gdt + .word 0 + .quad 0x0000000000000000 /* NULL descriptor */ + .quad 0x00af9a000000ffff /* __KERNEL_CS */ + .quad 0x00cf92000000ffff /* __KERNEL_DS */ +gdt_end: + .bss +/* Stack for uncompression */ + .balign 4 +user_stack: .fill 4096,4,0 -stack_start: - .long user_stack+4096 - .word __KERNEL_DS - +user_stack_end: diff --git a/arch/x86_64/boot/compressed/misc.c b/arch/x86_64/boot/compressed/misc.c index 3755b2e..f932b0e 100644 --- a/arch/x86_64/boot/compressed/misc.c +++ b/arch/x86_64/boot/compressed/misc.c @@ -9,10 +9,95 @@ * High loaded stuff by Hans Lermen & Werner Almesberger, Feb. 1996 */ +#define _LINUX_STRING_H_ 1 +#define __LINUX_BITMAP_H 1 + +#include <linux/linkage.h> #include <linux/screen_info.h> #include <asm/io.h> #include <asm/page.h> +/* WARNING!! + * This code is compiled with -fPIC and it is relocated dynamically + * at run time, but no relocation processing is performed. + * This means that it is not safe to place pointers in static structures. + */ + +/* + * Getting to provable safe in place decompression is hard. + * Worst case behaviours need to be analized. + * Background information: + * + * The file layout is: + * magic[2] + * method[1] + * flags[1] + * timestamp[4] + * extraflags[1] + * os[1] + * compressed data blocks[N] + * crc[4] orig_len[4] + * + * resulting in 18 bytes of non compressed data overhead. + * + * Files divided into blocks + * 1 bit (last block flag) + * 2 bits (block type) + * + * 1 block occurs every 32K -1 bytes or when there 50% compression has been achieved. + * The smallest block type encoding is always used. + * + * stored: + * 32 bits length in bytes. + * + * fixed: + * magic fixed tree. + * symbols. + * + * dynamic: + * dynamic tree encoding. + * symbols. + * + * + * The buffer for decompression in place is the length of the + * uncompressed data, plus a small amount extra to keep the algorithm safe. + * The compressed data is placed at the end of the buffer. The output + * pointer is placed at the start of the buffer and the input pointer + * is placed where the compressed data starts. Problems will occur + * when the output pointer overruns the input pointer. + * + * The output pointer can only overrun the input pointer if the input + * pointer is moving faster than the output pointer. A condition only + * triggered by data whose compressed form is larger than the uncompressed + * form. + * + * The worst case at the block level is a growth of the compressed data + * of 5 bytes per 32767 bytes. + * + * The worst case internal to a compressed block is very hard to figure. + * The worst case can at least be boundined by having one bit that represents + * 32764 bytes and then all of the rest of the bytes representing the very + * very last byte. + * + * All of which is enough to compute an amount of extra data that is required + * to be safe. To avoid problems at the block level allocating 5 extra bytes + * per 32767 bytes of data is sufficient. To avoind problems internal to a block + * adding an extra 32767 bytes (the worst case uncompressed block size) is + * sufficient, to ensure that in the worst case the decompressed data for + * block will stop the byte before the compressed data for a block begins. + * To avoid problems with the compressed data's meta information an extra 18 + * bytes are needed. Leading to the formula: + * + * extra_bytes = (uncompressed_size >> 12) + 32768 + 18 + decompressor_size. + * + * Adding 8 bytes per 32K is a bit excessive but much easier to calculate. + * Adding 32768 instead of 32767 just makes for round numbers. + * Adding the decompressor_size is necessary as it musht live after all + * of the data as well. Last I measured the decompressor is about 14K. + * 10K of actuall data and 4K of bss. + * + */ + /* * gzip declarations */ @@ -28,15 +113,20 @@ typedef unsigned char uch; typedef unsigned short ush; typedef unsigned long ulg; -#define WSIZE 0x8000 /* Window size must be at least 32k, */ - /* and a power of two */ +#define WSIZE 0x80000000 /* Window size must be at least 32k, + * and a power of two + * We don't actually have a window just + * a huge output buffer so I report + * a 2G windows size, as that should + * always be larger than our output buffer. + */ -static uch *inbuf; /* input buffer */ -static uch window[WSIZE]; /* Sliding window buffer */ +static uch *inbuf; /* input buffer */ +static uch *window; /* Sliding window buffer, (and final output buffer) */ -static unsigned insize = 0; /* valid bytes in inbuf */ -static unsigned inptr = 0; /* index of next byte to be processed in inbuf */ -static unsigned outcnt = 0; /* bytes in output buffer */ +static unsigned insize; /* valid bytes in inbuf */ +static unsigned inptr; /* index of next byte to be processed in inbuf */ +static unsigned outcnt; /* bytes in output buffer */ /* gzip flag byte */ #define ASCII_FLAG 0x01 /* bit 0 set: file probably ASCII text */ @@ -87,8 +177,6 @@ extern unsigned char input_data[]; extern int input_len; static long bytes_out = 0; -static uch *output_data; -static unsigned long output_ptr = 0; static void *malloc(int size); static void free(void *where); @@ -98,17 +186,10 @@ static void *memcpy(void *dest, const void *src, unsigned n); static void putstr(const char *); -extern int end; -static long free_mem_ptr = (long)&end; +static long free_mem_ptr; static long free_mem_end_ptr; -#define INPLACE_MOVE_ROUTINE 0x1000 -#define LOW_BUFFER_START 0x2000 -#define LOW_BUFFER_MAX 0x90000 -#define HEAP_SIZE 0x3000 -static unsigned int low_buffer_end, low_buffer_size; -static int high_loaded =0; -static uch *high_buffer_start /* = (uch *)(((ulg)&end) + HEAP_SIZE)*/; +#define HEAP_SIZE 0x7000 static char *vidmem = (char *)0xb8000; static int vidport; @@ -218,58 +299,31 @@ static void* memcpy(void* dest, const void* src, unsigned n) */ static int fill_inbuf(void) { - if (insize != 0) { - error("ran out of input data"); - } - - inbuf = input_data; - insize = input_len; - inptr = 1; - return inbuf[0]; + error("ran out of input data"); + return 0; } /* =========================================================================== * Write the output window window[0..outcnt-1] and update crc and bytes_out. * (Used for the decompressed data only.) */ -static void flush_window_low(void) -{ - ulg c = crc; /* temporary variable */ - unsigned n; - uch *in, *out, ch; - - in = window; - out = &output_data[output_ptr]; - for (n = 0; n < outcnt; n++) { - ch = *out++ = *in++; - c = crc_32_tab[((int)c ^ ch) & 0xff] ^ (c >> 8); - } - crc = c; - bytes_out += (ulg)outcnt; - output_ptr += (ulg)outcnt; - outcnt = 0; -} - -static void flush_window_high(void) -{ - ulg c = crc; /* temporary variable */ - unsigned n; - uch *in, ch; - in = window; - for (n = 0; n < outcnt; n++) { - ch = *output_data++ = *in++; - if ((ulg)output_data == low_buffer_end) output_data=high_buffer_start; - c = crc_32_tab[((int)c ^ ch) & 0xff] ^ (c >> 8); - } - crc = c; - bytes_out += (ulg)outcnt; - outcnt = 0; -} - static void flush_window(void) { - if (high_loaded) flush_window_high(); - else flush_window_low(); + /* With my window equal to my output buffer + * I only need to compute the crc here. + */ + ulg c = crc; /* temporary variable */ + unsigned n; + uch *in, ch; + + in = window; + for (n = 0; n < outcnt; n++) { + ch = *in++; + c = crc_32_tab[((int)c ^ ch) & 0xff] ^ (c >> 8); + } + crc = c; + bytes_out += (ulg)outcnt; + outcnt = 0; } static void error(char *x) @@ -281,57 +335,8 @@ static void error(char *x) while(1); /* Halt */ } -static void setup_normal_output_buffer(void) -{ -#ifdef STANDARD_MEMORY_BIOS_CALL - if (RM_EXT_MEM_K < 1024) error("Less than 2MB of memory"); -#else - if ((RM_ALT_MEM_K > RM_EXT_MEM_K ? RM_ALT_MEM_K : RM_EXT_MEM_K) < 1024) error("Less than 2MB of memory"); -#endif - output_data = (unsigned char *)__PHYSICAL_START; /* Normally Points to 1M */ - free_mem_end_ptr = (long)real_mode; -} - -struct moveparams { - uch *low_buffer_start; int lcount; - uch *high_buffer_start; int hcount; -}; - -static void setup_output_buffer_if_we_run_high(struct moveparams *mv) -{ - high_buffer_start = (uch *)(((ulg)&end) + HEAP_SIZE); -#ifdef STANDARD_MEMORY_BIOS_CALL - if (RM_EXT_MEM_K < (3*1024)) error("Less than 4MB of memory"); -#else - if ((RM_ALT_MEM_K > RM_EXT_MEM_K ? RM_ALT_MEM_K : RM_EXT_MEM_K) < (3*1024)) error("Less than 4MB of memory"); -#endif - mv->low_buffer_start = output_data = (unsigned char *)LOW_BUFFER_START; - low_buffer_end = ((unsigned int)real_mode > LOW_BUFFER_MAX - ? LOW_BUFFER_MAX : (unsigned int)real_mode) & ~0xfff; - low_buffer_size = low_buffer_end - LOW_BUFFER_START; - high_loaded = 1; - free_mem_end_ptr = (long)high_buffer_start; - if ( (__PHYSICAL_START + low_buffer_size) > ((ulg)high_buffer_start)) { - high_buffer_start = (uch *)(__PHYSICAL_START + low_buffer_size); - mv->hcount = 0; /* say: we need not to move high_buffer */ - } - else mv->hcount = -1; - mv->high_buffer_start = high_buffer_start; -} - -static void close_output_buffer_if_we_run_high(struct moveparams *mv) -{ - if (bytes_out > low_buffer_size) { - mv->lcount = low_buffer_size; - if (mv->hcount) - mv->hcount = bytes_out - low_buffer_size; - } else { - mv->lcount = bytes_out; - mv->hcount = 0; - } -} - -int decompress_kernel(struct moveparams *mv, void *rmode) +asmlinkage void decompress_kernel(void *rmode, unsigned long heap, + uch *input_data, unsigned long input_len, uch *output) { real_mode = rmode; @@ -346,13 +351,21 @@ int decompress_kernel(struct moveparams *mv, void *rmode) lines = RM_SCREEN_INFO.orig_video_lines; cols = RM_SCREEN_INFO.orig_video_cols; - if (free_mem_ptr < 0x100000) setup_normal_output_buffer(); - else setup_output_buffer_if_we_run_high(mv); + window = output; /* Output buffer (Normally at 1M) */ + free_mem_ptr = heap; /* Heap */ + free_mem_end_ptr = heap + HEAP_SIZE; + inbuf = input_data; /* Input buffer */ + insize = input_len; + inptr = 0; + + if ((ulg)output & (__KERNEL_ALIGN - 1)) + error("Destination address not 2M aligned"); + if ((ulg)output >= 0xffffffffffUL) + error("Destination address too large"); makecrc(); putstr(".\nDecompressing Linux..."); gunzip(); putstr("done.\nBooting the kernel.\n"); - if (high_loaded) close_output_buffer_if_we_run_high(mv); - return high_loaded; + return; } diff --git a/arch/x86_64/boot/compressed/vmlinux.lds b/arch/x86_64/boot/compressed/vmlinux.lds new file mode 100644 index 0000000..94c13e5 --- /dev/null +++ b/arch/x86_64/boot/compressed/vmlinux.lds @@ -0,0 +1,44 @@ +OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64", "elf64-x86-64") +OUTPUT_ARCH(i386:x86-64) +ENTRY(startup_64) +SECTIONS +{ + /* Be careful parts of head.S assume startup_32 is at + * address 0. + */ + . = 0; + .text : { + _head = . ; + *(.text.head) + _ehead = . ; + *(.text.compressed) + _text = .; /* Text */ + *(.text) + *(.text.*) + _etext = . ; + } + .rodata : { + _rodata = . ; + *(.rodata) /* read-only data */ + *(.rodata.*) + _erodata = . ; + } + .data : { + _data = . ; + *(.data) + *(.data.*) + _edata = . ; + } + .bss : { + _bss = . ; + *(.bss) + *(.bss.*) + *(COMMON) + . = ALIGN(8); + _end = . ; + . = ALIGN(4096); + pgtable = . ; + . = . + 4096 * 6; + _heap = .; + } +} diff --git a/arch/x86_64/boot/compressed/vmlinux.scr b/arch/x86_64/boot/compressed/vmlinux.scr index 1ed9d79..bd1429c 100644 --- a/arch/x86_64/boot/compressed/vmlinux.scr +++ b/arch/x86_64/boot/compressed/vmlinux.scr @@ -1,9 +1,10 @@ SECTIONS { - .data : { + .text.compressed : { input_len = .; - LONG(input_data_end - input_data) input_data = .; - *(.data) - input_data_end = .; + LONG(input_data_end - input_data) input_data = .; + *(.data) + output_len = . - 4; + input_data_end = .; } } diff --git a/arch/x86_64/boot/setup.S b/arch/x86_64/boot/setup.S index 770940c..e9e33f9 100644 --- a/arch/x86_64/boot/setup.S +++ b/arch/x86_64/boot/setup.S @@ -51,6 +51,7 @@ #include <asm/boot.h> #include <asm/e820.h> #include <asm/page.h> +#include <asm/setup.h> /* Signature words to ensure LILO loaded us right */ #define SIG1 0xAA55 @@ -80,7 +81,7 @@ start: # This is the setup header, and it must start at %cs:2 (old 0x9020:2) .ascii "HdrS" # header signature - .word 0x0204 # header version number (>= 0x0105) + .word 0x0206 # header version number (>= 0x0105) # or else old loadlin-1.5 will fail) realmode_swtch: .word 0, 0 # default_switch, SETUPSEG start_sys_seg: .word SYSSEG @@ -155,7 +156,20 @@ cmd_line_ptr: .long 0 # (Header version 0x0202 or later) # low memory 0x10000 or higher. ramdisk_max: .long 0xffffffff - +kernel_alignment: .long 0x200000 # physical addr alignment required for + # protected mode relocatable kernel +#ifdef CONFIG_RELOCATABLE +relocatable_kernel: .byte 1 +#else +relocatable_kernel: .byte 0 +#endif +pad2: .byte 0 +pad3: .word 0 + +cmdline_size: .long COMMAND_LINE_SIZE-1 #length of the command line, + #added with boot protocol + #version 2.06 + trampoline: call start_of_setup .align 16 # The offset at this point is 0x240 @@ -290,64 +304,10 @@ loader_ok: movw %cs,%ax movw %ax,%ds - /* minimum CPUID flags for x86-64 */ - /* see http://www.x86-64.org/lists/discuss/msg02971.html */ -#define SSE_MASK ((1<<25)|(1<<26)) -#define REQUIRED_MASK1 ((1<<0)|(1<<3)|(1<<4)|(1<<5)|(1<<6)|(1<<8)|\ - (1<<13)|(1<<15)|(1<<24)) -#define REQUIRED_MASK2 (1<<29) - - pushfl /* standard way to check for cpuid */ - popl %eax - movl %eax,%ebx - xorl $0x200000,%eax - pushl %eax - popfl - pushfl - popl %eax - cmpl %eax,%ebx - jz no_longmode /* cpu has no cpuid */ - movl $0x0,%eax - cpuid - cmpl $0x1,%eax - jb no_longmode /* no cpuid 1 */ - xor %di,%di - cmpl $0x68747541,%ebx /* AuthenticAMD */ - jnz noamd - cmpl $0x69746e65,%edx - jnz noamd - cmpl $0x444d4163,%ecx - jnz noamd - mov $1,%di /* cpu is from AMD */ -noamd: - movl $0x1,%eax - cpuid - andl $REQUIRED_MASK1,%edx - xorl $REQUIRED_MASK1,%edx - jnz no_longmode - movl $0x80000000,%eax - cpuid - cmpl $0x80000001,%eax - jb no_longmode /* no extended cpuid */ - movl $0x80000001,%eax - cpuid - andl $REQUIRED_MASK2,%edx - xorl $REQUIRED_MASK2,%edx - jnz no_longmode -sse_test: - movl $1,%eax - cpuid - andl $SSE_MASK,%edx - cmpl $SSE_MASK,%edx - je sse_ok - test %di,%di - jz no_longmode /* only try to force SSE on AMD */ - movl $0xc0010015,%ecx /* HWCR */ - rdmsr - btr $15,%eax /* enable SSE */ - wrmsr - xor %di,%di /* don't loop */ - jmp sse_test /* try again */ + call verify_cpu + testl %eax,%eax + jz sse_ok + no_longmode: call beep lea long_mode_panic,%si @@ -357,7 +317,8 @@ no_longmode_loop: long_mode_panic: .string "Your CPU does not support long mode. Use a 32bit distribution." .byte 0 - + +#include "../kernel/verify_cpu.S" sse_ok: popw %ds @@ -846,7 +807,7 @@ gdt_48: # Include video setup & detection code -#include "video.S" +#include "../../i386/boot/video.S" # Setup signature -- must be last setup_sig1: .word SIG1 diff --git a/arch/x86_64/boot/video.S b/arch/x86_64/boot/video.S deleted file mode 100644 index 6090516..0000000 --- a/arch/x86_64/boot/video.S +++ /dev/null @@ -1,2043 +0,0 @@ -/* video.S - * - * Display adapter & video mode setup, version 2.13 (14-May-99) - * - * Copyright (C) 1995 -- 1998 Martin Mares <mj@ucw.cz> - * Based on the original setup.S code (C) Linus Torvalds and Mats Anderson - * - * Rewritten to use GNU 'as' by Chris Noe <stiker@northlink.com> May 1999 - * - * For further information, look at Documentation/svga.txt. - * - */ - -/* Enable autodetection of SVGA adapters and modes. */ -#undef CONFIG_VIDEO_SVGA - -/* Enable autodetection of VESA modes */ -#define CONFIG_VIDEO_VESA - -/* Enable compacting of mode table */ -#define CONFIG_VIDEO_COMPACT - -/* Retain screen contents when switching modes */ -#define CONFIG_VIDEO_RETAIN - -/* Enable local mode list */ -#undef CONFIG_VIDEO_LOCAL - -/* Force 400 scan lines for standard modes (hack to fix bad BIOS behaviour */ -#undef CONFIG_VIDEO_400_HACK - -/* Hack that lets you force specific BIOS mode ID and specific dimensions */ -#undef CONFIG_VIDEO_GFX_HACK -#define VIDEO_GFX_BIOS_AX 0x4f02 /* 800x600 on ThinkPad */ -#define VIDEO_GFX_BIOS_BX 0x0102 -#define VIDEO_GFX_DUMMY_RESOLUTION 0x6425 /* 100x37 */ - -/* This code uses an extended set of video mode numbers. These include: - * Aliases for standard modes - * NORMAL_VGA (-1) - * EXTENDED_VGA (-2) - * ASK_VGA (-3) - * Video modes numbered by menu position -- NOT RECOMMENDED because of lack - * of compatibility when extending the table. These are between 0x00 and 0xff. - */ -#define VIDEO_FIRST_MENU 0x0000 - -/* Standard BIOS video modes (BIOS number + 0x0100) */ -#define VIDEO_FIRST_BIOS 0x0100 - -/* VESA BIOS video modes (VESA number + 0x0200) */ -#define VIDEO_FIRST_VESA 0x0200 - -/* Video7 special modes (BIOS number + 0x0900) */ -#define VIDEO_FIRST_V7 0x0900 - -/* Special video modes */ -#define VIDEO_FIRST_SPECIAL 0x0f00 -#define VIDEO_80x25 0x0f00 -#define VIDEO_8POINT 0x0f01 -#define VIDEO_80x43 0x0f02 -#define VIDEO_80x28 0x0f03 -#define VIDEO_CURRENT_MODE 0x0f04 -#define VIDEO_80x30 0x0f05 -#define VIDEO_80x34 0x0f06 -#define VIDEO_80x60 0x0f07 -#define VIDEO_GFX_HACK 0x0f08 -#define VIDEO_LAST_SPECIAL 0x0f09 - -/* Video modes given by resolution */ -#define VIDEO_FIRST_RESOLUTION 0x1000 - -/* The "recalculate timings" flag */ -#define VIDEO_RECALC 0x8000 - -/* Positions of various video parameters passed to the kernel */ -/* (see also include/linux/tty.h) */ -#define PARAM_CURSOR_POS 0x00 -#define PARAM_VIDEO_PAGE 0x04 -#define PARAM_VIDEO_MODE 0x06 -#define PARAM_VIDEO_COLS 0x07 -#define PARAM_VIDEO_EGA_BX 0x0a -#define PARAM_VIDEO_LINES 0x0e -#define PARAM_HAVE_VGA 0x0f -#define PARAM_FONT_POINTS 0x10 - -#define PARAM_LFB_WIDTH 0x12 -#define PARAM_LFB_HEIGHT 0x14 -#define PARAM_LFB_DEPTH 0x16 -#define PARAM_LFB_BASE 0x18 -#define PARAM_LFB_SIZE 0x1c -#define PARAM_LFB_LINELENGTH 0x24 -#define PARAM_LFB_COLORS 0x26 -#define PARAM_VESAPM_SEG 0x2e -#define PARAM_VESAPM_OFF 0x30 -#define PARAM_LFB_PAGES 0x32 -#define PARAM_VESA_ATTRIB 0x34 -#define PARAM_CAPABILITIES 0x36 - -/* Define DO_STORE according to CONFIG_VIDEO_RETAIN */ -#ifdef CONFIG_VIDEO_RETAIN -#define DO_STORE call store_screen -#else -#define DO_STORE -#endif /* CONFIG_VIDEO_RETAIN */ - -# This is the main entry point called by setup.S -# %ds *must* be pointing to the bootsector -video: pushw %ds # We use different segments - pushw %ds # FS contains original DS - popw %fs - pushw %cs # DS is equal to CS - popw %ds - pushw %cs # ES is equal to CS - popw %es - xorw %ax, %ax - movw %ax, %gs # GS is zero - cld - call basic_detect # Basic adapter type testing (EGA/VGA/MDA/CGA) -#ifdef CONFIG_VIDEO_SELECT - movw %fs:(0x01fa), %ax # User selected video mode - cmpw $ASK_VGA, %ax # Bring up the menu - jz vid2 - - call mode_set # Set the mode - jc vid1 - - leaw badmdt, %si # Invalid mode ID - call prtstr -vid2: call mode_menu -vid1: -#ifdef CONFIG_VIDEO_RETAIN - call restore_screen # Restore screen contents -#endif /* CONFIG_VIDEO_RETAIN */ - call store_edid -#endif /* CONFIG_VIDEO_SELECT */ - call mode_params # Store mode parameters - popw %ds # Restore original DS - ret - -# Detect if we have CGA, MDA, EGA or VGA and pass it to the kernel. -basic_detect: - movb $0, %fs:(PARAM_HAVE_VGA) - movb $0x12, %ah # Check EGA/VGA - movb $0x10, %bl - int $0x10 - movw %bx, %fs:(PARAM_VIDEO_EGA_BX) # Identifies EGA to the kernel - cmpb $0x10, %bl # No, it's a CGA/MDA/HGA card. - je basret - - incb adapter - movw $0x1a00, %ax # Check EGA or VGA? - int $0x10 - cmpb $0x1a, %al # 1a means VGA... - jne basret # anything else is EGA. - - incb %fs:(PARAM_HAVE_VGA) # We've detected a VGA - incb adapter -basret: ret - -# Store the video mode parameters for later usage by the kernel. -# This is done by asking the BIOS except for the rows/columns -# parameters in the default 80x25 mode -- these are set directly, -# because some very obscure BIOSes supply insane values. -mode_params: -#ifdef CONFIG_VIDEO_SELECT - cmpb $0, graphic_mode - jnz mopar_gr -#endif - movb $0x03, %ah # Read cursor position - xorb %bh, %bh - int $0x10 - movw %dx, %fs:(PARAM_CURSOR_POS) - movb $0x0f, %ah # Read page/mode/width - int $0x10 - movw %bx, %fs:(PARAM_VIDEO_PAGE) - movw %ax, %fs:(PARAM_VIDEO_MODE) # Video mode and screen width - cmpb $0x7, %al # MDA/HGA => segment differs - jnz mopar0 - - movw $0xb000, video_segment -mopar0: movw %gs:(0x485), %ax # Font size - movw %ax, %fs:(PARAM_FONT_POINTS) # (valid only on EGA/VGA) - movw force_size, %ax # Forced size? - orw %ax, %ax - jz mopar1 - - movb %ah, %fs:(PARAM_VIDEO_COLS) - movb %al, %fs:(PARAM_VIDEO_LINES) - ret - -mopar1: movb $25, %al - cmpb $0, adapter # If we are on CGA/MDA/HGA, the - jz mopar2 # screen must have 25 lines. - - movb %gs:(0x484), %al # On EGA/VGA, use the EGA+ BIOS - incb %al # location of max lines. -mopar2: movb %al, %fs:(PARAM_VIDEO_LINES) - ret - -#ifdef CONFIG_VIDEO_SELECT -# Fetching of VESA frame buffer parameters -mopar_gr: - leaw modelist+1024, %di - movb $0x23, %fs:(PARAM_HAVE_VGA) - movw 16(%di), %ax - movw %ax, %fs:(PARAM_LFB_LINELENGTH) - movw 18(%di), %ax - movw %ax, %fs:(PARAM_LFB_WIDTH) - movw 20(%di), %ax - movw %ax, %fs:(PARAM_LFB_HEIGHT) - movb 25(%di), %al - movb $0, %ah - movw %ax, %fs:(PARAM_LFB_DEPTH) - movb 29(%di), %al - movb $0, %ah - movw %ax, %fs:(PARAM_LFB_PAGES) - movl 40(%di), %eax - movl %eax, %fs:(PARAM_LFB_BASE) - movl 31(%di), %eax - movl %eax, %fs:(PARAM_LFB_COLORS) - movl 35(%di), %eax - movl %eax, %fs:(PARAM_LFB_COLORS+4) - movw 0(%di), %ax - movw %ax, %fs:(PARAM_VESA_ATTRIB) - -# get video mem size - leaw modelist+1024, %di - movw $0x4f00, %ax - int $0x10 - xorl %eax, %eax - movw 18(%di), %ax - movl %eax, %fs:(PARAM_LFB_SIZE) - -# store mode capabilities - movl 10(%di), %eax - movl %eax, %fs:(PARAM_CAPABILITIES) - -# switching the DAC to 8-bit is for <= 8 bpp only - movw %fs:(PARAM_LFB_DEPTH), %ax - cmpw $8, %ax - jg dac_done - -# get DAC switching capability - xorl %eax, %eax - movb 10(%di), %al - testb $1, %al - jz dac_set - -# attempt to switch DAC to 8-bit - movw $0x4f08, %ax - movw $0x0800, %bx - int $0x10 - cmpw $0x004f, %ax - jne dac_set - movb %bh, dac_size # store actual DAC size - -dac_set: -# set color size to DAC size - movb dac_size, %al - movb %al, %fs:(PARAM_LFB_COLORS+0) - movb %al, %fs:(PARAM_LFB_COLORS+2) - movb %al, %fs:(PARAM_LFB_COLORS+4) - movb %al, %fs:(PARAM_LFB_COLORS+6) - -# set color offsets to 0 - movb $0, %fs:(PARAM_LFB_COLORS+1) - movb $0, %fs:(PARAM_LFB_COLORS+3) - movb $0, %fs:(PARAM_LFB_COLORS+5) - movb $0, %fs:(PARAM_LFB_COLORS+7) - -dac_done: -# get protected mode interface informations - movw $0x4f0a, %ax - xorw %bx, %bx - xorw %di, %di - int $0x10 - cmp $0x004f, %ax - jnz no_pm - - movw %es, %fs:(PARAM_VESAPM_SEG) - movw %di, %fs:(PARAM_VESAPM_OFF) -no_pm: ret - -# The video mode menu -mode_menu: - leaw keymsg, %si # "Return/Space/Timeout" message - call prtstr - call flush -nokey: call getkt - - cmpb $0x0d, %al # ENTER ? - je listm # yes - manual mode selection - - cmpb $0x20, %al # SPACE ? - je defmd1 # no - repeat - - call beep - jmp nokey - -defmd1: ret # No mode chosen? Default 80x25 - -listm: call mode_table # List mode table -listm0: leaw name_bann, %si # Print adapter name - call prtstr - movw card_name, %si - orw %si, %si - jnz an2 - - movb adapter, %al - leaw old_name, %si - orb %al, %al - jz an1 - - leaw ega_name, %si - decb %al - jz an1 - - leaw vga_name, %si - jmp an1 - -an2: call prtstr - leaw svga_name, %si -an1: call prtstr - leaw listhdr, %si # Table header - call prtstr - movb $0x30, %dl # DL holds mode number - leaw modelist, %si -lm1: cmpw $ASK_VGA, (%si) # End? - jz lm2 - - movb %dl, %al # Menu selection number - call prtchr - call prtsp2 - lodsw - call prthw # Mode ID - call prtsp2 - movb 0x1(%si), %al - call prtdec # Rows - movb $0x78, %al # the letter 'x' - call prtchr - lodsw - call prtdec # Columns - movb $0x0d, %al # New line - call prtchr - movb $0x0a, %al - call prtchr - incb %dl # Next character - cmpb $0x3a, %dl - jnz lm1 - - movb $0x61, %dl - jmp lm1 - -lm2: leaw prompt, %si # Mode prompt - call prtstr - leaw edit_buf, %di # Editor buffer -lm3: call getkey - cmpb $0x0d, %al # Enter? - jz lment - - cmpb $0x08, %al # Backspace? - jz lmbs - - cmpb $0x20, %al # Printable? - jc lm3 - - cmpw $edit_buf+4, %di # Enough space? - jz lm3 - - stosb - call prtchr - jmp lm3 - -lmbs: cmpw $edit_buf, %di # Backspace - jz lm3 - - decw %di - movb $0x08, %al - call prtchr - call prtspc - movb $0x08, %al - call prtchr - jmp lm3 - -lment: movb $0, (%di) - leaw crlft, %si - call prtstr - leaw edit_buf, %si - cmpb $0, (%si) # Empty string = default mode - jz lmdef - - cmpb $0, 1(%si) # One character = menu selection - jz mnusel - - cmpw $0x6373, (%si) # "scan" => mode scanning - jnz lmhx - - cmpw $0x6e61, 2(%si) - jz lmscan - -lmhx: xorw %bx, %bx # Else => mode ID in hex -lmhex: lodsb - orb %al, %al - jz lmuse1 - - subb $0x30, %al - jc lmbad - - cmpb $10, %al - jc lmhx1 - - subb $7, %al - andb $0xdf, %al - cmpb $10, %al - jc lmbad - - cmpb $16, %al - jnc lmbad - -lmhx1: shlw $4, %bx - orb %al, %bl - jmp lmhex - -lmuse1: movw %bx, %ax - jmp lmuse - -mnusel: lodsb # Menu selection - xorb %ah, %ah - subb $0x30, %al - jc lmbad - - cmpb $10, %al - jc lmuse - - cmpb $0x61-0x30, %al - jc lmbad - - subb $0x61-0x30-10, %al - cmpb $36, %al - jnc lmbad - -lmuse: call mode_set - jc lmdef - -lmbad: leaw unknt, %si - call prtstr - jmp lm2 -lmscan: cmpb $0, adapter # Scanning only on EGA/VGA - jz lmbad - - movw $0, mt_end # Scanning of modes is - movb $1, scanning # done as new autodetection. - call mode_table - jmp listm0 -lmdef: ret - -# Additional parts of mode_set... (relative jumps, you know) -setv7: # Video7 extended modes - DO_STORE - subb $VIDEO_FIRST_V7>>8, %bh - movw $0x6f05, %ax - int $0x10 - stc - ret - -_setrec: jmp setrec # Ugly... -_set_80x25: jmp set_80x25 - -# Aliases for backward compatibility. -setalias: - movw $VIDEO_80x25, %ax - incw %bx - jz mode_set - - movb $VIDEO_8POINT-VIDEO_FIRST_SPECIAL, %al - incw %bx - jnz setbad # Fall-through! - -# Setting of user mode (AX=mode ID) => CF=success -mode_set: - movw %ax, %fs:(0x01fa) # Store mode for use in acpi_wakeup.S - movw %ax, %bx - cmpb $0xff, %ah - jz setalias - - testb $VIDEO_RECALC>>8, %ah - jnz _setrec - - cmpb $VIDEO_FIRST_RESOLUTION>>8, %ah - jnc setres - - cmpb $VIDEO_FIRST_SPECIAL>>8, %ah - jz setspc - - cmpb $VIDEO_FIRST_V7>>8, %ah - jz setv7 - - cmpb $VIDEO_FIRST_VESA>>8, %ah - jnc check_vesa - - orb %ah, %ah - jz setmenu - - decb %ah - jz setbios - -setbad: clc - movb $0, do_restore # The screen needn't be restored - ret - -setvesa: - DO_STORE - subb $VIDEO_FIRST_VESA>>8, %bh - movw $0x4f02, %ax # VESA BIOS mode set call - int $0x10 - cmpw $0x004f, %ax # AL=4f if implemented - jnz setbad # AH=0 if OK - - stc - ret - -setbios: - DO_STORE - int $0x10 # Standard BIOS mode set call - pushw %bx - movb $0x0f, %ah # Check if really set - int $0x10 - popw %bx - cmpb %bl, %al - jnz setbad - - stc - ret - -setspc: xorb %bh, %bh # Set special mode - cmpb $VIDEO_LAST_SPECIAL-VIDEO_FIRST_SPECIAL, %bl - jnc setbad - - addw %bx, %bx - jmp *spec_inits(%bx) - -setmenu: - orb %al, %al # 80x25 is an exception - jz _set_80x25 - - pushw %bx # Set mode chosen from menu - call mode_table # Build the mode table - popw %ax - shlw $2, %ax - addw %ax, %si - cmpw %di, %si - jnc setbad - - movw (%si), %ax # Fetch mode ID -_m_s: jmp mode_set - -setres: pushw %bx # Set mode chosen by resolution - call mode_table - popw %bx - xchgb %bl, %bh -setr1: lodsw - cmpw $ASK_VGA, %ax # End of the list? - jz setbad - - lodsw - cmpw %bx, %ax - jnz setr1 - - movw -4(%si), %ax # Fetch mode ID - jmp _m_s - -check_vesa: -#ifdef CONFIG_FIRMWARE_EDID - leaw modelist+1024, %di - movw $0x4f00, %ax - int $0x10 - cmpw $0x004f, %ax - jnz setbad - - movw 4(%di), %ax - movw %ax, vbe_version -#endif - leaw modelist+1024, %di - subb $VIDEO_FIRST_VESA>>8, %bh - movw %bx, %cx # Get mode information structure - movw $0x4f01, %ax - int $0x10 - addb $VIDEO_FIRST_VESA>>8, %bh - cmpw $0x004f, %ax - jnz setbad - - movb (%di), %al # Check capabilities. - andb $0x19, %al - cmpb $0x09, %al - jz setvesa # This is a text mode - - movb (%di), %al # Check capabilities. - andb $0x99, %al - cmpb $0x99, %al - jnz _setbad # Doh! No linear frame buffer. - - subb $VIDEO_FIRST_VESA>>8, %bh - orw $0x4000, %bx # Use linear frame buffer - movw $0x4f02, %ax # VESA BIOS mode set call - int $0x10 - cmpw $0x004f, %ax # AL=4f if implemented - jnz _setbad # AH=0 if OK - - movb $1, graphic_mode # flag graphic mode - movb $0, do_restore # no screen restore - stc - ret - -_setbad: jmp setbad # Ugly... - -# Recalculate vertical display end registers -- this fixes various -# inconsistencies of extended modes on many adapters. Called when -# the VIDEO_RECALC flag is set in the mode ID. - -setrec: subb $VIDEO_RECALC>>8, %ah # Set the base mode - call mode_set - jnc rct3 - - movw %gs:(0x485), %ax # Font size in pixels - movb %gs:(0x484), %bl # Number of rows - incb %bl - mulb %bl # Number of visible - decw %ax # scan lines - 1 - movw $0x3d4, %dx - movw %ax, %bx - movb $0x12, %al # Lower 8 bits - movb %bl, %ah - outw %ax, %dx - movb $0x07, %al # Bits 8 and 9 in the overflow register - call inidx - xchgb %al, %ah - andb $0xbd, %ah - shrb %bh - jnc rct1 - orb $0x02, %ah -rct1: shrb %bh - jnc rct2 - orb $0x40, %ah -rct2: movb $0x07, %al - outw %ax, %dx - stc -rct3: ret - -# Table of routines for setting of the special modes. -spec_inits: - .word set_80x25 - .word set_8pixel - .word set_80x43 - .word set_80x28 - .word set_current - .word set_80x30 - .word set_80x34 - .word set_80x60 - .word set_gfx - -# Set the 80x25 mode. If already set, do nothing. -set_80x25: - movw $0x5019, force_size # Override possibly broken BIOS -use_80x25: -#ifdef CONFIG_VIDEO_400_HACK - movw $0x1202, %ax # Force 400 scan lines - movb $0x30, %bl - int $0x10 -#else - movb $0x0f, %ah # Get current mode ID - int $0x10 - cmpw $0x5007, %ax # Mode 7 (80x25 mono) is the only one available - jz st80 # on CGA/MDA/HGA and is also available on EGAM - - cmpw $0x5003, %ax # Unknown mode, force 80x25 color - jnz force3 - -st80: cmpb $0, adapter # CGA/MDA/HGA => mode 3/7 is always 80x25 - jz set80 - - movb %gs:(0x0484), %al # This is EGA+ -- beware of 80x50 etc. - orb %al, %al # Some buggy BIOS'es set 0 rows - jz set80 - - cmpb $24, %al # It's hopefully correct - jz set80 -#endif /* CONFIG_VIDEO_400_HACK */ -force3: DO_STORE - movw $0x0003, %ax # Forced set - int $0x10 -set80: stc - ret - -# Set the 80x50/80x43 8-pixel mode. Simple BIOS calls. -set_8pixel: - DO_STORE - call use_80x25 # The base is 80x25 -set_8pt: - movw $0x1112, %ax # Use 8x8 font - xorb %bl, %bl - int $0x10 - movw $0x1200, %ax # Use alternate print screen - movb $0x20, %bl - int $0x10 - movw $0x1201, %ax # Turn off cursor emulation - movb $0x34, %bl - int $0x10 - movb $0x01, %ah # Define cursor scan lines 6-7 - movw $0x0607, %cx - int $0x10 -set_current: - stc - ret - -# Set the 80x28 mode. This mode works on all VGA's, because it's a standard -# 80x25 mode with 14-point fonts instead of 16-point. -set_80x28: - DO_STORE - call use_80x25 # The base is 80x25 -set14: movw $0x1111, %ax # Use 9x14 font - xorb %bl, %bl - int $0x10 - movb $0x01, %ah # Define cursor scan lines 11-12 - movw $0x0b0c, %cx - int $0x10 - stc - ret - -# Set the 80x43 mode. This mode is works on all VGA's. -# It's a 350-scanline mode with 8-pixel font. -set_80x43: - DO_STORE - movw $0x1201, %ax # Set 350 scans - movb $0x30, %bl - int $0x10 - movw $0x0003, %ax # Reset video mode - int $0x10 - jmp set_8pt # Use 8-pixel font - -# Set the 80x30 mode (all VGA's). 480 scanlines, 16-pixel font. -set_80x30: - call use_80x25 # Start with real 80x25 - DO_STORE - movw $0x3cc, %dx # Get CRTC port - inb %dx, %al - movb $0xd4, %dl - rorb %al # Mono or color? - jc set48a - - movb $0xb4, %dl -set48a: movw $0x0c11, %ax # Vertical sync end (also unlocks CR0-7) - call outidx - movw $0x0b06, %ax # Vertical total - call outidx - movw $0x3e07, %ax # (Vertical) overflow - call outidx - movw $0xea10, %ax # Vertical sync start - call outidx - movw $0xdf12, %ax # Vertical display end - call outidx - movw $0xe715, %ax # Vertical blank start - call outidx - movw $0x0416, %ax # Vertical blank end - call outidx - pushw %dx - movb $0xcc, %dl # Misc output register (read) - inb %dx, %al - movb $0xc2, %dl # (write) - andb $0x0d, %al # Preserve clock select bits and color bit - orb $0xe2, %al # Set correct sync polarity - outb %al, %dx - popw %dx - movw $0x501e, force_size - stc # That's all. - ret - -# Set the 80x34 mode (all VGA's). 480 scans, 14-pixel font. -set_80x34: - call set_80x30 # Set 480 scans - call set14 # And 14-pt font - movw $0xdb12, %ax # VGA vertical display end - movw $0x5022, force_size -setvde: call outidx - stc - ret - -# Set the 80x60 mode (all VGA's). 480 scans, 8-pixel font. -set_80x60: - call set_80x30 # Set 480 scans - call set_8pt # And 8-pt font - movw $0xdf12, %ax # VGA vertical display end - movw $0x503c, force_size - jmp setvde - -# Special hack for ThinkPad graphics -set_gfx: -#ifdef CONFIG_VIDEO_GFX_HACK - movw $VIDEO_GFX_BIOS_AX, %ax - movw $VIDEO_GFX_BIOS_BX, %bx - int $0x10 - movw $VIDEO_GFX_DUMMY_RESOLUTION, force_size - stc -#endif - ret - -#ifdef CONFIG_VIDEO_RETAIN - -# Store screen contents to temporary buffer. -store_screen: - cmpb $0, do_restore # Already stored? - jnz stsr - - testb $CAN_USE_HEAP, loadflags # Have we space for storing? - jz stsr - - pushw %ax - pushw %bx - pushw force_size # Don't force specific size - movw $0, force_size - call mode_params # Obtain params of current mode - popw force_size - movb %fs:(PARAM_VIDEO_LINES), %ah - movb %fs:(PARAM_VIDEO_COLS), %al - movw %ax, %bx # BX=dimensions - mulb %ah - movw %ax, %cx # CX=number of characters - addw %ax, %ax # Calculate image size - addw $modelist+1024+4, %ax - cmpw heap_end_ptr, %ax - jnc sts1 # Unfortunately, out of memory - - movw %fs:(PARAM_CURSOR_POS), %ax # Store mode params - leaw modelist+1024, %di - stosw - movw %bx, %ax - stosw - pushw %ds # Store the screen - movw video_segment, %ds - xorw %si, %si - rep - movsw - popw %ds - incb do_restore # Screen will be restored later -sts1: popw %bx - popw %ax -stsr: ret - -# Restore screen contents from temporary buffer. -restore_screen: - cmpb $0, do_restore # Has the screen been stored? - jz res1 - - call mode_params # Get parameters of current mode - movb %fs:(PARAM_VIDEO_LINES), %cl - movb %fs:(PARAM_VIDEO_COLS), %ch - leaw modelist+1024, %si # Screen buffer - lodsw # Set cursor position - movw %ax, %dx - cmpb %cl, %dh - jc res2 - - movb %cl, %dh - decb %dh -res2: cmpb %ch, %dl - jc res3 - - movb %ch, %dl - decb %dl -res3: movb $0x02, %ah - movb $0x00, %bh - int $0x10 - lodsw # Display size - movb %ah, %dl # DL=number of lines - movb $0, %ah # BX=phys. length of orig. line - movw %ax, %bx - cmpb %cl, %dl # Too many? - jc res4 - - pushw %ax - movb %dl, %al - subb %cl, %al - mulb %bl - addw %ax, %si - addw %ax, %si - popw %ax - movb %cl, %dl -res4: cmpb %ch, %al # Too wide? - jc res5 - - movb %ch, %al # AX=width of src. line -res5: movb $0, %cl - xchgb %ch, %cl - movw %cx, %bp # BP=width of dest. line - pushw %es - movw video_segment, %es - xorw %di, %di # Move the data - addw %bx, %bx # Convert BX and BP to _bytes_ - addw %bp, %bp -res6: pushw %si - pushw %di - movw %ax, %cx - rep - movsw - popw %di - popw %si - addw %bp, %di - addw %bx, %si - decb %dl - jnz res6 - - popw %es # Done -res1: ret -#endif /* CONFIG_VIDEO_RETAIN */ - -# Write to indexed VGA register (AL=index, AH=data, DX=index reg. port) -outidx: outb %al, %dx - pushw %ax - movb %ah, %al - incw %dx - outb %al, %dx - decw %dx - popw %ax - ret - -# Build the table of video modes (stored after the setup.S code at the -# `modelist' label. Each video mode record looks like: -# .word MODE-ID (our special mode ID (see above)) -# .byte rows (number of rows) -# .byte columns (number of columns) -# Returns address of the end of the table in DI, the end is marked -# with a ASK_VGA ID. -mode_table: - movw mt_end, %di # Already filled? - orw %di, %di - jnz mtab1x - - leaw modelist, %di # Store standard modes: - movl $VIDEO_80x25 + 0x50190000, %eax # The 80x25 mode (ALL) - stosl - movb adapter, %al # CGA/MDA/HGA -- no more modes - orb %al, %al - jz mtabe - - decb %al - jnz mtabv - - movl $VIDEO_8POINT + 0x502b0000, %eax # The 80x43 EGA mode - stosl - jmp mtabe - -mtab1x: jmp mtab1 - -mtabv: leaw vga_modes, %si # All modes for std VGA - movw $vga_modes_end-vga_modes, %cx - rep # I'm unable to use movsw as I don't know how to store a half - movsb # of the expression above to cx without using explicit shr. - - cmpb $0, scanning # Mode scan requested? - jz mscan1 - - call mode_scan -mscan1: - -#ifdef CONFIG_VIDEO_LOCAL - call local_modes -#endif /* CONFIG_VIDEO_LOCAL */ - -#ifdef CONFIG_VIDEO_VESA - call vesa_modes # Detect VESA VGA modes -#endif /* CONFIG_VIDEO_VESA */ - -#ifdef CONFIG_VIDEO_SVGA - cmpb $0, scanning # Bypass when scanning - jnz mscan2 - - call svga_modes # Detect SVGA cards & modes -mscan2: -#endif /* CONFIG_VIDEO_SVGA */ - -mtabe: - -#ifdef CONFIG_VIDEO_COMPACT - leaw modelist, %si - movw %di, %dx - movw %si, %di -cmt1: cmpw %dx, %si # Scan all modes - jz cmt2 - - leaw modelist, %bx # Find in previous entries - movw 2(%si), %cx -cmt3: cmpw %bx, %si - jz cmt4 - - cmpw 2(%bx), %cx # Found => don't copy this entry - jz cmt5 - - addw $4, %bx - jmp cmt3 - -cmt4: movsl # Copy entry - jmp cmt1 - -cmt5: addw $4, %si # Skip entry - jmp cmt1 - -cmt2: -#endif /* CONFIG_VIDEO_COMPACT */ - - movw $ASK_VGA, (%di) # End marker - movw %di, mt_end -mtab1: leaw modelist, %si # SI=mode list, DI=list end -ret0: ret - -# Modes usable on all standard VGAs -vga_modes: - .word VIDEO_8POINT - .word 0x5032 # 80x50 - .word VIDEO_80x43 - .word 0x502b # 80x43 - .word VIDEO_80x28 - .word 0x501c # 80x28 - .word VIDEO_80x30 - .word 0x501e # 80x30 - .word VIDEO_80x34 - .word 0x5022 # 80x34 - .word VIDEO_80x60 - .word 0x503c # 80x60 -#ifdef CONFIG_VIDEO_GFX_HACK - .word VIDEO_GFX_HACK - .word VIDEO_GFX_DUMMY_RESOLUTION -#endif - -vga_modes_end: -# Detect VESA modes. - -#ifdef CONFIG_VIDEO_VESA -vesa_modes: - cmpb $2, adapter # VGA only - jnz ret0 - - movw %di, %bp # BP=original mode table end - addw $0x200, %di # Buffer space - movw $0x4f00, %ax # VESA Get card info call - int $0x10 - movw %bp, %di - cmpw $0x004f, %ax # Successful? - jnz ret0 - - cmpw $0x4556, 0x200(%di) - jnz ret0 - - cmpw $0x4153, 0x202(%di) - jnz ret0 - - movw $vesa_name, card_name # Set name to "VESA VGA" - pushw %gs - lgsw 0x20e(%di), %si # GS:SI=mode list - movw $128, %cx # Iteration limit -vesa1: -# gas version 2.9.1, using BFD version 2.9.1.0.23 buggers the next inst. -# XXX: lodsw %gs:(%si), %ax # Get next mode in the list - gs; lodsw - cmpw $0xffff, %ax # End of the table? - jz vesar - - cmpw $0x0080, %ax # Check validity of mode ID - jc vesa2 - - orb %ah, %ah # Valid IDs: 0x0000-0x007f/0x0100-0x07ff - jz vesan # Certain BIOSes report 0x80-0xff! - - cmpw $0x0800, %ax - jnc vesae - -vesa2: pushw %cx - movw %ax, %cx # Get mode information structure - movw $0x4f01, %ax - int $0x10 - movw %cx, %bx # BX=mode number - addb $VIDEO_FIRST_VESA>>8, %bh - popw %cx - cmpw $0x004f, %ax - jnz vesan # Don't report errors (buggy BIOSES) - - movb (%di), %al # Check capabilities. We require - andb $0x19, %al # a color text mode. - cmpb $0x09, %al - jnz vesan - - cmpw $0xb800, 8(%di) # Standard video memory address required - jnz vesan - - testb $2, (%di) # Mode characteristics supplied? - movw %bx, (%di) # Store mode number - jz vesa3 - - xorw %dx, %dx - movw 0x12(%di), %bx # Width - orb %bh, %bh - jnz vesan - - movb %bl, 0x3(%di) - movw 0x14(%di), %ax # Height - orb %ah, %ah - jnz vesan - - movb %al, 2(%di) - mulb %bl - cmpw $8193, %ax # Small enough for Linux console driver? - jnc vesan - - jmp vesaok - -vesa3: subw $0x8108, %bx # This mode has no detailed info specified, - jc vesan # so it must be a standard VESA mode. - - cmpw $5, %bx - jnc vesan - - movw vesa_text_mode_table(%bx), %ax - movw %ax, 2(%di) -vesaok: addw $4, %di # The mode is valid. Store it. -vesan: loop vesa1 # Next mode. Limit exceeded => error -vesae: leaw vesaer, %si - call prtstr - movw %bp, %di # Discard already found modes. -vesar: popw %gs - ret - -# Dimensions of standard VESA text modes -vesa_text_mode_table: - .byte 60, 80 # 0108 - .byte 25, 132 # 0109 - .byte 43, 132 # 010A - .byte 50, 132 # 010B - .byte 60, 132 # 010C -#endif /* CONFIG_VIDEO_VESA */ - -# Scan for video modes. A bit dirty, but should work. -mode_scan: - movw $0x0100, %cx # Start with mode 0 -scm1: movb $0, %ah # Test the mode - movb %cl, %al - int $0x10 - movb $0x0f, %ah - int $0x10 - cmpb %cl, %al - jnz scm2 # Mode not set - - movw $0x3c0, %dx # Test if it's a text mode - movb $0x10, %al # Mode bits - call inidx - andb $0x03, %al - jnz scm2 - - movb $0xce, %dl # Another set of mode bits - movb $0x06, %al - call inidx - shrb %al - jc scm2 - - movb $0xd4, %dl # Cursor location - movb $0x0f, %al - call inidx - orb %al, %al - jnz scm2 - - movw %cx, %ax # Ok, store the mode - stosw - movb %gs:(0x484), %al # Number of rows - incb %al - stosb - movw %gs:(0x44a), %ax # Number of columns - stosb -scm2: incb %cl - jns scm1 - - movw $0x0003, %ax # Return back to mode 3 - int $0x10 - ret - -tstidx: outw %ax, %dx # OUT DX,AX and inidx -inidx: outb %al, %dx # Read from indexed VGA register - incw %dx # AL=index, DX=index reg port -> AL=data - inb %dx, %al - decw %dx - ret - -# Try to detect type of SVGA card and supply (usually approximate) video -# mode table for it. - -#ifdef CONFIG_VIDEO_SVGA -svga_modes: - leaw svga_table, %si # Test all known SVGA adapters -dosvga: lodsw - movw %ax, %bp # Default mode table - orw %ax, %ax - jz didsv1 - - lodsw # Pointer to test routine - pushw %si - pushw %di - pushw %es - movw $0xc000, %bx - movw %bx, %es - call *%ax # Call test routine - popw %es - popw %di - popw %si - orw %bp, %bp - jz dosvga - - movw %bp, %si # Found, copy the modes - movb svga_prefix, %ah -cpsvga: lodsb - orb %al, %al - jz didsv - - stosw - movsw - jmp cpsvga - -didsv: movw %si, card_name # Store pointer to card name -didsv1: ret - -# Table of all known SVGA cards. For each card, we store a pointer to -# a table of video modes supported by the card and a pointer to a routine -# used for testing of presence of the card. The video mode table is always -# followed by the name of the card or the chipset. -svga_table: - .word ati_md, ati_test - .word oak_md, oak_test - .word paradise_md, paradise_test - .word realtek_md, realtek_test - .word s3_md, s3_test - .word chips_md, chips_test - .word video7_md, video7_test - .word cirrus5_md, cirrus5_test - .word cirrus6_md, cirrus6_test - .word cirrus1_md, cirrus1_test - .word ahead_md, ahead_test - .word everex_md, everex_test - .word genoa_md, genoa_test - .word trident_md, trident_test - .word tseng_md, tseng_test - .word 0 - -# Test routines and mode tables: - -# S3 - The test algorithm was taken from the SuperProbe package -# for XFree86 1.2.1. Report bugs to Christoph.Niemann@linux.org -s3_test: - movw $0x0f35, %cx # we store some constants in cl/ch - movw $0x03d4, %dx - movb $0x38, %al - call inidx - movb %al, %bh # store current CRT-register 0x38 - movw $0x0038, %ax - call outidx # disable writing to special regs - movb %cl, %al # check whether we can write special reg 0x35 - call inidx - movb %al, %bl # save the current value of CRT reg 0x35 - andb $0xf0, %al # clear bits 0-3 - movb %al, %ah - movb %cl, %al # and write it to CRT reg 0x35 - call outidx - call inidx # now read it back - andb %ch, %al # clear the upper 4 bits - jz s3_2 # the first test failed. But we have a - - movb %bl, %ah # second chance - movb %cl, %al - call outidx - jmp s3_1 # do the other tests - -s3_2: movw %cx, %ax # load ah with 0xf and al with 0x35 - orb %bl, %ah # set the upper 4 bits of ah with the orig value - call outidx # write ... - call inidx # ... and reread - andb %cl, %al # turn off the upper 4 bits - pushw %ax - movb %bl, %ah # restore old value in register 0x35 - movb %cl, %al - call outidx - popw %ax - cmpb %ch, %al # setting lower 4 bits was successful => bad - je no_s3 # writing is allowed => this is not an S3 - -s3_1: movw $0x4838, %ax # allow writing to special regs by putting - call outidx # magic number into CRT-register 0x38 - movb %cl, %al # check whether we can write special reg 0x35 - call inidx - movb %al, %bl - andb $0xf0, %al - movb %al, %ah - movb %cl, %al - call outidx - call inidx - andb %ch, %al - jnz no_s3 # no, we can't write => no S3 - - movw %cx, %ax - orb %bl, %ah - call outidx - call inidx - andb %ch, %al - pushw %ax - movb %bl, %ah # restore old value in register 0x35 - movb %cl, %al - call outidx - popw %ax - cmpb %ch, %al - jne no_s31 # writing not possible => no S3 - movb $0x30, %al - call inidx # now get the S3 id ... - leaw idS3, %di - movw $0x10, %cx - repne - scasb - je no_s31 - - movb %bh, %ah - movb $0x38, %al - jmp s3rest - -no_s3: movb $0x35, %al # restore CRT register 0x35 - movb %bl, %ah - call outidx -no_s31: xorw %bp, %bp # Detection failed -s3rest: movb %bh, %ah - movb $0x38, %al # restore old value of CRT register 0x38 - jmp outidx - -idS3: .byte 0x81, 0x82, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95 - .byte 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa8, 0xb0 - -s3_md: .byte 0x54, 0x2b, 0x84 - .byte 0x55, 0x19, 0x84 - .byte 0 - .ascii "S3" - .byte 0 - -# ATI cards. -ati_test: - leaw idati, %si - movw $0x31, %di - movw $0x09, %cx - repe - cmpsb - je atiok - - xorw %bp, %bp -atiok: ret - -idati: .ascii "761295520" - -ati_md: .byte 0x23, 0x19, 0x84 - .byte 0x33, 0x2c, 0x84 - .byte 0x22, 0x1e, 0x64 - .byte 0x21, 0x19, 0x64 - .byte 0x58, 0x21, 0x50 - .byte 0x5b, 0x1e, 0x50 - .byte 0 - .ascii "ATI" - .byte 0 - -# AHEAD -ahead_test: - movw $0x200f, %ax - movw $0x3ce, %dx - outw %ax, %dx - incw %dx - inb %dx, %al - cmpb $0x20, %al - je isahed - - cmpb $0x21, %al - je isahed - - xorw %bp, %bp -isahed: ret - -ahead_md: - .byte 0x22, 0x2c, 0x84 - .byte 0x23, 0x19, 0x84 - .byte 0x24, 0x1c, 0x84 - .byte 0x2f, 0x32, 0xa0 - .byte 0x32, 0x22, 0x50 - .byte 0x34, 0x42, 0x50 - .byte 0 - .ascii "Ahead" - .byte 0 - -# Chips & Tech. -chips_test: - movw $0x3c3, %dx - inb %dx, %al - orb $0x10, %al - outb %al, %dx - movw $0x104, %dx - inb %dx, %al - movb %al, %bl - movw $0x3c3, %dx - inb %dx, %al - andb $0xef, %al - outb %al, %dx - cmpb $0xa5, %bl - je cantok - - xorw %bp, %bp -cantok: ret - -chips_md: - .byte 0x60, 0x19, 0x84 - .byte 0x61, 0x32, 0x84 - .byte 0 - .ascii "Chips & Technologies" - .byte 0 - -# Cirrus Logic 5X0 -cirrus1_test: - movw $0x3d4, %dx - movb $0x0c, %al - outb %al, %dx - incw %dx - inb %dx, %al - movb %al, %bl - xorb %al, %al - outb %al, %dx - decw %dx - movb $0x1f, %al - outb %al, %dx - incw %dx - inb %dx, %al - movb %al, %bh - xorb %ah, %ah - shlb $4, %al - movw %ax, %cx - movb %bh, %al - shrb $4, %al - addw %ax, %cx - shlw $8, %cx - addw $6, %cx - movw %cx, %ax - movw $0x3c4, %dx - outw %ax, %dx - incw %dx - inb %dx, %al - andb %al, %al - jnz nocirr - - movb %bh, %al - outb %al, %dx - inb %dx, %al - cmpb $0x01, %al - je iscirr - -nocirr: xorw %bp, %bp -iscirr: movw $0x3d4, %dx - movb %bl, %al - xorb %ah, %ah - shlw $8, %ax - addw $0x0c, %ax - outw %ax, %dx - ret - -cirrus1_md: - .byte 0x1f, 0x19, 0x84 - .byte 0x20, 0x2c, 0x84 - .byte 0x22, 0x1e, 0x84 - .byte 0x31, 0x25, 0x64 - .byte 0 - .ascii "Cirrus Logic 5X0" - .byte 0 - -# Cirrus Logic 54XX -cirrus5_test: - movw $0x3c4, %dx - movb $6, %al - call inidx - movb %al, %bl # BL=backup - movw $6, %ax - call tstidx - cmpb $0x0f, %al - jne c5fail - - movw $0x1206, %ax - call tstidx - cmpb $0x12, %al - jne c5fail - - movb $0x1e, %al - call inidx - movb %al, %bh - movb %bh, %ah - andb $0xc0, %ah - movb $0x1e, %al - call tstidx - andb $0x3f, %al - jne c5xx - - movb $0x1e, %al - movb %bh, %ah - orb $0x3f, %ah - call tstidx - xorb $0x3f, %al - andb $0x3f, %al -c5xx: pushf - movb $0x1e, %al - movb %bh, %ah - outw %ax, %dx - popf - je c5done - -c5fail: xorw %bp, %bp -c5done: movb $6, %al - movb %bl, %ah - outw %ax, %dx - ret - -cirrus5_md: - .byte 0x14, 0x19, 0x84 - .byte 0x54, 0x2b, 0x84 - .byte 0 - .ascii "Cirrus Logic 54XX" - .byte 0 - -# Cirrus Logic 64XX -- no known extra modes, but must be identified, because -# it's misidentified by the Ahead test. -cirrus6_test: - movw $0x3ce, %dx - movb $0x0a, %al - call inidx - movb %al, %bl # BL=backup - movw $0xce0a, %ax - call tstidx - orb %al, %al - jne c2fail - - movw $0xec0a, %ax - call tstidx - cmpb $0x01, %al - jne c2fail - - movb $0xaa, %al - call inidx # 4X, 5X, 7X and 8X are valid 64XX chip ID's. - shrb $4, %al - subb $4, %al - jz c6done - - decb %al - jz c6done - - subb $2, %al - jz c6done - - decb %al - jz c6done - -c2fail: xorw %bp, %bp -c6done: movb $0x0a, %al - movb %bl, %ah - outw %ax, %dx - ret - -cirrus6_md: - .byte 0 - .ascii "Cirrus Logic 64XX" - .byte 0 - -# Everex / Trident -everex_test: - movw $0x7000, %ax - xorw %bx, %bx - int $0x10 - cmpb $0x70, %al - jne noevrx - - shrw $4, %dx - cmpw $0x678, %dx - je evtrid - - cmpw $0x236, %dx - jne evrxok - -evtrid: leaw trident_md, %bp -evrxok: ret - -noevrx: xorw %bp, %bp - ret - -everex_md: - .byte 0x03, 0x22, 0x50 - .byte 0x04, 0x3c, 0x50 - .byte 0x07, 0x2b, 0x64 - .byte 0x08, 0x4b, 0x64 - .byte 0x0a, 0x19, 0x84 - .byte 0x0b, 0x2c, 0x84 - .byte 0x16, 0x1e, 0x50 - .byte 0x18, 0x1b, 0x64 - .byte 0x21, 0x40, 0xa0 - .byte 0x40, 0x1e, 0x84 - .byte 0 - .ascii "Everex/Trident" - .byte 0 - -# Genoa. -genoa_test: - leaw idgenoa, %si # Check Genoa 'clues' - xorw %ax, %ax - movb %es:(0x37), %al - movw %ax, %di - movw $0x04, %cx - decw %si - decw %di -l1: incw %si - incw %di - movb (%si), %al - testb %al, %al - jz l2 - - cmpb %es:(%di), %al -l2: loope l1 - orw %cx, %cx - je isgen - - xorw %bp, %bp -isgen: ret - -idgenoa: .byte 0x77, 0x00, 0x99, 0x66 - -genoa_md: - .byte 0x58, 0x20, 0x50 - .byte 0x5a, 0x2a, 0x64 - .byte 0x60, 0x19, 0x84 - .byte 0x61, 0x1d, 0x84 - .byte 0x62, 0x20, 0x84 - .byte 0x63, 0x2c, 0x84 - .byte 0x64, 0x3c, 0x84 - .byte 0x6b, 0x4f, 0x64 - .byte 0x72, 0x3c, 0x50 - .byte 0x74, 0x42, 0x50 - .byte 0x78, 0x4b, 0x64 - .byte 0 - .ascii "Genoa" - .byte 0 - -# OAK -oak_test: - leaw idoakvga, %si - movw $0x08, %di - movw $0x08, %cx - repe - cmpsb - je isoak - - xorw %bp, %bp -isoak: ret - -idoakvga: .ascii "OAK VGA " - -oak_md: .byte 0x4e, 0x3c, 0x50 - .byte 0x4f, 0x3c, 0x84 - .byte 0x50, 0x19, 0x84 - .byte 0x51, 0x2b, 0x84 - .byte 0 - .ascii "OAK" - .byte 0 - -# WD Paradise. -paradise_test: - leaw idparadise, %si - movw $0x7d, %di - movw $0x04, %cx - repe - cmpsb - je ispara - - xorw %bp, %bp -ispara: ret - -idparadise: .ascii "VGA=" - -paradise_md: - .byte 0x41, 0x22, 0x50 - .byte 0x47, 0x1c, 0x84 - .byte 0x55, 0x19, 0x84 - .byte 0x54, 0x2c, 0x84 - .byte 0 - .ascii "Paradise" - .byte 0 - -# Trident. -trident_test: - movw $0x3c4, %dx - movb $0x0e, %al - outb %al, %dx - incw %dx - inb %dx, %al - xchgb %al, %ah - xorb %al, %al - outb %al, %dx - inb %dx, %al - xchgb %ah, %al - movb %al, %bl # Strange thing ... in the book this wasn't - andb $0x02, %bl # necessary but it worked on my card which - jz setb2 # is a trident. Without it the screen goes - # blurred ... - andb $0xfd, %al - jmp clrb2 - -setb2: orb $0x02, %al -clrb2: outb %al, %dx - andb $0x0f, %ah - cmpb $0x02, %ah - je istrid - - xorw %bp, %bp -istrid: ret - -trident_md: - .byte 0x50, 0x1e, 0x50 - .byte 0x51, 0x2b, 0x50 - .byte 0x52, 0x3c, 0x50 - .byte 0x57, 0x19, 0x84 - .byte 0x58, 0x1e, 0x84 - .byte 0x59, 0x2b, 0x84 - .byte 0x5a, 0x3c, 0x84 - .byte 0 - .ascii "Trident" - .byte 0 - -# Tseng. -tseng_test: - movw $0x3cd, %dx - inb %dx, %al # Could things be this simple ! :-) - movb %al, %bl - movb $0x55, %al - outb %al, %dx - inb %dx, %al - movb %al, %ah - movb %bl, %al - outb %al, %dx - cmpb $0x55, %ah - je istsen - -isnot: xorw %bp, %bp -istsen: ret - -tseng_md: - .byte 0x26, 0x3c, 0x50 - .byte 0x2a, 0x28, 0x64 - .byte 0x23, 0x19, 0x84 - .byte 0x24, 0x1c, 0x84 - .byte 0x22, 0x2c, 0x84 - .byte 0x21, 0x3c, 0x84 - .byte 0 - .ascii "Tseng" - .byte 0 - -# Video7. -video7_test: - movw $0x3cc, %dx - inb %dx, %al - movw $0x3b4, %dx - andb $0x01, %al - jz even7 - - movw $0x3d4, %dx -even7: movb $0x0c, %al - outb %al, %dx - incw %dx - inb %dx, %al - movb %al, %bl - movb $0x55, %al - outb %al, %dx - inb %dx, %al - decw %dx - movb $0x1f, %al - outb %al, %dx - incw %dx - inb %dx, %al - movb %al, %bh - decw %dx - movb $0x0c, %al - outb %al, %dx - incw %dx - movb %bl, %al - outb %al, %dx - movb $0x55, %al - xorb $0xea, %al - cmpb %bh, %al - jne isnot - - movb $VIDEO_FIRST_V7>>8, svga_prefix # Use special mode switching - ret - -video7_md: - .byte 0x40, 0x2b, 0x50 - .byte 0x43, 0x3c, 0x50 - .byte 0x44, 0x3c, 0x64 - .byte 0x41, 0x19, 0x84 - .byte 0x42, 0x2c, 0x84 - .byte 0x45, 0x1c, 0x84 - .byte 0 - .ascii "Video 7" - .byte 0 - -# Realtek VGA -realtek_test: - leaw idrtvga, %si - movw $0x45, %di - movw $0x0b, %cx - repe - cmpsb - je isrt - - xorw %bp, %bp -isrt: ret - -idrtvga: .ascii "REALTEK VGA" - -realtek_md: - .byte 0x1a, 0x3c, 0x50 - .byte 0x1b, 0x19, 0x84 - .byte 0x1c, 0x1e, 0x84 - .byte 0x1d, 0x2b, 0x84 - .byte 0x1e, 0x3c, 0x84 - .byte 0 - .ascii "REALTEK" - .byte 0 - -#endif /* CONFIG_VIDEO_SVGA */ - -# User-defined local mode table (VGA only) -#ifdef CONFIG_VIDEO_LOCAL -local_modes: - leaw local_mode_table, %si -locm1: lodsw - orw %ax, %ax - jz locm2 - - stosw - movsw - jmp locm1 - -locm2: ret - -# This is the table of local video modes which can be supplied manually -# by the user. Each entry consists of mode ID (word) and dimensions -# (byte for column count and another byte for row count). These modes -# are placed before all SVGA and VESA modes and override them if table -# compacting is enabled. The table must end with a zero word followed -# by NUL-terminated video adapter name. -local_mode_table: - .word 0x0100 # Example: 40x25 - .byte 25,40 - .word 0 - .ascii "Local" - .byte 0 -#endif /* CONFIG_VIDEO_LOCAL */ - -# Read a key and return the ASCII code in al, scan code in ah -getkey: xorb %ah, %ah - int $0x16 - ret - -# Read a key with a timeout of 30 seconds. -# The hardware clock is used to get the time. -getkt: call gettime - addb $30, %al # Wait 30 seconds - cmpb $60, %al - jl lminute - - subb $60, %al -lminute: - movb %al, %cl -again: movb $0x01, %ah - int $0x16 - jnz getkey # key pressed, so get it - - call gettime - cmpb %cl, %al - jne again - - movb $0x20, %al # timeout, return `space' - ret - -# Flush the keyboard buffer -flush: movb $0x01, %ah - int $0x16 - jz empty - - xorb %ah, %ah - int $0x16 - jmp flush - -empty: ret - -# Print hexadecimal number. -prthw: pushw %ax - movb %ah, %al - call prthb - popw %ax -prthb: pushw %ax - shrb $4, %al - call prthn - popw %ax - andb $0x0f, %al -prthn: cmpb $0x0a, %al - jc prth1 - - addb $0x07, %al -prth1: addb $0x30, %al - jmp prtchr - -# Print decimal number in al -prtdec: pushw %ax - pushw %cx - xorb %ah, %ah - movb $0x0a, %cl - idivb %cl - cmpb $0x09, %al - jbe lt100 - - call prtdec - jmp skip10 - -lt100: addb $0x30, %al - call prtchr -skip10: movb %ah, %al - addb $0x30, %al - call prtchr - popw %cx - popw %ax - ret - -store_edid: -#ifdef CONFIG_FIRMWARE_EDID - pushw %es # just save all registers - pushw %ax - pushw %bx - pushw %cx - pushw %dx - pushw %di - - pushw %fs - popw %es - - movl $0x13131313, %eax # memset block with 0x13 - movw $32, %cx - movw $0x140, %di - cld - rep - stosl - - cmpw $0x0200, vbe_version # only do EDID on >= VBE2.0 - jl no_edid - - pushw %es # save ES - xorw %di, %di # Report Capability - pushw %di - popw %es # ES:DI must be 0:0 - movw $0x4f15, %ax - xorw %bx, %bx - xorw %cx, %cx - int $0x10 - popw %es # restore ES - - cmpb $0x00, %ah # call successful - jne no_edid - - cmpb $0x4f, %al # function supported - jne no_edid - - movw $0x4f15, %ax # do VBE/DDC - movw $0x01, %bx - movw $0x00, %cx - movw $0x01, %dx - movw $0x140, %di - int $0x10 - -no_edid: - popw %di # restore all registers - popw %dx - popw %cx - popw %bx - popw %ax - popw %es -#endif - ret - -# VIDEO_SELECT-only variables -mt_end: .word 0 # End of video mode table if built -edit_buf: .space 6 # Line editor buffer -card_name: .word 0 # Pointer to adapter name -scanning: .byte 0 # Performing mode scan -do_restore: .byte 0 # Screen contents altered during mode change -svga_prefix: .byte VIDEO_FIRST_BIOS>>8 # Default prefix for BIOS modes -graphic_mode: .byte 0 # Graphic mode with a linear frame buffer -dac_size: .byte 6 # DAC bit depth -vbe_version: .word 0 # VBE bios version - -# Status messages -keymsg: .ascii "Press <RETURN> to see video modes available, " - .ascii "<SPACE> to continue or wait 30 secs" - .byte 0x0d, 0x0a, 0 - -listhdr: .byte 0x0d, 0x0a - .ascii "Mode: COLSxROWS:" - -crlft: .byte 0x0d, 0x0a, 0 - -prompt: .byte 0x0d, 0x0a - .asciz "Enter mode number or `scan': " - -unknt: .asciz "Unknown mode ID. Try again." - -badmdt: .ascii "You passed an undefined mode number." - .byte 0x0d, 0x0a, 0 - -vesaer: .ascii "Error: Scanning of VESA modes failed. Please " - .ascii "report to <mj@ucw.cz>." - .byte 0x0d, 0x0a, 0 - -old_name: .asciz "CGA/MDA/HGA" - -ega_name: .asciz "EGA" - -svga_name: .ascii " " - -vga_name: .asciz "VGA" - -vesa_name: .asciz "VESA" - -name_bann: .asciz "Video adapter: " -#endif /* CONFIG_VIDEO_SELECT */ - -# Other variables: -adapter: .byte 0 # Video adapter: 0=CGA/MDA/HGA,1=EGA,2=VGA -video_segment: .word 0xb800 # Video memory segment -force_size: .word 0 # Use this size instead of the one in BIOS vars diff --git a/arch/x86_64/defconfig b/arch/x86_64/defconfig index b263788..941a7e3 100644 --- a/arch/x86_64/defconfig +++ b/arch/x86_64/defconfig @@ -1,7 +1,7 @@ # # Automatically generated make config: don't edit -# Linux kernel version: 2.6.21-rc3 -# Wed Mar 7 15:29:47 2007 +# Linux kernel version: 2.6.21-git3 +# Tue May 1 07:30:48 2007 # CONFIG_X86_64=y CONFIG_64BIT=y @@ -118,11 +118,11 @@ CONFIG_X86_PC=y # CONFIG_X86_VSMP is not set # CONFIG_MK8 is not set # CONFIG_MPSC is not set -# CONFIG_MCORE2 is not set -CONFIG_GENERIC_CPU=y -CONFIG_X86_L1_CACHE_BYTES=128 -CONFIG_X86_L1_CACHE_SHIFT=7 -CONFIG_X86_INTERNODE_CACHE_BYTES=128 +CONFIG_MCORE2=y +# CONFIG_GENERIC_CPU is not set +CONFIG_X86_L1_CACHE_BYTES=64 +CONFIG_X86_L1_CACHE_SHIFT=6 +CONFIG_X86_INTERNODE_CACHE_BYTES=64 CONFIG_X86_TSC=y CONFIG_X86_GOOD_APIC=y # CONFIG_MICROCODE is not set @@ -174,6 +174,7 @@ CONFIG_X86_MCE_INTEL=y CONFIG_X86_MCE_AMD=y # CONFIG_KEXEC is not set # CONFIG_CRASH_DUMP is not set +# CONFIG_RELOCATABLE is not set CONFIG_PHYSICAL_START=0x200000 CONFIG_SECCOMP=y # CONFIG_CC_STACKPROTECTOR is not set @@ -182,7 +183,6 @@ CONFIG_HZ_250=y # CONFIG_HZ_300 is not set # CONFIG_HZ_1000 is not set CONFIG_HZ=250 -# CONFIG_REORDER is not set CONFIG_K8_NB=y CONFIG_GENERIC_HARDIRQS=y CONFIG_GENERIC_IRQ_PROBE=y @@ -218,7 +218,6 @@ CONFIG_ACPI_HOTPLUG_CPU=y CONFIG_ACPI_THERMAL=y CONFIG_ACPI_NUMA=y # CONFIG_ACPI_ASUS is not set -# CONFIG_ACPI_IBM is not set # CONFIG_ACPI_TOSHIBA is not set CONFIG_ACPI_BLACKLIST_YEAR=0 # CONFIG_ACPI_DEBUG is not set @@ -243,7 +242,7 @@ CONFIG_CPU_FREQ_GOV_PERFORMANCE=y # CONFIG_CPU_FREQ_GOV_POWERSAVE is not set CONFIG_CPU_FREQ_GOV_USERSPACE=y CONFIG_CPU_FREQ_GOV_ONDEMAND=y -# CONFIG_CPU_FREQ_GOV_CONSERVATIVE is not set +CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y # # CPUFreq processor drivers @@ -299,7 +298,6 @@ CONFIG_NET=y # # Networking options # -# CONFIG_NETDEBUG is not set CONFIG_PACKET=y # CONFIG_PACKET_MMAP is not set CONFIG_UNIX=y @@ -334,6 +332,7 @@ CONFIG_DEFAULT_TCP_CONG="cubic" CONFIG_IPV6=y # CONFIG_IPV6_PRIVACY is not set # CONFIG_IPV6_ROUTER_PREF is not set +# CONFIG_IPV6_OPTIMISTIC_DAD is not set # CONFIG_INET6_AH is not set # CONFIG_INET6_ESP is not set # CONFIG_INET6_IPCOMP is not set @@ -389,6 +388,13 @@ CONFIG_IPV6_SIT=y # CONFIG_HAMRADIO is not set # CONFIG_IRDA is not set # CONFIG_BT is not set +# CONFIG_AF_RXRPC is not set + +# +# Wireless +# +# CONFIG_CFG80211 is not set +# CONFIG_WIRELESS_EXT is not set # CONFIG_IEEE80211 is not set # @@ -409,10 +415,6 @@ CONFIG_FW_LOADER=y # Connector - unified userspace <-> kernelspace linker # # CONFIG_CONNECTOR is not set - -# -# Memory Technology Devices (MTD) -# # CONFIG_MTD is not set # @@ -459,6 +461,7 @@ CONFIG_BLK_DEV_RAM_BLOCKSIZE=1024 # CONFIG_SGI_IOC4 is not set # CONFIG_TIFM_CORE is not set # CONFIG_SONY_LAPTOP is not set +# CONFIG_THINKPAD_ACPI is not set # # ATA/ATAPI/MFM/RLL support @@ -494,7 +497,6 @@ CONFIG_BLK_DEV_IDEPCI=y # CONFIG_BLK_DEV_RZ1000 is not set CONFIG_BLK_DEV_IDEDMA_PCI=y # CONFIG_BLK_DEV_IDEDMA_FORCED is not set -CONFIG_IDEDMA_PCI_AUTO=y # CONFIG_IDEDMA_ONLYDISK is not set # CONFIG_BLK_DEV_AEC62XX is not set # CONFIG_BLK_DEV_ALI15X3 is not set @@ -525,7 +527,6 @@ CONFIG_BLK_DEV_PDC202XX_NEW=y # CONFIG_IDE_ARM is not set CONFIG_BLK_DEV_IDEDMA=y # CONFIG_IDEDMA_IVB is not set -CONFIG_IDEDMA_AUTO=y # CONFIG_BLK_DEV_HD is not set # @@ -584,11 +585,9 @@ CONFIG_AIC79XX_DEBUG_MASK=0 # CONFIG_AIC79XX_REG_PRETTY_PRINT is not set # CONFIG_SCSI_AIC94XX is not set # CONFIG_SCSI_ARCMSR is not set -CONFIG_MEGARAID_NEWGEN=y -CONFIG_MEGARAID_MM=y -CONFIG_MEGARAID_MAILBOX=y +# CONFIG_MEGARAID_NEWGEN is not set # CONFIG_MEGARAID_LEGACY is not set -CONFIG_MEGARAID_SAS=y +# CONFIG_MEGARAID_SAS is not set # CONFIG_SCSI_HPTIOP is not set # CONFIG_SCSI_BUSLOGIC is not set # CONFIG_SCSI_DMX3191D is not set @@ -608,6 +607,7 @@ CONFIG_MEGARAID_SAS=y # CONFIG_SCSI_DC395x is not set # CONFIG_SCSI_DC390T is not set # CONFIG_SCSI_DEBUG is not set +# CONFIG_SCSI_ESP_CORE is not set # CONFIG_SCSI_SRP is not set # @@ -636,6 +636,7 @@ CONFIG_SATA_ACPI=y # CONFIG_PATA_AMD is not set # CONFIG_PATA_ARTOP is not set # CONFIG_PATA_ATIIXP is not set +# CONFIG_PATA_CMD640_PCI is not set # CONFIG_PATA_CMD64X is not set # CONFIG_PATA_CS5520 is not set # CONFIG_PATA_CS5530 is not set @@ -687,7 +688,7 @@ CONFIG_BLK_DEV_DM=y CONFIG_FUSION=y CONFIG_FUSION_SPI=y # CONFIG_FUSION_FC is not set -CONFIG_FUSION_SAS=y +# CONFIG_FUSION_SAS is not set CONFIG_FUSION_MAX_SGE=128 # CONFIG_FUSION_CTL is not set @@ -700,19 +701,22 @@ CONFIG_IEEE1394=y # Subsystem Options # # CONFIG_IEEE1394_VERBOSEDEBUG is not set -# CONFIG_IEEE1394_EXTRA_CONFIG_ROMS is not set # -# Device Drivers +# Controllers +# + +# +# Texas Instruments PCILynx requires I2C # -# CONFIG_IEEE1394_PCILYNX is not set CONFIG_IEEE1394_OHCI1394=y # -# Protocol Drivers +# Protocols # # CONFIG_IEEE1394_VIDEO1394 is not set # CONFIG_IEEE1394_SBP2 is not set +# CONFIG_IEEE1394_ETH1394_ROM_ENTRY is not set # CONFIG_IEEE1394_ETH1394 is not set # CONFIG_IEEE1394_DV1394 is not set CONFIG_IEEE1394_RAWIO=y @@ -775,7 +779,8 @@ CONFIG_TULIP=y # CONFIG_HP100 is not set CONFIG_NET_PCI=y # CONFIG_PCNET32 is not set -# CONFIG_AMD8111_ETH is not set +CONFIG_AMD8111_ETH=y +# CONFIG_AMD8111E_NAPI is not set # CONFIG_ADAPTEC_STARFIRE is not set CONFIG_B44=y CONFIG_FORCEDETH=y @@ -837,9 +842,10 @@ CONFIG_S2IO=m # CONFIG_TR is not set # -# Wireless LAN (non-hamradio) +# Wireless LAN # -# CONFIG_NET_RADIO is not set +# CONFIG_WLAN_PRE80211 is not set +# CONFIG_WLAN_80211 is not set # # Wan interfaces @@ -853,7 +859,6 @@ CONFIG_S2IO=m # CONFIG_SHAPER is not set CONFIG_NETCONSOLE=y CONFIG_NETPOLL=y -# CONFIG_NETPOLL_RX is not set # CONFIG_NETPOLL_TRAP is not set CONFIG_NET_POLL_CONTROLLER=y @@ -987,57 +992,7 @@ CONFIG_HPET_MMAP=y # # I2C support # -CONFIG_I2C=m -CONFIG_I2C_CHARDEV=m - -# -# I2C Algorithms -# -# CONFIG_I2C_ALGOBIT is not set -# CONFIG_I2C_ALGOPCF is not set -# CONFIG_I2C_ALGOPCA is not set - -# -# I2C Hardware Bus support -# -# CONFIG_I2C_ALI1535 is not set -# CONFIG_I2C_ALI1563 is not set -# CONFIG_I2C_ALI15X3 is not set -# CONFIG_I2C_AMD756 is not set -# CONFIG_I2C_AMD8111 is not set -# CONFIG_I2C_I801 is not set -# CONFIG_I2C_I810 is not set -# CONFIG_I2C_PIIX4 is not set -CONFIG_I2C_ISA=m -# CONFIG_I2C_NFORCE2 is not set -# CONFIG_I2C_OCORES is not set -# CONFIG_I2C_PARPORT_LIGHT is not set -# CONFIG_I2C_PASEMI is not set -# CONFIG_I2C_PROSAVAGE is not set -# CONFIG_I2C_SAVAGE4 is not set -# CONFIG_I2C_SIS5595 is not set -# CONFIG_I2C_SIS630 is not set -# CONFIG_I2C_SIS96X is not set -# CONFIG_I2C_STUB is not set -# CONFIG_I2C_VIA is not set -# CONFIG_I2C_VIAPRO is not set -# CONFIG_I2C_VOODOO3 is not set -# CONFIG_I2C_PCA_ISA is not set - -# -# Miscellaneous I2C Chip support -# -# CONFIG_SENSORS_DS1337 is not set -# CONFIG_SENSORS_DS1374 is not set -# CONFIG_SENSORS_EEPROM is not set -# CONFIG_SENSORS_PCF8574 is not set -# CONFIG_SENSORS_PCA9539 is not set -# CONFIG_SENSORS_PCF8591 is not set -# CONFIG_SENSORS_MAX6875 is not set -# CONFIG_I2C_DEBUG_CORE is not set -# CONFIG_I2C_DEBUG_ALGO is not set -# CONFIG_I2C_DEBUG_BUS is not set -# CONFIG_I2C_DEBUG_CHIP is not set +# CONFIG_I2C is not set # # SPI support @@ -1053,54 +1008,8 @@ CONFIG_I2C_ISA=m # # Hardware Monitoring support # -CONFIG_HWMON=y +# CONFIG_HWMON is not set # CONFIG_HWMON_VID is not set -# CONFIG_SENSORS_ABITUGURU is not set -# CONFIG_SENSORS_ADM1021 is not set -# CONFIG_SENSORS_ADM1025 is not set -# CONFIG_SENSORS_ADM1026 is not set -# CONFIG_SENSORS_ADM1029 is not set -# CONFIG_SENSORS_ADM1031 is not set -# CONFIG_SENSORS_ADM9240 is not set -# CONFIG_SENSORS_K8TEMP is not set -# CONFIG_SENSORS_ASB100 is not set -# CONFIG_SENSORS_ATXP1 is not set -# CONFIG_SENSORS_DS1621 is not set -# CONFIG_SENSORS_F71805F is not set -# CONFIG_SENSORS_FSCHER is not set -# CONFIG_SENSORS_FSCPOS is not set -# CONFIG_SENSORS_GL518SM is not set -# CONFIG_SENSORS_GL520SM is not set -# CONFIG_SENSORS_IT87 is not set -# CONFIG_SENSORS_LM63 is not set -# CONFIG_SENSORS_LM75 is not set -# CONFIG_SENSORS_LM77 is not set -# CONFIG_SENSORS_LM78 is not set -# CONFIG_SENSORS_LM80 is not set -# CONFIG_SENSORS_LM83 is not set -# CONFIG_SENSORS_LM85 is not set -# CONFIG_SENSORS_LM87 is not set -# CONFIG_SENSORS_LM90 is not set -# CONFIG_SENSORS_LM92 is not set -# CONFIG_SENSORS_MAX1619 is not set -# CONFIG_SENSORS_PC87360 is not set -# CONFIG_SENSORS_PC87427 is not set -# CONFIG_SENSORS_SIS5595 is not set -# CONFIG_SENSORS_SMSC47M1 is not set -# CONFIG_SENSORS_SMSC47M192 is not set -CONFIG_SENSORS_SMSC47B397=m -# CONFIG_SENSORS_VIA686A is not set -# CONFIG_SENSORS_VT1211 is not set -# CONFIG_SENSORS_VT8231 is not set -# CONFIG_SENSORS_W83781D is not set -# CONFIG_SENSORS_W83791D is not set -# CONFIG_SENSORS_W83792D is not set -# CONFIG_SENSORS_W83793 is not set -# CONFIG_SENSORS_W83L785TS is not set -# CONFIG_SENSORS_W83627HF is not set -# CONFIG_SENSORS_W83627EHF is not set -# CONFIG_SENSORS_HDAPS is not set -# CONFIG_HWMON_DEBUG_CHIP is not set # # Multifunction device drivers @@ -1147,8 +1056,9 @@ CONFIG_SOUND=y # Open Sound System # CONFIG_SOUND_PRIME=y -# CONFIG_OBSOLETE_OSS is not set +CONFIG_OBSOLETE_OSS=y # CONFIG_SOUND_BT878 is not set +# CONFIG_SOUND_ES1371 is not set CONFIG_SOUND_ICH=y # CONFIG_SOUND_TRIDENT is not set # CONFIG_SOUND_MSNDCLAS is not set @@ -1163,6 +1073,14 @@ CONFIG_HID=y # CONFIG_HID_DEBUG is not set # +# USB Input Devices +# +CONFIG_USB_HID=y +# CONFIG_USB_HIDINPUT_POWERBOOK is not set +# CONFIG_HID_FF is not set +# CONFIG_USB_HIDDEV is not set + +# # USB support # CONFIG_USB_ARCH_HAS_HCD=y @@ -1175,6 +1093,7 @@ CONFIG_USB=y # Miscellaneous USB options # CONFIG_USB_DEVICEFS=y +# CONFIG_USB_DEVICE_CLASS is not set # CONFIG_USB_DYNAMIC_MINORS is not set # CONFIG_USB_SUSPEND is not set # CONFIG_USB_OTG is not set @@ -1225,10 +1144,6 @@ CONFIG_USB_STORAGE=y # # USB Input Devices # -CONFIG_USB_HID=y -# CONFIG_USB_HIDINPUT_POWERBOOK is not set -# CONFIG_HID_FF is not set -# CONFIG_USB_HIDDEV is not set # CONFIG_USB_AIPTEK is not set # CONFIG_USB_WACOM is not set # CONFIG_USB_ACECAD is not set @@ -1556,7 +1471,7 @@ CONFIG_DEBUG_KERNEL=y CONFIG_LOG_BUF_SHIFT=18 CONFIG_DETECT_SOFTLOCKUP=y # CONFIG_SCHEDSTATS is not set -# CONFIG_TIMER_STATS is not set +CONFIG_TIMER_STATS=y # CONFIG_DEBUG_SLAB is not set # CONFIG_DEBUG_RT_MUTEXES is not set # CONFIG_RT_MUTEX_TESTER is not set diff --git a/arch/x86_64/ia32/ia32_binfmt.c b/arch/x86_64/ia32/ia32_binfmt.c index 071100e..185399b 100644 --- a/arch/x86_64/ia32/ia32_binfmt.c +++ b/arch/x86_64/ia32/ia32_binfmt.c @@ -5,6 +5,11 @@ * This tricks binfmt_elf.c into loading 32bit binaries using lots * of ugly preprocessor tricks. Talk about very very poor man's inheritance. */ +#define __ASM_X86_64_ELF_H 1 + +#undef ELF_CLASS +#define ELF_CLASS ELFCLASS32 + #include <linux/types.h> #include <linux/stddef.h> #include <linux/rwsem.h> @@ -50,9 +55,6 @@ struct elf_phdr; #undef ELF_ARCH #define ELF_ARCH EM_386 -#undef ELF_CLASS -#define ELF_CLASS ELFCLASS32 - #define ELF_DATA ELFDATA2LSB #define USE_ELF_CORE_DUMP 1 @@ -136,7 +138,7 @@ struct elf_prpsinfo #define user user32 -#define __ASM_X86_64_ELF_H 1 +#undef elf_read_implies_exec #define elf_read_implies_exec(ex, executable_stack) (executable_stack != EXSTACK_DISABLE_X) //#include <asm/ia32.h> #include <linux/elf.h> diff --git a/arch/x86_64/ia32/ia32entry.S b/arch/x86_64/ia32/ia32entry.S index 796df69..c48087d 100644 --- a/arch/x86_64/ia32/ia32entry.S +++ b/arch/x86_64/ia32/ia32entry.S @@ -481,11 +481,7 @@ ia32_sys_call_table: .quad sys_symlink .quad sys_lstat .quad sys_readlink /* 85 */ -#ifdef CONFIG_IA32_AOUT .quad sys_uselib -#else - .quad quiet_ni_syscall -#endif .quad sys_swapon .quad sys_reboot .quad compat_sys_old_readdir diff --git a/arch/x86_64/ia32/syscall32.c b/arch/x86_64/ia32/syscall32.c index 568ff0d..fc4419f 100644 --- a/arch/x86_64/ia32/syscall32.c +++ b/arch/x86_64/ia32/syscall32.c @@ -13,6 +13,7 @@ #include <asm/proto.h> #include <asm/tlbflush.h> #include <asm/ia32_unistd.h> +#include <asm/vsyscall32.h> extern unsigned char syscall32_syscall[], syscall32_syscall_end[]; extern unsigned char syscall32_sysenter[], syscall32_sysenter_end[]; diff --git a/arch/x86_64/kernel/Makefile b/arch/x86_64/kernel/Makefile index bb47e86..4d94c51 100644 --- a/arch/x86_64/kernel/Makefile +++ b/arch/x86_64/kernel/Makefile @@ -8,7 +8,8 @@ obj-y := process.o signal.o entry.o traps.o irq.o \ ptrace.o time.o ioport.o ldt.o setup.o i8259.o sys_x86_64.o \ x8664_ksyms.o i387.o syscall.o vsyscall.o \ setup64.o bootflag.o e820.o reboot.o quirks.o i8237.o \ - pci-dma.o pci-nommu.o alternative.o hpet.o tsc.o + pci-dma.o pci-nommu.o alternative.o hpet.o tsc.o bugs.o \ + perfctr-watchdog.o obj-$(CONFIG_STACKTRACE) += stacktrace.o obj-$(CONFIG_X86_MCE) += mce.o therm_throt.o @@ -21,8 +22,7 @@ obj-$(CONFIG_MICROCODE) += microcode.o obj-$(CONFIG_X86_CPUID) += cpuid.o obj-$(CONFIG_SMP) += smp.o smpboot.o trampoline.o tsc_sync.o obj-y += apic.o nmi.o -obj-y += io_apic.o mpparse.o \ - genapic.o genapic_cluster.o genapic_flat.o +obj-y += io_apic.o mpparse.o genapic.o genapic_flat.o obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o crash.o obj-$(CONFIG_CRASH_DUMP) += crash_dump.o obj-$(CONFIG_PM) += suspend.o @@ -58,3 +58,4 @@ i8237-y += ../../i386/kernel/i8237.o msr-$(subst m,y,$(CONFIG_X86_MSR)) += ../../i386/kernel/msr.o alternative-y += ../../i386/kernel/alternative.o pcspeaker-y += ../../i386/kernel/pcspeaker.o +perfctr-watchdog-y += ../../i386/kernel/cpu/perfctr-watchdog.o diff --git a/arch/x86_64/kernel/acpi/sleep.c b/arch/x86_64/kernel/acpi/sleep.c index e1548fb..195b703 100644 --- a/arch/x86_64/kernel/acpi/sleep.c +++ b/arch/x86_64/kernel/acpi/sleep.c @@ -60,19 +60,6 @@ extern char wakeup_start, wakeup_end; extern unsigned long acpi_copy_wakeup_routine(unsigned long); -static pgd_t low_ptr; - -static void init_low_mapping(void) -{ - pgd_t *slot0 = pgd_offset(current->mm, 0UL); - low_ptr = *slot0; - /* FIXME: We're playing with the current task's page tables here, which - * is potentially dangerous on SMP systems. - */ - set_pgd(slot0, *pgd_offset(current->mm, PAGE_OFFSET)); - local_flush_tlb(); -} - /** * acpi_save_state_mem - save kernel state * @@ -81,8 +68,6 @@ static void init_low_mapping(void) */ int acpi_save_state_mem(void) { - init_low_mapping(); - memcpy((void *)acpi_wakeup_address, &wakeup_start, &wakeup_end - &wakeup_start); acpi_copy_wakeup_routine(acpi_wakeup_address); @@ -95,8 +80,6 @@ int acpi_save_state_mem(void) */ void acpi_restore_state_mem(void) { - set_pgd(pgd_offset(current->mm, 0UL), low_ptr); - local_flush_tlb(); } /** @@ -109,10 +92,11 @@ void acpi_restore_state_mem(void) */ void __init acpi_reserve_bootmem(void) { - acpi_wakeup_address = (unsigned long)alloc_bootmem_low(PAGE_SIZE); - if ((&wakeup_end - &wakeup_start) > PAGE_SIZE) + acpi_wakeup_address = (unsigned long)alloc_bootmem_low(PAGE_SIZE*2); + if ((&wakeup_end - &wakeup_start) > (PAGE_SIZE*2)) printk(KERN_CRIT - "ACPI: Wakeup code way too big, will crash on attempt to suspend\n"); + "ACPI: Wakeup code way too big, will crash on attempt" + " to suspend\n"); } static int __init acpi_sleep_setup(char *str) diff --git a/arch/x86_64/kernel/acpi/wakeup.S b/arch/x86_64/kernel/acpi/wakeup.S index 185faa9..8550a6f 100644 --- a/arch/x86_64/kernel/acpi/wakeup.S +++ b/arch/x86_64/kernel/acpi/wakeup.S @@ -1,6 +1,7 @@ .text #include <linux/linkage.h> #include <asm/segment.h> +#include <asm/pgtable.h> #include <asm/page.h> #include <asm/msr.h> @@ -30,22 +31,28 @@ wakeup_code: cld # setup data segment movw %cs, %ax - movw %ax, %ds # Make ds:0 point to wakeup_start + movw %ax, %ds # Make ds:0 point to wakeup_start movw %ax, %ss - mov $(wakeup_stack - wakeup_code), %sp # Private stack is needed for ASUS board + # Private stack is needed for ASUS board + mov $(wakeup_stack - wakeup_code), %sp - pushl $0 # Kill any dangerous flags + pushl $0 # Kill any dangerous flags popfl movl real_magic - wakeup_code, %eax cmpl $0x12345678, %eax jne bogus_real_magic + call verify_cpu # Verify the cpu supports long + # mode + testl %eax, %eax + jnz no_longmode + testl $1, video_flags - wakeup_code jz 1f lcall $0xc000,$3 movw %cs, %ax - movw %ax, %ds # Bios might have played with that + movw %ax, %ds # Bios might have played with that movw %ax, %ss 1: @@ -61,12 +68,15 @@ wakeup_code: movb $0xa2, %al ; outb %al, $0x80 - lidt %ds:idt_48a - wakeup_code - xorl %eax, %eax - movw %ds, %ax # (Convert %ds:gdt to a linear ptr) - shll $4, %eax - addl $(gdta - wakeup_code), %eax - movl %eax, gdt_48a +2 - wakeup_code + mov %ds, %ax # Find 32bit wakeup_code addr + movzx %ax, %esi # (Convert %ds:gdt to a liner ptr) + shll $4, %esi + # Fix up the vectors + addl %esi, wakeup_32_vector - wakeup_code + addl %esi, wakeup_long64_vector - wakeup_code + addl %esi, gdt_48a + 2 - wakeup_code # Fixup the gdt pointer + + lidtl %ds:idt_48a - wakeup_code lgdtl %ds:gdt_48a - wakeup_code # load gdt with whatever is # appropriate @@ -75,86 +85,63 @@ wakeup_code: jmp 1f 1: - .byte 0x66, 0xea # prefix + jmpi-opcode - .long wakeup_32 - __START_KERNEL_map - .word __KERNEL_CS + ljmpl *(wakeup_32_vector - wakeup_code) + + .balign 4 +wakeup_32_vector: + .long wakeup_32 - wakeup_code + .word __KERNEL32_CS, 0 .code32 wakeup_32: # Running in this code, but at low address; paging is not yet turned on. movb $0xa5, %al ; outb %al, $0x80 - /* Check if extended functions are implemented */ - movl $0x80000000, %eax - cpuid - cmpl $0x80000000, %eax - jbe bogus_cpu - wbinvd - mov $0x80000001, %eax - cpuid - btl $29, %edx - jnc bogus_cpu - movl %edx,%edi - - movw $__KERNEL_DS, %ax - movw %ax, %ds - movw %ax, %es - movw %ax, %fs - movw %ax, %gs - - movw $__KERNEL_DS, %ax - movw %ax, %ss + movl $__KERNEL_DS, %eax + movl %eax, %ds - mov $(wakeup_stack - __START_KERNEL_map), %esp - movl saved_magic - __START_KERNEL_map, %eax - cmpl $0x9abcdef0, %eax - jne bogus_32_magic + movw $0x0e00 + 'i', %ds:(0xb8012) + movb $0xa8, %al ; outb %al, $0x80; /* * Prepare for entering 64bits mode */ - /* Enable PAE mode and PGE */ + /* Enable PAE */ xorl %eax, %eax btsl $5, %eax - btsl $7, %eax movl %eax, %cr4 /* Setup early boot stage 4 level pagetables */ - movl $(wakeup_level4_pgt - __START_KERNEL_map), %eax + leal (wakeup_level4_pgt - wakeup_code)(%esi), %eax movl %eax, %cr3 - /* Setup EFER (Extended Feature Enable Register) */ - movl $MSR_EFER, %ecx - rdmsr - /* Fool rdmsr and reset %eax to avoid dependences */ - xorl %eax, %eax + /* Check if nx is implemented */ + movl $0x80000001, %eax + cpuid + movl %edx,%edi + /* Enable Long Mode */ + xorl %eax, %eax btsl $_EFER_LME, %eax - /* Enable System Call */ - btsl $_EFER_SCE, %eax - /* No Execute supported? */ + /* No Execute supported? */ btl $20,%edi jnc 1f btsl $_EFER_NX, %eax -1: /* Make changes effective */ +1: movl $MSR_EFER, %ecx + xorl %edx, %edx wrmsr - wbinvd xorl %eax, %eax btsl $31, %eax /* Enable paging and in turn activate Long Mode */ btsl $0, %eax /* Enable protected mode */ - btsl $1, %eax /* Enable MP */ - btsl $4, %eax /* Enable ET */ - btsl $5, %eax /* Enable NE */ - btsl $16, %eax /* Enable WP */ - btsl $18, %eax /* Enable AM */ /* Make changes effective */ movl %eax, %cr0 + /* At this point: CR4.PAE must be 1 CS.L must be 0 @@ -162,11 +149,6 @@ wakeup_32: Next instruction must be a branch This must be on identity-mapped page */ - jmp reach_compatibility_mode -reach_compatibility_mode: - movw $0x0e00 + 'i', %ds:(0xb8012) - movb $0xa8, %al ; outb %al, $0x80; - /* * At this point we're in long mode but in 32bit compatibility mode * with EFER.LME = 1, CS.L = 0, CS.D = 1 (and in turn @@ -174,24 +156,19 @@ reach_compatibility_mode: * the new gdt/idt that has __KERNEL_CS with CS.L = 1. */ - movw $0x0e00 + 'n', %ds:(0xb8014) - movb $0xa9, %al ; outb %al, $0x80 - - /* Load new GDT with the 64bit segment using 32bit descriptor */ - movl $(pGDT32 - __START_KERNEL_map), %eax - lgdt (%eax) - - movl $(wakeup_jumpvector - __START_KERNEL_map), %eax /* Finally jump in 64bit mode */ - ljmp *(%eax) + ljmp *(wakeup_long64_vector - wakeup_code)(%esi) -wakeup_jumpvector: - .long wakeup_long64 - __START_KERNEL_map - .word __KERNEL_CS + .balign 4 +wakeup_long64_vector: + .long wakeup_long64 - wakeup_code + .word __KERNEL_CS, 0 .code64 - /* Hooray, we are in Long 64-bit mode (but still running in low memory) */ + /* Hooray, we are in Long 64-bit mode (but still running in + * low memory) + */ wakeup_long64: /* * We must switch to a new descriptor in kernel space for the GDT @@ -199,7 +176,15 @@ wakeup_long64: * addresses where we're currently running on. We have to do that here * because in 32bit we couldn't load a 64bit linear address. */ - lgdt cpu_gdt_descr - __START_KERNEL_map + lgdt cpu_gdt_descr + + movw $0x0e00 + 'n', %ds:(0xb8014) + movb $0xa9, %al ; outb %al, $0x80 + + movq saved_magic, %rax + movq $0x123456789abcdef0, %rdx + cmpq %rdx, %rax + jne bogus_64_magic movw $0x0e00 + 'u', %ds:(0xb8016) @@ -211,75 +196,58 @@ wakeup_long64: movw %ax, %es movw %ax, %fs movw %ax, %gs - movq saved_esp, %rsp + movq saved_rsp, %rsp movw $0x0e00 + 'x', %ds:(0xb8018) - movq saved_ebx, %rbx - movq saved_edi, %rdi - movq saved_esi, %rsi - movq saved_ebp, %rbp + movq saved_rbx, %rbx + movq saved_rdi, %rdi + movq saved_rsi, %rsi + movq saved_rbp, %rbp movw $0x0e00 + '!', %ds:(0xb801a) - movq saved_eip, %rax + movq saved_rip, %rax jmp *%rax .code32 .align 64 gdta: + /* Its good to keep gdt in sync with one in trampoline.S */ .word 0, 0, 0, 0 # dummy - - .word 0, 0, 0, 0 # unused - - .word 0xFFFF # 4Gb - (0x100000*0x1000 = 4Gb) - .word 0 # base address = 0 - .word 0x9B00 # code read/exec. ??? Why I need 0x9B00 (as opposed to 0x9A00 in order for this to work?) - .word 0x00CF # granularity = 4096, 386 - # (+5th nibble of limit) - - .word 0xFFFF # 4Gb - (0x100000*0x1000 = 4Gb) - .word 0 # base address = 0 - .word 0x9200 # data read/write - .word 0x00CF # granularity = 4096, 386 - # (+5th nibble of limit) -# this is 64bit descriptor for code - .word 0xFFFF - .word 0 - .word 0x9A00 # code read/exec - .word 0x00AF # as above, but it is long mode and with D=0 + /* ??? Why I need the accessed bit set in order for this to work? */ + .quad 0x00cf9b000000ffff # __KERNEL32_CS + .quad 0x00af9b000000ffff # __KERNEL_CS + .quad 0x00cf93000000ffff # __KERNEL_DS idt_48a: .word 0 # idt limit = 0 .word 0, 0 # idt base = 0L gdt_48a: - .word 0x8000 # gdt limit=2048, + .word 0x800 # gdt limit=2048, # 256 GDT entries - .word 0, 0 # gdt base (filled in later) - + .long gdta - wakeup_code # gdt base (relocated in later) -real_save_gdt: .word 0 - .quad 0 real_magic: .quad 0 video_mode: .quad 0 video_flags: .quad 0 +.code16 bogus_real_magic: - movb $0xba,%al ; outb %al,$0x80 + movb $0xba,%al ; outb %al,$0x80 jmp bogus_real_magic -bogus_32_magic: +.code64 +bogus_64_magic: movb $0xb3,%al ; outb %al,$0x80 - jmp bogus_32_magic + jmp bogus_64_magic -bogus_31_magic: - movb $0xb1,%al ; outb %al,$0x80 - jmp bogus_31_magic - -bogus_cpu: - movb $0xbc,%al ; outb %al,$0x80 - jmp bogus_cpu +.code16 +no_longmode: + movb $0xbc,%al ; outb %al,$0x80 + jmp no_longmode +#include "../verify_cpu.S" /* This code uses an extended set of video mode numbers. These include: * Aliases for standard modes @@ -301,6 +269,7 @@ bogus_cpu: #define VIDEO_FIRST_V7 0x0900 # Setting of user mode (AX=mode ID) => CF=success +.code16 mode_seta: movw %ax, %bx #if 0 @@ -346,21 +315,18 @@ check_vesaa: _setbada: jmp setbada - .code64 -bogus_magic: - movw $0x0e00 + 'B', %ds:(0xb8018) - jmp bogus_magic - -bogus_magic2: - movw $0x0e00 + '2', %ds:(0xb8018) - jmp bogus_magic2 - - wakeup_stack_begin: # Stack grows down .org 0xff0 wakeup_stack: # Just below end of page +.org 0x1000 +ENTRY(wakeup_level4_pgt) + .quad level3_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE + .fill 510,8,0 + /* (2^48-(2*1024*1024*1024))/(2^39) = 511 */ + .quad level3_kernel_pgt - __START_KERNEL_map + _KERNPG_TABLE + ENTRY(wakeup_end) ## @@ -373,28 +339,11 @@ ENTRY(wakeup_end) # # Returned address is location of code in low memory (past data and stack) # + .code64 ENTRY(acpi_copy_wakeup_routine) pushq %rax - pushq %rcx pushq %rdx - sgdt saved_gdt - sidt saved_idt - sldt saved_ldt - str saved_tss - - movq %cr3, %rdx - movq %rdx, saved_cr3 - movq %cr4, %rdx - movq %rdx, saved_cr4 - movq %cr0, %rdx - movq %rdx, saved_cr0 - sgdt real_save_gdt - wakeup_start (,%rdi) - movl $MSR_EFER, %ecx - rdmsr - movl %eax, saved_efer - movl %edx, saved_efer2 - movl saved_video_mode, %edx movl %edx, video_mode - wakeup_start (,%rdi) movl acpi_video_flags, %edx @@ -403,21 +352,13 @@ ENTRY(acpi_copy_wakeup_routine) movq $0x123456789abcdef0, %rdx movq %rdx, saved_magic - movl saved_magic - __START_KERNEL_map, %eax - cmpl $0x9abcdef0, %eax - jne bogus_32_magic - - # make sure %cr4 is set correctly (features, etc) - movl saved_cr4 - __START_KERNEL_map, %eax - movq %rax, %cr4 + movq saved_magic, %rax + movq $0x123456789abcdef0, %rdx + cmpq %rdx, %rax + jne bogus_64_magic - movl saved_cr0 - __START_KERNEL_map, %eax - movq %rax, %cr0 - jmp 1f # Flush pipelines -1: # restore the regs we used popq %rdx - popq %rcx popq %rax ENTRY(do_suspend_lowlevel_s4bios) ret @@ -450,13 +391,13 @@ do_suspend_lowlevel: movq %r15, saved_context_r15(%rip) pushfq ; popq saved_context_eflags(%rip) - movq $.L97, saved_eip(%rip) + movq $.L97, saved_rip(%rip) - movq %rsp,saved_esp - movq %rbp,saved_ebp - movq %rbx,saved_ebx - movq %rdi,saved_edi - movq %rsi,saved_esi + movq %rsp,saved_rsp + movq %rbp,saved_rbp + movq %rbx,saved_rbx + movq %rdi,saved_rdi + movq %rsi,saved_rsi addq $8, %rsp movl $3, %edi @@ -503,25 +444,12 @@ do_suspend_lowlevel: .data ALIGN -ENTRY(saved_ebp) .quad 0 -ENTRY(saved_esi) .quad 0 -ENTRY(saved_edi) .quad 0 -ENTRY(saved_ebx) .quad 0 +ENTRY(saved_rbp) .quad 0 +ENTRY(saved_rsi) .quad 0 +ENTRY(saved_rdi) .quad 0 +ENTRY(saved_rbx) .quad 0 -ENTRY(saved_eip) .quad 0 -ENTRY(saved_esp) .quad 0 +ENTRY(saved_rip) .quad 0 +ENTRY(saved_rsp) .quad 0 ENTRY(saved_magic) .quad 0 - -ALIGN -# saved registers -saved_gdt: .quad 0,0 -saved_idt: .quad 0,0 -saved_ldt: .quad 0 -saved_tss: .quad 0 - -saved_cr0: .quad 0 -saved_cr3: .quad 0 -saved_cr4: .quad 0 -saved_efer: .quad 0 -saved_efer2: .quad 0 diff --git a/arch/x86_64/kernel/aperture.c b/arch/x86_64/kernel/aperture.c index b487396..a52af58 100644 --- a/arch/x86_64/kernel/aperture.c +++ b/arch/x86_64/kernel/aperture.c @@ -51,7 +51,6 @@ static void __init insert_aperture_resource(u32 aper_base, u32 aper_size) static u32 __init allocate_aperture(void) { - pg_data_t *nd0 = NODE_DATA(0); u32 aper_size; void *p; @@ -65,12 +64,12 @@ static u32 __init allocate_aperture(void) * Unfortunately we cannot move it up because that would make the * IOMMU useless. */ - p = __alloc_bootmem_node(nd0, aper_size, aper_size, 0); + p = __alloc_bootmem_nopanic(aper_size, aper_size, 0); if (!p || __pa(p)+aper_size > 0xffffffff) { printk("Cannot allocate aperture memory hole (%p,%uK)\n", p, aper_size>>10); if (p) - free_bootmem_node(nd0, __pa(p), aper_size); + free_bootmem(__pa(p), aper_size); return 0; } printk("Mapping aperture over %d KB of RAM @ %lx\n", diff --git a/arch/x86_64/kernel/apic.c b/arch/x86_64/kernel/apic.c index bd3e45d..d198f7d 100644 --- a/arch/x86_64/kernel/apic.c +++ b/arch/x86_64/kernel/apic.c @@ -68,6 +68,28 @@ int using_apic_timer __read_mostly = 0; static void apic_pm_activate(void); +void apic_wait_icr_idle(void) +{ + while (apic_read(APIC_ICR) & APIC_ICR_BUSY) + cpu_relax(); +} + +unsigned int safe_apic_wait_icr_idle(void) +{ + unsigned int send_status; + int timeout; + + timeout = 0; + do { + send_status = apic_read(APIC_ICR) & APIC_ICR_BUSY; + if (!send_status) + break; + udelay(100); + } while (timeout++ < 1000); + + return send_status; +} + void enable_NMI_through_LVT0 (void * dummy) { unsigned int v; @@ -817,14 +839,15 @@ static void setup_APIC_timer(unsigned int clocks) static int __init calibrate_APIC_clock(void) { - int apic, apic_start, tsc, tsc_start; + unsigned apic, apic_start; + unsigned long tsc, tsc_start; int result; /* * Put whatever arbitrary (but long enough) timeout * value into the APIC clock, we just want to get the * counter running for calibration. */ - __setup_APIC_LVTT(1000000000); + __setup_APIC_LVTT(4000000000); apic_start = apic_read(APIC_TMCCT); #ifdef CONFIG_X86_PM_TIMER @@ -835,15 +858,15 @@ static int __init calibrate_APIC_clock(void) } else #endif { - rdtscl(tsc_start); + rdtscll(tsc_start); do { apic = apic_read(APIC_TMCCT); - rdtscl(tsc); + rdtscll(tsc); } while ((tsc - tsc_start) < TICK_COUNT && - (apic - apic_start) < TICK_COUNT); + (apic_start - apic) < TICK_COUNT); - result = (apic_start - apic) * 1000L * cpu_khz / + result = (apic_start - apic) * 1000L * tsc_khz / (tsc - tsc_start); } printk("result %d\n", result); diff --git a/arch/x86_64/kernel/asm-offsets.c b/arch/x86_64/kernel/asm-offsets.c index 96687e2b..778953b 100644 --- a/arch/x86_64/kernel/asm-offsets.c +++ b/arch/x86_64/kernel/asm-offsets.c @@ -21,6 +21,14 @@ #define BLANK() asm volatile("\n->" : : ) +#define __NO_STUBS 1 +#undef __SYSCALL +#undef _ASM_X86_64_UNISTD_H_ +#define __SYSCALL(nr, sym) [nr] = 1, +static char syscalls[] = { +#include <asm/unistd.h> +}; + int main(void) { #define ENTRY(entry) DEFINE(tsk_ ## entry, offsetof(struct task_struct, entry)) @@ -71,5 +79,7 @@ int main(void) DEFINE(TSS_ist, offsetof(struct tss_struct, ist)); BLANK(); DEFINE(crypto_tfm_ctx_offset, offsetof(struct crypto_tfm, __crt_ctx)); + BLANK(); + DEFINE(__NR_syscall_max, sizeof(syscalls) - 1); return 0; } diff --git a/arch/x86_64/kernel/bugs.c b/arch/x86_64/kernel/bugs.c new file mode 100644 index 0000000..12b585b --- /dev/null +++ b/arch/x86_64/kernel/bugs.c @@ -0,0 +1,21 @@ +/* + * arch/x86_64/kernel/bugs.c + * + * Copyright (C) 1994 Linus Torvalds + * Copyright (C) 2000 SuSE + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <asm/alternative.h> +#include <asm/processor.h> + +void __init check_bugs(void) +{ + identify_cpu(&boot_cpu_data); +#if !defined(CONFIG_SMP) + printk("CPU: "); + print_cpu_info(&boot_cpu_data); +#endif + alternative_instructions(); +} diff --git a/arch/x86_64/kernel/e820.c b/arch/x86_64/kernel/e820.c index a490fab..be89654 100644 --- a/arch/x86_64/kernel/e820.c +++ b/arch/x86_64/kernel/e820.c @@ -25,7 +25,7 @@ #include <asm/bootsetup.h> #include <asm/sections.h> -struct e820map e820 __initdata; +struct e820map e820; /* * PFN of last memory page. @@ -98,7 +98,7 @@ static inline int bad_addr(unsigned long *addrp, unsigned long size) * This function checks if any part of the range <start,end> is mapped * with type. */ -int __meminit +int e820_any_mapped(unsigned long start, unsigned long end, unsigned type) { int i; @@ -112,6 +112,7 @@ e820_any_mapped(unsigned long start, unsigned long end, unsigned type) } return 0; } +EXPORT_SYMBOL_GPL(e820_any_mapped); /* * This function checks if the entire range <start,end> is mapped with type. diff --git a/arch/x86_64/kernel/early-quirks.c b/arch/x86_64/kernel/early-quirks.c index fede55a..990d9c2 100644 --- a/arch/x86_64/kernel/early-quirks.c +++ b/arch/x86_64/kernel/early-quirks.c @@ -71,18 +71,6 @@ static void __init ati_bugs(void) } } -static void intel_bugs(void) -{ - u16 device = read_pci_config_16(0, 0, 0, PCI_DEVICE_ID); - -#ifdef CONFIG_SMP - if (device == PCI_DEVICE_ID_INTEL_E7320_MCH || - device == PCI_DEVICE_ID_INTEL_E7520_MCH || - device == PCI_DEVICE_ID_INTEL_E7525_MCH) - quirk_intel_irqbalance(); -#endif -} - struct chipset { u16 vendor; void (*f)(void); @@ -92,7 +80,6 @@ static struct chipset early_qrk[] __initdata = { { PCI_VENDOR_ID_NVIDIA, nvidia_bugs }, { PCI_VENDOR_ID_VIA, via_bugs }, { PCI_VENDOR_ID_ATI, ati_bugs }, - { PCI_VENDOR_ID_INTEL, intel_bugs}, {} }; diff --git a/arch/x86_64/kernel/early_printk.c b/arch/x86_64/kernel/early_printk.c index 47b6d903..92213d2 100644 --- a/arch/x86_64/kernel/early_printk.c +++ b/arch/x86_64/kernel/early_printk.c @@ -11,11 +11,10 @@ #ifdef __i386__ #include <asm/setup.h> -#define VGABASE (__ISA_IO_base + 0xb8000) #else #include <asm/bootsetup.h> -#define VGABASE ((void __iomem *)0xffffffff800b8000UL) #endif +#define VGABASE (__ISA_IO_base + 0xb8000) static int max_ypos = 25, max_xpos = 80; static int current_ypos = 25, current_xpos = 0; @@ -176,7 +175,7 @@ static noinline long simnow(long cmd, long a, long b, long c) return ret; } -void __init simnow_init(char *str) +static void __init simnow_init(char *str) { char *fn = "klog"; if (*str == '=') diff --git a/arch/x86_64/kernel/entry.S b/arch/x86_64/kernel/entry.S index ed4350c..fa984b5 100644 --- a/arch/x86_64/kernel/entry.S +++ b/arch/x86_64/kernel/entry.S @@ -701,6 +701,7 @@ END(spurious_interrupt) CFI_ADJUST_CFA_OFFSET 8 pushq %rax /* push real oldrax to the rdi slot */ CFI_ADJUST_CFA_OFFSET 8 + CFI_REL_OFFSET rax,0 leaq \sym(%rip),%rax jmp error_entry CFI_ENDPROC @@ -710,6 +711,7 @@ END(spurious_interrupt) XCPT_FRAME pushq %rax CFI_ADJUST_CFA_OFFSET 8 + CFI_REL_OFFSET rax,0 leaq \sym(%rip),%rax jmp error_entry CFI_ENDPROC @@ -817,6 +819,7 @@ paranoid_schedule\trace: */ KPROBE_ENTRY(error_entry) _frame RDI + CFI_REL_OFFSET rax,0 /* rdi slot contains 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#include <linux/string.h> +#include <linux/module.h> #include <linux/kernel.h> #include <linux/ctype.h> #include <linux/init.h> -#include <linux/module.h> #include <asm/smp.h> #include <asm/ipi.h> +#include <asm/genapic.h> -#if defined(CONFIG_ACPI) +#ifdef CONFIG_ACPI #include <acpi/acpi_bus.h> #endif /* which logical CPU number maps to which CPU (physical APIC ID) */ -u8 x86_cpu_to_apicid[NR_CPUS] __read_mostly = { [0 ... NR_CPUS-1] = BAD_APICID }; +u8 x86_cpu_to_apicid[NR_CPUS] __read_mostly + = { [0 ... NR_CPUS-1] = BAD_APICID }; EXPORT_SYMBOL(x86_cpu_to_apicid); -u8 x86_cpu_to_log_apicid[NR_CPUS] = { [0 ... NR_CPUS-1] = BAD_APICID }; -extern struct genapic apic_cluster; -extern struct genapic apic_flat; -extern struct genapic apic_physflat; +u8 x86_cpu_to_log_apicid[NR_CPUS] = { [0 ... NR_CPUS-1] = BAD_APICID }; -struct genapic *genapic = &apic_flat; -struct genapic *genapic_force; +struct genapic __read_mostly *genapic = &apic_flat; /* * Check the APIC IDs in bios_cpu_apicid and choose the APIC mode. */ -void __init clustered_apic_check(void) +void __init setup_apic_routing(void) { - long i; - u8 clusters, max_cluster; - u8 id; - u8 cluster_cnt[NUM_APIC_CLUSTERS]; - int max_apic = 0; - - /* genapic selection can be forced because of certain quirks. - */ - if (genapic_force) { - genapic = genapic_force; - goto print; - } - -#if defined(CONFIG_ACPI) +#ifdef CONFIG_ACPI /* - * Some x86_64 machines use physical APIC mode regardless of how many - * procs/clusters are present (x86_64 ES7000 is an example). + * Quirk: some x86_64 machines can only use physical APIC mode + * regardless of how many processors are present (x86_64 ES7000 + * is an example). */ - if (acpi_gbl_FADT.header.revision > FADT2_REVISION_ID) - if (acpi_gbl_FADT.flags & ACPI_FADT_APIC_PHYSICAL) { - genapic = &apic_cluster; - goto print; - } -#endif - - memset(cluster_cnt, 0, sizeof(cluster_cnt)); - for (i = 0; i < NR_CPUS; i++) { - id = bios_cpu_apicid[i]; - if (id == BAD_APICID) - continue; - if (id > max_apic) - max_apic = id; - cluster_cnt[APIC_CLUSTERID(id)]++; - } - - /* Don't use clustered mode on AMD platforms. */ - if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD) { + if (acpi_gbl_FADT.header.revision > FADT2_REVISION_ID && + (acpi_gbl_FADT.flags & ACPI_FADT_APIC_PHYSICAL)) genapic = &apic_physflat; -#ifndef CONFIG_HOTPLUG_CPU - /* In the CPU hotplug case we cannot use broadcast mode - because that opens a race when a CPU is removed. - Stay at physflat mode in this case. - It is bad to do this unconditionally though. Once - we have ACPI platform support for CPU hotplug - we should detect hotplug capablity from ACPI tables and - only do this when really needed. -AK */ - if (max_apic <= 8) - genapic = &apic_flat; + else #endif - goto print; - } - clusters = 0; - max_cluster = 0; - - for (i = 0; i < NUM_APIC_CLUSTERS; i++) { - if (cluster_cnt[i] > 0) { - ++clusters; - if (cluster_cnt[i] > max_cluster) - max_cluster = cluster_cnt[i]; - } - } - - /* - * If we have clusters <= 1 and CPUs <= 8 in cluster 0, then flat mode, - * else if max_cluster <= 4 and cluster_cnt[15] == 0, clustered logical - * else physical mode. - * (We don't use lowest priority delivery + HW APIC IRQ steering, so - * can ignore the clustered logical case and go straight to physical.) - */ - if (clusters <= 1 && max_cluster <= 8 && cluster_cnt[0] == max_cluster) { -#ifdef CONFIG_HOTPLUG_CPU - /* Don't use APIC shortcuts in CPU hotplug to avoid races */ - genapic = &apic_physflat; -#else + if (cpus_weight(cpu_possible_map) <= 8) genapic = &apic_flat; -#endif - } else - genapic = &apic_cluster; + else + genapic = &apic_physflat; -print: printk(KERN_INFO "Setting APIC routing to %s\n", genapic->name); } -/* Same for both flat and clustered. */ +/* Same for both flat and physical. */ void send_IPI_self(int vector) { diff --git a/arch/x86_64/kernel/genapic_cluster.c b/arch/x86_64/kernel/genapic_cluster.c deleted file mode 100644 index 73d7630..0000000 --- a/arch/x86_64/kernel/genapic_cluster.c +++ /dev/null @@ -1,137 +0,0 @@ -/* - * Copyright 2004 James Cleverdon, IBM. - * Subject to the GNU Public License, v.2 - * - * Clustered APIC subarch code. Up to 255 CPUs, physical delivery. - * (A more realistic maximum is around 230 CPUs.) - * - * Hacked for x86-64 by James Cleverdon from i386 architecture code by - * Martin Bligh, Andi Kleen, James Bottomley, John Stultz, and - * James Cleverdon. - */ -#include <linux/threads.h> -#include <linux/cpumask.h> -#include <linux/string.h> -#include <linux/kernel.h> -#include <linux/ctype.h> -#include <linux/init.h> -#include <asm/smp.h> -#include <asm/ipi.h> - - -/* - * Set up the logical destination ID. - * - * Intel recommends to set DFR, LDR and TPR before enabling - * an APIC. See e.g. "AP-388 82489DX User's Manual" (Intel - * document number 292116). So here it goes... - */ -static void cluster_init_apic_ldr(void) -{ - unsigned long val, id; - long i, count; - u8 lid; - u8 my_id = hard_smp_processor_id(); - u8 my_cluster = APIC_CLUSTER(my_id); - - /* Create logical APIC IDs by counting CPUs already in cluster. */ - for (count = 0, i = NR_CPUS; --i >= 0; ) { - lid = x86_cpu_to_log_apicid[i]; - if (lid != BAD_APICID && APIC_CLUSTER(lid) == my_cluster) - ++count; - } - /* - * We only have a 4 wide bitmap in cluster mode. There's no way - * to get above 60 CPUs and still give each one it's own bit. - * But, we're using physical IRQ delivery, so we don't care. - * Use bit 3 for the 4th through Nth CPU in each cluster. - */ - if (count >= XAPIC_DEST_CPUS_SHIFT) - count = 3; - id = my_cluster | (1UL << count); - x86_cpu_to_log_apicid[smp_processor_id()] = id; - apic_write(APIC_DFR, APIC_DFR_CLUSTER); - val = apic_read(APIC_LDR) & ~APIC_LDR_MASK; - val |= SET_APIC_LOGICAL_ID(id); - apic_write(APIC_LDR, val); -} - -/* Start with all IRQs pointing to boot CPU. IRQ balancing will shift them. */ - -static cpumask_t cluster_target_cpus(void) -{ - return cpumask_of_cpu(0); -} - -static cpumask_t cluster_vector_allocation_domain(int cpu) -{ - cpumask_t domain = CPU_MASK_NONE; - cpu_set(cpu, domain); - return domain; -} - -static void cluster_send_IPI_mask(cpumask_t mask, int vector) -{ - send_IPI_mask_sequence(mask, vector); -} - -static void cluster_send_IPI_allbutself(int vector) -{ - cpumask_t mask = cpu_online_map; - - cpu_clear(smp_processor_id(), mask); - - if (!cpus_empty(mask)) - cluster_send_IPI_mask(mask, vector); -} - -static void cluster_send_IPI_all(int vector) -{ - cluster_send_IPI_mask(cpu_online_map, vector); -} - -static int cluster_apic_id_registered(void) -{ - return 1; -} - -static unsigned int cluster_cpu_mask_to_apicid(cpumask_t cpumask) -{ - int cpu; - - /* - * We're using fixed IRQ delivery, can only return one phys APIC ID. - * May as well be the first. - */ - cpu = first_cpu(cpumask); - if ((unsigned)cpu < NR_CPUS) - return x86_cpu_to_apicid[cpu]; - else - return BAD_APICID; -} - -/* cpuid returns the value latched in the HW at reset, not the APIC ID - * register's value. For any box whose BIOS changes APIC IDs, like - * clustered APIC systems, we must use hard_smp_processor_id. - * - * See Intel's IA-32 SW Dev's Manual Vol2 under CPUID. - */ -static unsigned int phys_pkg_id(int index_msb) -{ - return hard_smp_processor_id() >> index_msb; -} - -struct genapic apic_cluster = { - .name = "clustered", - .int_delivery_mode = dest_Fixed, - .int_dest_mode = (APIC_DEST_PHYSICAL != 0), - .target_cpus = cluster_target_cpus, - .vector_allocation_domain = cluster_vector_allocation_domain, - .apic_id_registered = cluster_apic_id_registered, - .init_apic_ldr = cluster_init_apic_ldr, - .send_IPI_all = cluster_send_IPI_all, - .send_IPI_allbutself = cluster_send_IPI_allbutself, - .send_IPI_mask = cluster_send_IPI_mask, - .cpu_mask_to_apicid = cluster_cpu_mask_to_apicid, - .phys_pkg_id = phys_pkg_id, -}; diff --git a/arch/x86_64/kernel/genapic_flat.c b/arch/x86_64/kernel/genapic_flat.c index 7c01db8..ecb01ee 100644 --- a/arch/x86_64/kernel/genapic_flat.c +++ b/arch/x86_64/kernel/genapic_flat.c @@ -8,6 +8,7 @@ * Martin Bligh, Andi Kleen, James Bottomley, John Stultz, and * James Cleverdon. */ +#include <linux/errno.h> #include <linux/threads.h> #include <linux/cpumask.h> #include <linux/string.h> @@ -16,6 +17,7 @@ #include <linux/init.h> #include <asm/smp.h> #include <asm/ipi.h> +#include <asm/genapic.h> static cpumask_t flat_target_cpus(void) { @@ -60,31 +62,10 @@ static void flat_init_apic_ldr(void) static void flat_send_IPI_mask(cpumask_t cpumask, int vector) { unsigned long mask = cpus_addr(cpumask)[0]; - unsigned long cfg; unsigned long flags; local_irq_save(flags); - - /* - * Wait for idle. - */ - apic_wait_icr_idle(); - - /* - * prepare target chip field - */ - cfg = __prepare_ICR2(mask); - apic_write(APIC_ICR2, cfg); - - /* - * program the ICR - */ - cfg = __prepare_ICR(0, vector, APIC_DEST_LOGICAL); - - /* - * Send the IPI. The write to APIC_ICR fires this off. - */ - apic_write(APIC_ICR, cfg); + __send_IPI_dest_field(mask, vector, APIC_DEST_LOGICAL); local_irq_restore(flags); } diff --git a/arch/x86_64/kernel/head.S b/arch/x86_64/kernel/head.S index 598a4d0..1fab487 100644 --- a/arch/x86_64/kernel/head.S +++ b/arch/x86_64/kernel/head.S @@ -5,6 +5,7 @@ * Copyright (C) 2000 Pavel Machek <pavel@suse.cz> * Copyright (C) 2000 Karsten Keil <kkeil@suse.de> * Copyright (C) 2001,2002 Andi Kleen <ak@suse.de> + * Copyright (C) 2005 Eric Biederman <ebiederm@xmission.com> */ @@ -13,97 +14,131 @@ #include <linux/init.h> #include <asm/desc.h> #include <asm/segment.h> +#include <asm/pgtable.h> #include <asm/page.h> #include <asm/msr.h> #include <asm/cache.h> - + /* we are not able to switch in one step to the final KERNEL ADRESS SPACE - * because we need identity-mapped pages on setup so define __START_KERNEL to - * 0x100000 for this stage - * + * because we need identity-mapped pages. + * */ .text .section .bootstrap.text - .code32 - .globl startup_32 -/* %bx: 1 if coming from smp trampoline on secondary cpu */ -startup_32: - + .code64 + .globl startup_64 +startup_64: + /* - * At this point the CPU runs in 32bit protected mode (CS.D = 1) with - * paging disabled and the point of this file is to switch to 64bit - * long mode with a kernel mapping for kerneland to jump into the - * kernel virtual addresses. - * There is no stack until we set one up. + * At this point the CPU runs in 64bit mode CS.L = 1 CS.D = 1, + * and someone has loaded an identity mapped page table + * for us. These identity mapped page tables map all of the + * kernel pages and possibly all of memory. + * + * %esi holds a physical pointer to real_mode_data. + * + * We come here either directly from a 64bit bootloader, or from + * arch/x86_64/boot/compressed/head.S. + * + * We only come here initially at boot nothing else comes here. + * + * Since we may be loaded at an address different from what we were + * compiled to run at we first fixup the physical addresses in our page + * tables and then reload them. */ - /* Initialize the %ds segment register */ - movl $__KERNEL_DS,%eax - movl %eax,%ds - - /* Load new GDT with the 64bit segments using 32bit descriptor */ - lgdt pGDT32 - __START_KERNEL_map - - /* If the CPU doesn't support CPUID this will double fault. - * Unfortunately it is hard to check for CPUID without a stack. + /* Compute the delta between the address I am compiled to run at and the + * address I am actually running at. */ - - /* Check if extended functions are implemented */ - movl $0x80000000, %eax - cpuid - cmpl $0x80000000, %eax - jbe no_long_mode - /* Check if long mode is implemented */ - mov $0x80000001, %eax - cpuid - btl $29, %edx - jnc no_long_mode - - /* - * Prepare for entering 64bits mode + leaq _text(%rip), %rbp + subq $_text - __START_KERNEL_map, %rbp + + /* Is the address not 2M aligned? */ + movq %rbp, %rax + andl $~LARGE_PAGE_MASK, %eax + testl %eax, %eax + jnz bad_address + + /* Is the address too large? */ + leaq _text(%rip), %rdx + movq $PGDIR_SIZE, %rax + cmpq %rax, %rdx + jae bad_address + + /* Fixup the physical addresses in the page table */ + addq %rbp, init_level4_pgt + 0(%rip) + addq %rbp, init_level4_pgt + (258*8)(%rip) + addq %rbp, init_level4_pgt + (511*8)(%rip) + + addq %rbp, level3_ident_pgt + 0(%rip) + addq %rbp, level3_kernel_pgt + (510*8)(%rip) + + /* Add an Identity mapping if I am above 1G */ + leaq _text(%rip), %rdi + andq $LARGE_PAGE_MASK, %rdi + + movq %rdi, %rax + shrq $PUD_SHIFT, %rax + andq $(PTRS_PER_PUD - 1), %rax + jz ident_complete + + leaq (level2_spare_pgt - __START_KERNEL_map + _KERNPG_TABLE)(%rbp), %rdx + leaq level3_ident_pgt(%rip), %rbx + movq %rdx, 0(%rbx, %rax, 8) + + movq %rdi, %rax + shrq $PMD_SHIFT, %rax + andq $(PTRS_PER_PMD - 1), %rax + leaq __PAGE_KERNEL_LARGE_EXEC(%rdi), %rdx + leaq level2_spare_pgt(%rip), %rbx + movq %rdx, 0(%rbx, %rax, 8) +ident_complete: + + /* Fixup the kernel text+data virtual addresses + */ + leaq level2_kernel_pgt(%rip), %rdi + leaq 4096(%rdi), %r8 + /* See if it is a valid page table entry */ +1: testq $1, 0(%rdi) + jz 2f + addq %rbp, 0(%rdi) + /* Go to the next page */ +2: addq $8, %rdi + cmp %r8, %rdi + jne 1b + + /* Fixup phys_base */ + addq %rbp, phys_base(%rip) - /* Enable PAE mode */ - xorl %eax, %eax - btsl $5, %eax - movl %eax, %cr4 - - /* Setup early boot stage 4 level pagetables */ - movl $(boot_level4_pgt - __START_KERNEL_map), %eax - movl %eax, %cr3 - - /* Setup EFER (Extended Feature Enable Register) */ - movl $MSR_EFER, %ecx - rdmsr - - /* Enable Long Mode */ - btsl $_EFER_LME, %eax - - /* Make changes effective */ - wrmsr +#ifdef CONFIG_SMP + addq %rbp, trampoline_level4_pgt + 0(%rip) + addq %rbp, trampoline_level4_pgt + (511*8)(%rip) +#endif +#ifdef CONFIG_ACPI_SLEEP + addq %rbp, wakeup_level4_pgt + 0(%rip) + addq %rbp, wakeup_level4_pgt + (511*8)(%rip) +#endif - xorl %eax, %eax - btsl $31, %eax /* Enable paging and in turn activate Long Mode */ - btsl $0, %eax /* Enable protected mode */ - /* Make changes effective */ - movl %eax, %cr0 - /* - * At this point we're in long mode but in 32bit compatibility mode - * with EFER.LME = 1, CS.L = 0, CS.D = 1 (and in turn - * EFER.LMA = 1). Now we want to jump in 64bit mode, to do that we use - * the new gdt/idt that has __KERNEL_CS with CS.L = 1. + /* Due to ENTRY(), sometimes the empty space gets filled with + * zeros. Better take a jmp than relying on empty space being + * filled with 0x90 (nop) */ - ljmp $__KERNEL_CS, $(startup_64 - __START_KERNEL_map) - - .code64 - .org 0x100 - .globl startup_64 -startup_64: - /* We come here either from startup_32 - * or directly from a 64bit bootloader. - * Since we may have come directly from a bootloader we - * reload the page tables here. + jmp secondary_startup_64 +ENTRY(secondary_startup_64) + /* + * At this point the CPU runs in 64bit mode CS.L = 1 CS.D = 1, + * and someone has loaded a mapped page table. + * + * %esi holds a physical pointer to real_mode_data. + * + * We come here either from startup_64 (using physical addresses) + * or from trampoline.S (using virtual addresses). + * + * Using virtual addresses from trampoline.S removes the need + * to have any identity mapped pages in the kernel page table + * after the boot processor executes this code. */ /* Enable PAE mode and PGE */ @@ -113,9 +148,15 @@ startup_64: movq %rax, %cr4 /* Setup early boot stage 4 level pagetables. */ - movq $(boot_level4_pgt - __START_KERNEL_map), %rax + movq $(init_level4_pgt - __START_KERNEL_map), %rax + addq phys_base(%rip), %rax movq %rax, %cr3 + /* Ensure I am executing from virtual addresses */ + movq $1f, %rax + jmp *%rax +1: + /* Check if nx is implemented */ movl $0x80000001, %eax cpuid @@ -124,17 +165,11 @@ startup_64: /* Setup EFER (Extended Feature Enable Register) */ movl $MSR_EFER, %ecx rdmsr - - /* Enable System Call */ - btsl $_EFER_SCE, %eax - - /* No Execute supported? */ - btl $20,%edi + btsl $_EFER_SCE, %eax /* Enable System Call */ + btl $20,%edi /* No Execute supported? */ jnc 1f btsl $_EFER_NX, %eax -1: - /* Make changes effective */ - wrmsr +1: wrmsr /* Make changes effective */ /* Setup cr0 */ #define CR0_PM 1 /* protected mode */ @@ -161,7 +196,7 @@ startup_64: * addresses where we're currently running on. We have to do that here * because in 32bit we couldn't load a 64bit linear address. */ - lgdt cpu_gdt_descr + lgdt cpu_gdt_descr(%rip) /* set up data segments. actually 0 would do too */ movl $__KERNEL_DS,%eax @@ -212,6 +247,9 @@ initial_code: init_rsp: .quad init_thread_union+THREAD_SIZE-8 +bad_address: + jmp bad_address + ENTRY(early_idt_handler) cmpl $2,early_recursion_flag(%rip) jz 1f @@ -240,110 +278,66 @@ early_idt_msg: early_idt_ripmsg: .asciz "RIP %s\n" -.code32 -ENTRY(no_long_mode) - /* This isn't an x86-64 CPU so hang */ -1: - jmp 1b - -.org 0xf00 - .globl pGDT32 -pGDT32: - .word gdt_end-cpu_gdt_table-1 - .long cpu_gdt_table-__START_KERNEL_map - -.org 0xf10 -ljumpvector: - .long startup_64-__START_KERNEL_map - .word __KERNEL_CS +.balign PAGE_SIZE -ENTRY(stext) -ENTRY(_stext) - - $page = 0 #define NEXT_PAGE(name) \ - $page = $page + 1; \ - .org $page * 0x1000; \ - phys_/**/name = $page * 0x1000 + __PHYSICAL_START; \ + .balign PAGE_SIZE; \ ENTRY(name) +/* Automate the creation of 1 to 1 mapping pmd entries */ +#define PMDS(START, PERM, COUNT) \ + i = 0 ; \ + .rept (COUNT) ; \ + .quad (START) + (i << 21) + (PERM) ; \ + i = i + 1 ; \ + .endr + + /* + * This default setting generates an ident mapping at address 0x100000 + * and a mapping for the kernel that precisely maps virtual address + * 0xffffffff80000000 to physical address 0x000000. (always using + * 2Mbyte large pages provided by PAE mode) + */ NEXT_PAGE(init_level4_pgt) - /* This gets initialized in x86_64_start_kernel */ - .fill 512,8,0 + .quad level3_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE + .fill 257,8,0 + .quad level3_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE + .fill 252,8,0 + /* (2^48-(2*1024*1024*1024))/(2^39) = 511 */ + .quad level3_kernel_pgt - __START_KERNEL_map + _PAGE_TABLE NEXT_PAGE(level3_ident_pgt) - .quad phys_level2_ident_pgt | 0x007 + .quad level2_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE .fill 511,8,0 NEXT_PAGE(level3_kernel_pgt) .fill 510,8,0 /* (2^48-(2*1024*1024*1024)-((2^39)*511))/(2^30) = 510 */ - .quad phys_level2_kernel_pgt | 0x007 + .quad level2_kernel_pgt - __START_KERNEL_map + _KERNPG_TABLE .fill 1,8,0 NEXT_PAGE(level2_ident_pgt) - /* 40MB for bootup. */ - i = 0 - .rept 20 - .quad i << 21 | 0x083 - i = i + 1 - .endr - /* Temporary mappings for the super early allocator in arch/x86_64/mm/init.c */ - .globl temp_boot_pmds -temp_boot_pmds: - .fill 492,8,0 - + /* Since I easily can, map the first 1G. + * Don't set NX because code runs from these pages. + */ + PMDS(0x0000000000000000, __PAGE_KERNEL_LARGE_EXEC, PTRS_PER_PMD) + NEXT_PAGE(level2_kernel_pgt) /* 40MB kernel mapping. The kernel code cannot be bigger than that. When you change this change KERNEL_TEXT_SIZE in page.h too. */ /* (2^48-(2*1024*1024*1024)-((2^39)*511)-((2^30)*510)) = 0 */ - i = 0 - .rept 20 - .quad i << 21 | 0x183 - i = i + 1 - .endr + PMDS(0x0000000000000000, __PAGE_KERNEL_LARGE_EXEC|_PAGE_GLOBAL, + KERNEL_TEXT_SIZE/PMD_SIZE) /* Module mapping starts here */ - .fill 492,8,0 + .fill (PTRS_PER_PMD - (KERNEL_TEXT_SIZE/PMD_SIZE)),8,0 -NEXT_PAGE(level3_physmem_pgt) - .quad phys_level2_kernel_pgt | 0x007 /* so that __va works even before pagetable_init */ - .fill 511,8,0 +NEXT_PAGE(level2_spare_pgt) + .fill 512,8,0 +#undef PMDS #undef NEXT_PAGE .data - -#ifdef CONFIG_ACPI_SLEEP - .align PAGE_SIZE -ENTRY(wakeup_level4_pgt) - .quad phys_level3_ident_pgt | 0x007 - .fill 255,8,0 - .quad phys_level3_physmem_pgt | 0x007 - .fill 254,8,0 - /* (2^48-(2*1024*1024*1024))/(2^39) = 511 */ - .quad phys_level3_kernel_pgt | 0x007 -#endif - -#ifndef CONFIG_HOTPLUG_CPU - __INITDATA -#endif - /* - * This default setting generates an ident mapping at address 0x100000 - * and a mapping for the kernel that precisely maps virtual address - * 0xffffffff80000000 to physical address 0x000000. (always using - * 2Mbyte large pages provided by PAE mode) - */ - .align PAGE_SIZE -ENTRY(boot_level4_pgt) - .quad phys_level3_ident_pgt | 0x007 - .fill 255,8,0 - .quad phys_level3_physmem_pgt | 0x007 - .fill 254,8,0 - /* (2^48-(2*1024*1024*1024))/(2^39) = 511 */ - .quad phys_level3_kernel_pgt | 0x007 - - .data - .align 16 .globl cpu_gdt_descr cpu_gdt_descr: @@ -357,6 +351,10 @@ gdt: .endr #endif +ENTRY(phys_base) + /* This must match the first entry in level2_kernel_pgt */ + .quad 0x0000000000000000 + /* We need valid kernel segments for data and code in long mode too * IRET will check the segment types kkeil 2000/10/28 * Also sysret mandates a special GDT layout @@ -370,13 +368,13 @@ gdt: ENTRY(cpu_gdt_table) .quad 0x0000000000000000 /* NULL descriptor */ + .quad 0x00cf9b000000ffff /* __KERNEL32_CS */ + .quad 0x00af9b000000ffff /* __KERNEL_CS */ + .quad 0x00cf93000000ffff /* __KERNEL_DS */ + .quad 0x00cffb000000ffff /* __USER32_CS */ + .quad 0x00cff3000000ffff /* __USER_DS, __USER32_DS */ + .quad 0x00affb000000ffff /* __USER_CS */ .quad 0x0 /* unused */ - .quad 0x00af9a000000ffff /* __KERNEL_CS */ - .quad 0x00cf92000000ffff /* __KERNEL_DS */ - .quad 0x00cffa000000ffff /* __USER32_CS */ - .quad 0x00cff2000000ffff /* __USER_DS, __USER32_DS */ - .quad 0x00affa000000ffff /* __USER_CS */ - .quad 0x00cf9a000000ffff /* __KERNEL32_CS */ .quad 0,0 /* TSS */ .quad 0,0 /* LDT */ .quad 0,0,0 /* three TLS descriptors */ diff --git a/arch/x86_64/kernel/head64.c b/arch/x86_64/kernel/head64.c index 5f197b0..213d90e 100644 --- a/arch/x86_64/kernel/head64.c +++ b/arch/x86_64/kernel/head64.c @@ -18,8 +18,16 @@ #include <asm/setup.h> #include <asm/desc.h> #include <asm/pgtable.h> +#include <asm/tlbflush.h> #include <asm/sections.h> +static void __init zap_identity_mappings(void) +{ + pgd_t *pgd = pgd_offset_k(0UL); + pgd_clear(pgd); + __flush_tlb(); +} + /* Don't add a printk in there. printk relies on the PDA which is not initialized yet. */ static void __init clear_bss(void) @@ -29,25 +37,24 @@ static void __init clear_bss(void) } #define NEW_CL_POINTER 0x228 /* Relative to real mode data */ -#define OLD_CL_MAGIC_ADDR 0x90020 +#define OLD_CL_MAGIC_ADDR 0x20 #define OLD_CL_MAGIC 0xA33F -#define OLD_CL_BASE_ADDR 0x90000 -#define OLD_CL_OFFSET 0x90022 +#define OLD_CL_OFFSET 0x22 static void __init copy_bootdata(char *real_mode_data) { - int new_data; + unsigned long new_data; char * command_line; memcpy(x86_boot_params, real_mode_data, BOOT_PARAM_SIZE); - new_data = *(int *) (x86_boot_params + NEW_CL_POINTER); + new_data = *(u32 *) (x86_boot_params + NEW_CL_POINTER); if (!new_data) { - if (OLD_CL_MAGIC != * (u16 *) OLD_CL_MAGIC_ADDR) { + if (OLD_CL_MAGIC != *(u16 *)(real_mode_data + OLD_CL_MAGIC_ADDR)) { return; } - new_data = OLD_CL_BASE_ADDR + * (u16 *) OLD_CL_OFFSET; + new_data = __pa(real_mode_data) + *(u16 *)(real_mode_data + OLD_CL_OFFSET); } - command_line = (char *) ((u64)(new_data)); + command_line = __va(new_data); memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE); } @@ -55,26 +62,30 @@ void __init x86_64_start_kernel(char * real_mode_data) { int i; + /* + * Make sure kernel is aligned to 2MB address. Catching it at compile + * time is better. Change your config file and compile the kernel + * for a 2MB aligned address (CONFIG_PHYSICAL_START) + */ + BUILD_BUG_ON(CONFIG_PHYSICAL_START & (__KERNEL_ALIGN - 1)); + /* clear bss before set_intr_gate with early_idt_handler */ clear_bss(); + /* Make NULL pointers segfault */ + zap_identity_mappings(); + for (i = 0; i < IDT_ENTRIES; i++) set_intr_gate(i, early_idt_handler); asm volatile("lidt %0" :: "m" (idt_descr)); early_printk("Kernel alive\n"); - /* - * switch to init_level4_pgt from boot_level4_pgt - */ - memcpy(init_level4_pgt, boot_level4_pgt, PTRS_PER_PGD*sizeof(pgd_t)); - asm volatile("movq %0,%%cr3" :: "r" (__pa_symbol(&init_level4_pgt))); - for (i = 0; i < NR_CPUS; i++) cpu_pda(i) = &boot_cpu_pda[i]; pda_init(0); - copy_bootdata(real_mode_data); + copy_bootdata(__va(real_mode_data)); #ifdef CONFIG_SMP cpu_set(0, cpu_online_map); #endif diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c index b7d2b76..2a2df14 100644 --- a/arch/x86_64/kernel/io_apic.c +++ b/arch/x86_64/kernel/io_apic.c @@ -907,10 +907,6 @@ static void __init setup_ExtINT_IRQ0_pin(unsigned int apic, unsigned int pin, in enable_8259A_irq(0); } -void __init UNEXPECTED_IO_APIC(void) -{ -} - void __apicdebuginit print_IO_APIC(void) { int apic, i; @@ -946,40 +942,16 @@ void __apicdebuginit print_IO_APIC(void) printk(KERN_DEBUG "IO APIC #%d......\n", mp_ioapics[apic].mpc_apicid); printk(KERN_DEBUG ".... register #00: %08X\n", reg_00.raw); printk(KERN_DEBUG "....... : physical APIC id: %02X\n", reg_00.bits.ID); - if (reg_00.bits.__reserved_1 || reg_00.bits.__reserved_2) - UNEXPECTED_IO_APIC(); printk(KERN_DEBUG ".... register #01: %08X\n", *(int *)®_01); printk(KERN_DEBUG "....... : max redirection entries: %04X\n", reg_01.bits.entries); - if ( (reg_01.bits.entries != 0x0f) && /* older (Neptune) boards */ - (reg_01.bits.entries != 0x17) && /* typical ISA+PCI boards */ - (reg_01.bits.entries != 0x1b) && /* Compaq Proliant boards */ - (reg_01.bits.entries != 0x1f) && /* dual Xeon boards */ - (reg_01.bits.entries != 0x22) && /* bigger Xeon boards */ - (reg_01.bits.entries != 0x2E) && - (reg_01.bits.entries != 0x3F) && - (reg_01.bits.entries != 0x03) - ) - UNEXPECTED_IO_APIC(); printk(KERN_DEBUG "....... : PRQ implemented: %X\n", reg_01.bits.PRQ); printk(KERN_DEBUG "....... : IO APIC version: %04X\n", reg_01.bits.version); - if ( (reg_01.bits.version != 0x01) && /* 82489DX IO-APICs */ - (reg_01.bits.version != 0x02) && /* 82801BA IO-APICs (ICH2) */ - (reg_01.bits.version != 0x10) && /* oldest IO-APICs */ - (reg_01.bits.version != 0x11) && /* Pentium/Pro IO-APICs */ - (reg_01.bits.version != 0x13) && /* Xeon IO-APICs */ - (reg_01.bits.version != 0x20) /* Intel P64H (82806 AA) */ - ) - UNEXPECTED_IO_APIC(); - if (reg_01.bits.__reserved_1 || reg_01.bits.__reserved_2) - UNEXPECTED_IO_APIC(); if (reg_01.bits.version >= 0x10) { printk(KERN_DEBUG ".... register #02: %08X\n", reg_02.raw); printk(KERN_DEBUG "....... : arbitration: %02X\n", reg_02.bits.arbitration); - if (reg_02.bits.__reserved_1 || reg_02.bits.__reserved_2) - UNEXPECTED_IO_APIC(); } printk(KERN_DEBUG ".... IRQ redirection table:\n"); @@ -1407,8 +1379,7 @@ static void irq_complete_move(unsigned int irq) vector = ~get_irq_regs()->orig_rax; me = smp_processor_id(); - if ((vector == cfg->vector) && - cpu_isset(smp_processor_id(), cfg->domain)) { + if ((vector == cfg->vector) && cpu_isset(me, cfg->domain)) { cpumask_t cleanup_mask; cpus_and(cleanup_mask, cfg->old_domain, cpu_online_map); diff --git a/arch/x86_64/kernel/ioport.c b/arch/x86_64/kernel/ioport.c index 745b1f0..387d347 100644 --- a/arch/x86_64/kernel/ioport.c +++ b/arch/x86_64/kernel/ioport.c @@ -16,6 +16,7 @@ #include <linux/stddef.h> #include <linux/slab.h> #include <linux/thread_info.h> +#include <linux/syscalls.h> /* Set EXTENT bits starting at BASE in BITMAP to value TURN_ON. */ static void set_bitmap(unsigned long *bitmap, unsigned int base, unsigned int extent, int new_value) diff --git a/arch/x86_64/kernel/machine_kexec.c b/arch/x86_64/kernel/machine_kexec.c index 0497e3b..a8bb33c 100644 --- a/arch/x86_64/kernel/machine_kexec.c +++ b/arch/x86_64/kernel/machine_kexec.c @@ -191,19 +191,19 @@ NORET_TYPE void machine_kexec(struct kimage *image) page_list[PA_CONTROL_PAGE] = __pa(control_page); page_list[VA_CONTROL_PAGE] = (unsigned long)relocate_kernel; - page_list[PA_PGD] = __pa(kexec_pgd); + page_list[PA_PGD] = __pa_symbol(&kexec_pgd); page_list[VA_PGD] = (unsigned long)kexec_pgd; - page_list[PA_PUD_0] = __pa(kexec_pud0); + page_list[PA_PUD_0] = __pa_symbol(&kexec_pud0); page_list[VA_PUD_0] = (unsigned long)kexec_pud0; - page_list[PA_PMD_0] = __pa(kexec_pmd0); + page_list[PA_PMD_0] = __pa_symbol(&kexec_pmd0); page_list[VA_PMD_0] = (unsigned long)kexec_pmd0; - page_list[PA_PTE_0] = __pa(kexec_pte0); + page_list[PA_PTE_0] = __pa_symbol(&kexec_pte0); page_list[VA_PTE_0] = (unsigned long)kexec_pte0; - page_list[PA_PUD_1] = __pa(kexec_pud1); + page_list[PA_PUD_1] = __pa_symbol(&kexec_pud1); page_list[VA_PUD_1] = (unsigned long)kexec_pud1; - page_list[PA_PMD_1] = __pa(kexec_pmd1); + page_list[PA_PMD_1] = __pa_symbol(&kexec_pmd1); page_list[VA_PMD_1] = (unsigned long)kexec_pmd1; - page_list[PA_PTE_1] = __pa(kexec_pte1); + page_list[PA_PTE_1] = __pa_symbol(&kexec_pte1); page_list[VA_PTE_1] = (unsigned long)kexec_pte1; page_list[PA_TABLE_PAGE] = diff --git a/arch/x86_64/kernel/mce.c b/arch/x86_64/kernel/mce.c index 8011a8e..fa26726 100644 --- a/arch/x86_64/kernel/mce.c +++ b/arch/x86_64/kernel/mce.c @@ -323,10 +323,13 @@ void mce_log_therm_throt_event(unsigned int cpu, __u64 status) #endif /* CONFIG_X86_MCE_INTEL */ /* - * Periodic polling timer for "silent" machine check errors. + * Periodic polling timer for "silent" machine check errors. If the + * poller finds an MCE, poll 2x faster. When the poller finds no more + * errors, poll 2x slower (up to check_interval seconds). */ static int check_interval = 5 * 60; /* 5 minutes */ +static int next_interval; /* in jiffies */ static void mcheck_timer(struct work_struct *work); static DECLARE_DELAYED_WORK(mcheck_work, mcheck_timer); @@ -339,7 +342,6 @@ static void mcheck_check_cpu(void *info) static void mcheck_timer(struct work_struct *work) { on_each_cpu(mcheck_check_cpu, NULL, 1, 1); - schedule_delayed_work(&mcheck_work, check_interval * HZ); /* * It's ok to read stale data here for notify_user and @@ -349,17 +351,30 @@ static void mcheck_timer(struct work_struct *work) * writes. */ if (notify_user && console_logged) { + static unsigned long last_print; + unsigned long now = jiffies; + + /* if we logged an MCE, reduce the polling interval */ + next_interval = max(next_interval/2, HZ/100); notify_user = 0; clear_bit(0, &console_logged); - printk(KERN_INFO "Machine check events logged\n"); + if (time_after_eq(now, last_print + (check_interval*HZ))) { + last_print = now; + printk(KERN_INFO "Machine check events logged\n"); + } + } else { + next_interval = min(next_interval*2, check_interval*HZ); } + + schedule_delayed_work(&mcheck_work, next_interval); } static __init int periodic_mcheck_init(void) { - if (check_interval) - schedule_delayed_work(&mcheck_work, check_interval*HZ); + next_interval = check_interval * HZ; + if (next_interval) + schedule_delayed_work(&mcheck_work, next_interval); return 0; } __initcall(periodic_mcheck_init); @@ -597,12 +612,13 @@ static int mce_resume(struct sys_device *dev) /* Reinit MCEs after user configuration changes */ static void mce_restart(void) { - if (check_interval) + if (next_interval) cancel_delayed_work(&mcheck_work); /* Timer race is harmless here */ on_each_cpu(mce_init, NULL, 1, 1); - if (check_interval) - schedule_delayed_work(&mcheck_work, check_interval*HZ); + next_interval = check_interval * HZ; + if (next_interval) + schedule_delayed_work(&mcheck_work, next_interval); } static struct sysdev_class mce_sysclass = { diff --git a/arch/x86_64/kernel/mpparse.c b/arch/x86_64/kernel/mpparse.c index 455aa0b..d0dc489 100644 --- a/arch/x86_64/kernel/mpparse.c +++ b/arch/x86_64/kernel/mpparse.c @@ -300,7 +300,7 @@ static int __init smp_read_mpc(struct mp_config_table *mpc) } } } - clustered_apic_check(); + setup_apic_routing(); if (!num_processors) printk(KERN_ERR "MPTABLE: no processors registered!\n"); return num_processors; diff --git a/arch/x86_64/kernel/nmi.c b/arch/x86_64/kernel/nmi.c index dfab9f1..6cd2b30 100644 --- a/arch/x86_64/kernel/nmi.c +++ b/arch/x86_64/kernel/nmi.c @@ -27,28 +27,11 @@ #include <asm/proto.h> #include <asm/kdebug.h> #include <asm/mce.h> -#include <asm/intel_arch_perfmon.h> int unknown_nmi_panic; int nmi_watchdog_enabled; int panic_on_unrecovered_nmi; -/* perfctr_nmi_owner tracks the ownership of the perfctr registers: - * evtsel_nmi_owner tracks the ownership of the event selection - * - different performance counters/ event selection may be reserved for - * different subsystems this reservation system just tries to coordinate - * things a little - */ - -/* this number is calculated from Intel's MSR_P4_CRU_ESCR5 register and it's - * offset from MSR_P4_BSU_ESCR0. It will be the max for all platforms (for now) - */ -#define NMI_MAX_COUNTER_BITS 66 -#define NMI_MAX_COUNTER_LONGS BITS_TO_LONGS(NMI_MAX_COUNTER_BITS) - -static DEFINE_PER_CPU(unsigned, perfctr_nmi_owner[NMI_MAX_COUNTER_LONGS]); -static DEFINE_PER_CPU(unsigned, evntsel_nmi_owner[NMI_MAX_COUNTER_LONGS]); - static cpumask_t backtrace_mask = CPU_MASK_NONE; /* nmi_active: @@ -63,191 +46,11 @@ int panic_on_timeout; unsigned int nmi_watchdog = NMI_DEFAULT; static unsigned int nmi_hz = HZ; -struct nmi_watchdog_ctlblk { - int enabled; - u64 check_bit; - unsigned int cccr_msr; - unsigned int perfctr_msr; /* the MSR to reset in NMI handler */ - unsigned int evntsel_msr; /* the MSR to select the events to handle */ -}; -static DEFINE_PER_CPU(struct nmi_watchdog_ctlblk, nmi_watchdog_ctlblk); +static DEFINE_PER_CPU(short, wd_enabled); /* local prototypes */ static int unknown_nmi_panic_callback(struct pt_regs *regs, int cpu); -/* converts an msr to an appropriate reservation bit */ -static inline unsigned int nmi_perfctr_msr_to_bit(unsigned int msr) -{ - /* returns the bit offset of the performance counter register */ - switch (boot_cpu_data.x86_vendor) { - case X86_VENDOR_AMD: - return (msr - MSR_K7_PERFCTR0); - case X86_VENDOR_INTEL: - if (cpu_has(&boot_cpu_data, X86_FEATURE_ARCH_PERFMON)) - return (msr - MSR_ARCH_PERFMON_PERFCTR0); - else - return (msr - MSR_P4_BPU_PERFCTR0); - } - return 0; -} - -/* converts an msr to an appropriate reservation bit */ -static inline unsigned int nmi_evntsel_msr_to_bit(unsigned int msr) -{ - /* returns the bit offset of the event selection register */ - switch (boot_cpu_data.x86_vendor) { - case X86_VENDOR_AMD: - return (msr - MSR_K7_EVNTSEL0); - case X86_VENDOR_INTEL: - if (cpu_has(&boot_cpu_data, X86_FEATURE_ARCH_PERFMON)) - return (msr - MSR_ARCH_PERFMON_EVENTSEL0); - else - return (msr - MSR_P4_BSU_ESCR0); - } - return 0; -} - -/* checks for a bit availability (hack for oprofile) */ -int avail_to_resrv_perfctr_nmi_bit(unsigned int counter) -{ - int cpu; - BUG_ON(counter > NMI_MAX_COUNTER_BITS); - for_each_possible_cpu (cpu) { - if (test_bit(counter, &per_cpu(perfctr_nmi_owner, cpu))) - return 0; - } - return 1; -} - -/* checks the an msr for availability */ -int avail_to_resrv_perfctr_nmi(unsigned int msr) -{ - unsigned int counter; - int cpu; - - counter = nmi_perfctr_msr_to_bit(msr); - BUG_ON(counter > NMI_MAX_COUNTER_BITS); - - for_each_possible_cpu (cpu) { - if (test_bit(counter, &per_cpu(perfctr_nmi_owner, cpu))) - return 0; - } - return 1; -} - -static int __reserve_perfctr_nmi(int cpu, unsigned int msr) -{ - unsigned int counter; - if (cpu < 0) - cpu = smp_processor_id(); - - counter = nmi_perfctr_msr_to_bit(msr); - BUG_ON(counter > NMI_MAX_COUNTER_BITS); - - if (!test_and_set_bit(counter, &per_cpu(perfctr_nmi_owner, cpu))) - return 1; - return 0; -} - -static void __release_perfctr_nmi(int cpu, unsigned int msr) -{ - unsigned int counter; - if (cpu < 0) - cpu = smp_processor_id(); - - counter = nmi_perfctr_msr_to_bit(msr); - BUG_ON(counter > NMI_MAX_COUNTER_BITS); - - clear_bit(counter, &per_cpu(perfctr_nmi_owner, cpu)); -} - -int reserve_perfctr_nmi(unsigned int msr) -{ - int cpu, i; - for_each_possible_cpu (cpu) { - if (!__reserve_perfctr_nmi(cpu, msr)) { - for_each_possible_cpu (i) { - if (i >= cpu) - break; - __release_perfctr_nmi(i, msr); - } - return 0; - } - } - return 1; -} - -void release_perfctr_nmi(unsigned int msr) -{ - int cpu; - for_each_possible_cpu (cpu) - __release_perfctr_nmi(cpu, msr); -} - -int __reserve_evntsel_nmi(int cpu, unsigned int msr) -{ - unsigned int counter; - if (cpu < 0) - cpu = smp_processor_id(); - - counter = nmi_evntsel_msr_to_bit(msr); - BUG_ON(counter > NMI_MAX_COUNTER_BITS); - - if (!test_and_set_bit(counter, &per_cpu(evntsel_nmi_owner, cpu)[0])) - return 1; - return 0; -} - -static void __release_evntsel_nmi(int cpu, unsigned int msr) -{ - unsigned int counter; - if (cpu < 0) - cpu = smp_processor_id(); - - counter = nmi_evntsel_msr_to_bit(msr); - BUG_ON(counter > NMI_MAX_COUNTER_BITS); - - clear_bit(counter, &per_cpu(evntsel_nmi_owner, cpu)[0]); -} - -int reserve_evntsel_nmi(unsigned int msr) -{ - int cpu, i; - for_each_possible_cpu (cpu) { - if (!__reserve_evntsel_nmi(cpu, msr)) { - for_each_possible_cpu (i) { - if (i >= cpu) - break; - __release_evntsel_nmi(i, msr); - } - return 0; - } - } - return 1; -} - -void release_evntsel_nmi(unsigned int msr) -{ - int cpu; - for_each_possible_cpu (cpu) { - __release_evntsel_nmi(cpu, msr); - } -} - -static __cpuinit inline int nmi_known_cpu(void) -{ - switch (boot_cpu_data.x86_vendor) { - case X86_VENDOR_AMD: - return boot_cpu_data.x86 == 15 || boot_cpu_data.x86 == 16; - case X86_VENDOR_INTEL: - if (cpu_has(&boot_cpu_data, X86_FEATURE_ARCH_PERFMON)) - return 1; - else - return (boot_cpu_data.x86 == 15); - } - return 0; -} - /* Run after command line and cpu_init init, but before all other checks */ void nmi_watchdog_default(void) { @@ -277,23 +80,6 @@ static __init void nmi_cpu_busy(void *data) } #endif -static unsigned int adjust_for_32bit_ctr(unsigned int hz) -{ - unsigned int retval = hz; - - /* - * On Intel CPUs with ARCH_PERFMON only 32 bits in the counter - * are writable, with higher bits sign extending from bit 31. - * So, we can only program the counter with 31 bit values and - * 32nd bit should be 1, for 33.. to be 1. - * Find the appropriate nmi_hz - */ - if ((((u64)cpu_khz * 1000) / retval) > 0x7fffffffULL) { - retval = ((u64)cpu_khz * 1000) / 0x7fffffffUL + 1; - } - return retval; -} - int __init check_nmi_watchdog (void) { int *counts; @@ -322,14 +108,14 @@ int __init check_nmi_watchdog (void) mdelay((20*1000)/nmi_hz); // wait 20 ticks for_each_online_cpu(cpu) { - if (!per_cpu(nmi_watchdog_ctlblk, cpu).enabled) + if (!per_cpu(wd_enabled, cpu)) continue; if (cpu_pda(cpu)->__nmi_count - counts[cpu] <= 5) { printk("CPU#%d: NMI appears to be stuck (%d->%d)!\n", cpu, counts[cpu], cpu_pda(cpu)->__nmi_count); - per_cpu(nmi_watchdog_ctlblk, cpu).enabled = 0; + per_cpu(wd_enabled, cpu) = 0; atomic_dec(&nmi_active); } } @@ -344,13 +130,8 @@ int __init check_nmi_watchdog (void) /* now that we know it works we can reduce NMI frequency to something more reasonable; makes a difference in some configs */ - if (nmi_watchdog == NMI_LOCAL_APIC) { - struct nmi_watchdog_ctlblk *wd = &__get_cpu_var(nmi_watchdog_ctlblk); - - nmi_hz = 1; - if (wd->perfctr_msr == MSR_ARCH_PERFMON_PERFCTR0) - nmi_hz = adjust_for_32bit_ctr(nmi_hz); - } + if (nmi_watchdog == NMI_LOCAL_APIC) + nmi_hz = lapic_adjust_nmi_hz(1); kfree(counts); return 0; @@ -379,57 +160,6 @@ int __init setup_nmi_watchdog(char *str) __setup("nmi_watchdog=", setup_nmi_watchdog); -static void disable_lapic_nmi_watchdog(void) -{ - BUG_ON(nmi_watchdog != NMI_LOCAL_APIC); - - if (atomic_read(&nmi_active) <= 0) - return; - - on_each_cpu(stop_apic_nmi_watchdog, NULL, 0, 1); - - BUG_ON(atomic_read(&nmi_active) != 0); -} - -static void enable_lapic_nmi_watchdog(void) -{ - BUG_ON(nmi_watchdog != NMI_LOCAL_APIC); - - /* are we already enabled */ - if (atomic_read(&nmi_active) != 0) - return; - - /* are we lapic aware */ - if (nmi_known_cpu() <= 0) - return; - - on_each_cpu(setup_apic_nmi_watchdog, NULL, 0, 1); - touch_nmi_watchdog(); -} - -void disable_timer_nmi_watchdog(void) -{ - BUG_ON(nmi_watchdog != NMI_IO_APIC); - - if (atomic_read(&nmi_active) <= 0) - return; - - disable_irq(0); - on_each_cpu(stop_apic_nmi_watchdog, NULL, 0, 1); - - BUG_ON(atomic_read(&nmi_active) != 0); -} - -void enable_timer_nmi_watchdog(void) -{ - BUG_ON(nmi_watchdog != NMI_IO_APIC); - - if (atomic_read(&nmi_active) == 0) { - touch_nmi_watchdog(); - on_each_cpu(setup_apic_nmi_watchdog, NULL, 0, 1); - enable_irq(0); - } -} static void __acpi_nmi_disable(void *__unused) { @@ -515,275 +245,9 @@ late_initcall(init_lapic_nmi_sysfs); #endif /* CONFIG_PM */ -/* - * Activate the NMI watchdog via the local APIC. - * Original code written by Keith Owens. - */ - -/* Note that these events don't tick when the CPU idles. This means - the frequency varies with CPU load. */ - -#define K7_EVNTSEL_ENABLE (1 << 22) -#define K7_EVNTSEL_INT (1 << 20) -#define K7_EVNTSEL_OS (1 << 17) -#define K7_EVNTSEL_USR (1 << 16) -#define K7_EVENT_CYCLES_PROCESSOR_IS_RUNNING 0x76 -#define K7_NMI_EVENT K7_EVENT_CYCLES_PROCESSOR_IS_RUNNING - -static int setup_k7_watchdog(void) -{ - unsigned int perfctr_msr, evntsel_msr; - unsigned int evntsel; - struct nmi_watchdog_ctlblk *wd = &__get_cpu_var(nmi_watchdog_ctlblk); - - perfctr_msr = MSR_K7_PERFCTR0; - evntsel_msr = MSR_K7_EVNTSEL0; - if (!__reserve_perfctr_nmi(-1, perfctr_msr)) - goto fail; - - if (!__reserve_evntsel_nmi(-1, evntsel_msr)) - goto fail1; - - /* Simulator may not support it */ - if (checking_wrmsrl(evntsel_msr, 0UL)) - goto fail2; - wrmsrl(perfctr_msr, 0UL); - - evntsel = K7_EVNTSEL_INT - | K7_EVNTSEL_OS - | K7_EVNTSEL_USR - | K7_NMI_EVENT; - - /* setup the timer */ - wrmsr(evntsel_msr, evntsel, 0); - wrmsrl(perfctr_msr, -((u64)cpu_khz * 1000 / nmi_hz)); - apic_write(APIC_LVTPC, APIC_DM_NMI); - evntsel |= K7_EVNTSEL_ENABLE; - wrmsr(evntsel_msr, evntsel, 0); - - wd->perfctr_msr = perfctr_msr; - wd->evntsel_msr = evntsel_msr; - wd->cccr_msr = 0; //unused - wd->check_bit = 1ULL<<63; - return 1; -fail2: - __release_evntsel_nmi(-1, evntsel_msr); -fail1: - __release_perfctr_nmi(-1, perfctr_msr); -fail: - return 0; -} - -static void stop_k7_watchdog(void) -{ - struct nmi_watchdog_ctlblk *wd = &__get_cpu_var(nmi_watchdog_ctlblk); - - wrmsr(wd->evntsel_msr, 0, 0); - - __release_evntsel_nmi(-1, wd->evntsel_msr); - __release_perfctr_nmi(-1, wd->perfctr_msr); -} - -/* Note that these events don't tick when the CPU idles. This means - the frequency varies with CPU load. */ - -#define MSR_P4_MISC_ENABLE_PERF_AVAIL (1<<7) -#define P4_ESCR_EVENT_SELECT(N) ((N)<<25) -#define P4_ESCR_OS (1<<3) -#define P4_ESCR_USR (1<<2) -#define P4_CCCR_OVF_PMI0 (1<<26) -#define P4_CCCR_OVF_PMI1 (1<<27) -#define P4_CCCR_THRESHOLD(N) ((N)<<20) -#define P4_CCCR_COMPLEMENT (1<<19) -#define P4_CCCR_COMPARE (1<<18) -#define P4_CCCR_REQUIRED (3<<16) -#define P4_CCCR_ESCR_SELECT(N) ((N)<<13) -#define P4_CCCR_ENABLE (1<<12) -#define P4_CCCR_OVF (1<<31) -/* Set up IQ_COUNTER0 to behave like a clock, by having IQ_CCCR0 filter - CRU_ESCR0 (with any non-null event selector) through a complemented - max threshold. [IA32-Vol3, Section 14.9.9] */ - -static int setup_p4_watchdog(void) -{ - unsigned int perfctr_msr, evntsel_msr, cccr_msr; - unsigned int evntsel, cccr_val; - unsigned int misc_enable, dummy; - unsigned int ht_num; - struct nmi_watchdog_ctlblk *wd = &__get_cpu_var(nmi_watchdog_ctlblk); - - rdmsr(MSR_IA32_MISC_ENABLE, misc_enable, dummy); - if (!(misc_enable & MSR_P4_MISC_ENABLE_PERF_AVAIL)) - return 0; - -#ifdef CONFIG_SMP - /* detect which hyperthread we are on */ - if (smp_num_siblings == 2) { - unsigned int ebx, apicid; - - ebx = cpuid_ebx(1); - apicid = (ebx >> 24) & 0xff; - ht_num = apicid & 1; - } else -#endif - ht_num = 0; - - /* performance counters are shared resources - * assign each hyperthread its own set - * (re-use the ESCR0 register, seems safe - * and keeps the cccr_val the same) - */ - if (!ht_num) { - /* logical cpu 0 */ - perfctr_msr = MSR_P4_IQ_PERFCTR0; - evntsel_msr = MSR_P4_CRU_ESCR0; - cccr_msr = MSR_P4_IQ_CCCR0; - cccr_val = P4_CCCR_OVF_PMI0 | P4_CCCR_ESCR_SELECT(4); - } else { - /* logical cpu 1 */ - perfctr_msr = MSR_P4_IQ_PERFCTR1; - evntsel_msr = MSR_P4_CRU_ESCR0; - cccr_msr = MSR_P4_IQ_CCCR1; - cccr_val = P4_CCCR_OVF_PMI1 | P4_CCCR_ESCR_SELECT(4); - } - - if (!__reserve_perfctr_nmi(-1, perfctr_msr)) - goto fail; - - if (!__reserve_evntsel_nmi(-1, evntsel_msr)) - goto fail1; - - evntsel = P4_ESCR_EVENT_SELECT(0x3F) - | P4_ESCR_OS - | P4_ESCR_USR; - - cccr_val |= P4_CCCR_THRESHOLD(15) - | P4_CCCR_COMPLEMENT - | P4_CCCR_COMPARE - | P4_CCCR_REQUIRED; - - wrmsr(evntsel_msr, evntsel, 0); - wrmsr(cccr_msr, cccr_val, 0); - wrmsrl(perfctr_msr, -((u64)cpu_khz * 1000 / nmi_hz)); - apic_write(APIC_LVTPC, APIC_DM_NMI); - cccr_val |= P4_CCCR_ENABLE; - wrmsr(cccr_msr, cccr_val, 0); - - wd->perfctr_msr = perfctr_msr; - wd->evntsel_msr = evntsel_msr; - wd->cccr_msr = cccr_msr; - wd->check_bit = 1ULL<<39; - return 1; -fail1: - __release_perfctr_nmi(-1, perfctr_msr); -fail: - return 0; -} - -static void stop_p4_watchdog(void) -{ - struct nmi_watchdog_ctlblk *wd = &__get_cpu_var(nmi_watchdog_ctlblk); - - wrmsr(wd->cccr_msr, 0, 0); - wrmsr(wd->evntsel_msr, 0, 0); - - __release_evntsel_nmi(-1, wd->evntsel_msr); - __release_perfctr_nmi(-1, wd->perfctr_msr); -} - -#define ARCH_PERFMON_NMI_EVENT_SEL ARCH_PERFMON_UNHALTED_CORE_CYCLES_SEL -#define ARCH_PERFMON_NMI_EVENT_UMASK ARCH_PERFMON_UNHALTED_CORE_CYCLES_UMASK - -static int setup_intel_arch_watchdog(void) -{ - unsigned int ebx; - union cpuid10_eax eax; - unsigned int unused; - unsigned int perfctr_msr, evntsel_msr; - unsigned int evntsel; - struct nmi_watchdog_ctlblk *wd = &__get_cpu_var(nmi_watchdog_ctlblk); - - /* - * Check whether the Architectural PerfMon supports - * Unhalted Core Cycles Event or not. - * NOTE: Corresponding bit = 0 in ebx indicates event present. - */ - cpuid(10, &(eax.full), &ebx, &unused, &unused); - if ((eax.split.mask_length < (ARCH_PERFMON_UNHALTED_CORE_CYCLES_INDEX+1)) || - (ebx & ARCH_PERFMON_UNHALTED_CORE_CYCLES_PRESENT)) - goto fail; - - perfctr_msr = MSR_ARCH_PERFMON_PERFCTR0; - evntsel_msr = MSR_ARCH_PERFMON_EVENTSEL0; - - if (!__reserve_perfctr_nmi(-1, perfctr_msr)) - goto fail; - - if (!__reserve_evntsel_nmi(-1, evntsel_msr)) - goto fail1; - - wrmsrl(perfctr_msr, 0UL); - - evntsel = ARCH_PERFMON_EVENTSEL_INT - | ARCH_PERFMON_EVENTSEL_OS - | ARCH_PERFMON_EVENTSEL_USR - | ARCH_PERFMON_NMI_EVENT_SEL - | ARCH_PERFMON_NMI_EVENT_UMASK; - - /* setup the timer */ - wrmsr(evntsel_msr, evntsel, 0); - - nmi_hz = adjust_for_32bit_ctr(nmi_hz); - wrmsr(perfctr_msr, (u32)(-((u64)cpu_khz * 1000 / nmi_hz)), 0); - - apic_write(APIC_LVTPC, APIC_DM_NMI); - evntsel |= ARCH_PERFMON_EVENTSEL0_ENABLE; - wrmsr(evntsel_msr, evntsel, 0); - - wd->perfctr_msr = perfctr_msr; - wd->evntsel_msr = evntsel_msr; - wd->cccr_msr = 0; //unused - wd->check_bit = 1ULL << (eax.split.bit_width - 1); - return 1; -fail1: - __release_perfctr_nmi(-1, perfctr_msr); -fail: - return 0; -} - -static void stop_intel_arch_watchdog(void) -{ - unsigned int ebx; - union cpuid10_eax eax; - unsigned int unused; - struct nmi_watchdog_ctlblk *wd = &__get_cpu_var(nmi_watchdog_ctlblk); - - /* - * Check whether the Architectural PerfMon supports - * Unhalted Core Cycles Event or not. - * NOTE: Corresponding bit = 0 in ebx indicates event present. - */ - cpuid(10, &(eax.full), &ebx, &unused, &unused); - if ((eax.split.mask_length < (ARCH_PERFMON_UNHALTED_CORE_CYCLES_INDEX+1)) || - (ebx & ARCH_PERFMON_UNHALTED_CORE_CYCLES_PRESENT)) - return; - - wrmsr(wd->evntsel_msr, 0, 0); - - __release_evntsel_nmi(-1, wd->evntsel_msr); - __release_perfctr_nmi(-1, wd->perfctr_msr); -} - void setup_apic_nmi_watchdog(void *unused) { - struct nmi_watchdog_ctlblk *wd = &__get_cpu_var(nmi_watchdog_ctlblk); - - /* only support LOCAL and IO APICs for now */ - if ((nmi_watchdog != NMI_LOCAL_APIC) && - (nmi_watchdog != NMI_IO_APIC)) - return; - - if (wd->enabled == 1) + if (__get_cpu_var(wd_enabled) == 1) return; /* cheap hack to support suspend/resume */ @@ -791,62 +255,31 @@ void setup_apic_nmi_watchdog(void *unused) if ((smp_processor_id() != 0) && (atomic_read(&nmi_active) <= 0)) return; - if (nmi_watchdog == NMI_LOCAL_APIC) { - switch (boot_cpu_data.x86_vendor) { - case X86_VENDOR_AMD: - if (strstr(boot_cpu_data.x86_model_id, "Screwdriver")) - return; - if (!setup_k7_watchdog()) - return; - break; - case X86_VENDOR_INTEL: - if (cpu_has(&boot_cpu_data, X86_FEATURE_ARCH_PERFMON)) { - if (!setup_intel_arch_watchdog()) - return; - break; - } - if (!setup_p4_watchdog()) - return; - break; - default: + switch (nmi_watchdog) { + case NMI_LOCAL_APIC: + __get_cpu_var(wd_enabled) = 1; + if (lapic_watchdog_init(nmi_hz) < 0) { + __get_cpu_var(wd_enabled) = 0; return; } + /* FALL THROUGH */ + case NMI_IO_APIC: + __get_cpu_var(wd_enabled) = 1; + atomic_inc(&nmi_active); } - wd->enabled = 1; - atomic_inc(&nmi_active); } void stop_apic_nmi_watchdog(void *unused) { - struct nmi_watchdog_ctlblk *wd = &__get_cpu_var(nmi_watchdog_ctlblk); - /* only support LOCAL and IO APICs for now */ if ((nmi_watchdog != NMI_LOCAL_APIC) && (nmi_watchdog != NMI_IO_APIC)) return; - - if (wd->enabled == 0) + if (__get_cpu_var(wd_enabled) == 0) return; - - if (nmi_watchdog == NMI_LOCAL_APIC) { - switch (boot_cpu_data.x86_vendor) { - case X86_VENDOR_AMD: - if (strstr(boot_cpu_data.x86_model_id, "Screwdriver")) - return; - stop_k7_watchdog(); - break; - case X86_VENDOR_INTEL: - if (cpu_has(&boot_cpu_data, X86_FEATURE_ARCH_PERFMON)) { - stop_intel_arch_watchdog(); - break; - } - stop_p4_watchdog(); - break; - default: - return; - } - } - wd->enabled = 0; + if (nmi_watchdog == NMI_LOCAL_APIC) + lapic_watchdog_stop(); + __get_cpu_var(wd_enabled) = 0; atomic_dec(&nmi_active); } @@ -885,9 +318,7 @@ int __kprobes nmi_watchdog_tick(struct pt_regs * regs, unsigned reason) int sum; int touched = 0; int cpu = smp_processor_id(); - struct nmi_watchdog_ctlblk *wd = &__get_cpu_var(nmi_watchdog_ctlblk); - u64 dummy; - int rc=0; + int rc = 0; /* check for other users first */ if (notify_die(DIE_NMI, "nmi", regs, reason, 2, SIGINT) @@ -934,55 +365,20 @@ int __kprobes nmi_watchdog_tick(struct pt_regs * regs, unsigned reason) } /* see if the nmi watchdog went off */ - if (wd->enabled) { - if (nmi_watchdog == NMI_LOCAL_APIC) { - rdmsrl(wd->perfctr_msr, dummy); - if (dummy & wd->check_bit){ - /* this wasn't a watchdog timer interrupt */ - goto done; - } - - /* only Intel uses the cccr msr */ - if (wd->cccr_msr != 0) { - /* - * P4 quirks: - * - An overflown perfctr will assert its interrupt - * until the OVF flag in its CCCR is cleared. - * - LVTPC is masked on interrupt and must be - * unmasked by the LVTPC handler. - */ - rdmsrl(wd->cccr_msr, dummy); - dummy &= ~P4_CCCR_OVF; - wrmsrl(wd->cccr_msr, dummy); - apic_write(APIC_LVTPC, APIC_DM_NMI); - /* start the cycle over again */ - wrmsrl(wd->perfctr_msr, - -((u64)cpu_khz * 1000 / nmi_hz)); - } else if (wd->perfctr_msr == MSR_ARCH_PERFMON_PERFCTR0) { - /* - * ArchPerfom/Core Duo needs to re-unmask - * the apic vector - */ - apic_write(APIC_LVTPC, APIC_DM_NMI); - /* ARCH_PERFMON has 32 bit counter writes */ - wrmsr(wd->perfctr_msr, - (u32)(-((u64)cpu_khz * 1000 / nmi_hz)), 0); - } else { - /* start the cycle over again */ - wrmsrl(wd->perfctr_msr, - -((u64)cpu_khz * 1000 / nmi_hz)); - } - rc = 1; - } else if (nmi_watchdog == NMI_IO_APIC) { - /* don't know how to accurately check for this. - * just assume it was a watchdog timer interrupt - * This matches the old behaviour. - */ - rc = 1; - } else - printk(KERN_WARNING "Unknown enabled NMI hardware?!\n"); + if (!__get_cpu_var(wd_enabled)) + return rc; + switch (nmi_watchdog) { + case NMI_LOCAL_APIC: + rc |= lapic_wd_event(nmi_hz); + break; + case NMI_IO_APIC: + /* don't know how to accurately check for this. + * just assume it was a watchdog timer interrupt + * This matches the old behaviour. + */ + rc = 1; + break; } -done: return rc; } @@ -1067,12 +463,4 @@ void __trigger_all_cpu_backtrace(void) EXPORT_SYMBOL(nmi_active); EXPORT_SYMBOL(nmi_watchdog); -EXPORT_SYMBOL(avail_to_resrv_perfctr_nmi); -EXPORT_SYMBOL(avail_to_resrv_perfctr_nmi_bit); -EXPORT_SYMBOL(reserve_perfctr_nmi); -EXPORT_SYMBOL(release_perfctr_nmi); -EXPORT_SYMBOL(reserve_evntsel_nmi); -EXPORT_SYMBOL(release_evntsel_nmi); -EXPORT_SYMBOL(disable_timer_nmi_watchdog); -EXPORT_SYMBOL(enable_timer_nmi_watchdog); EXPORT_SYMBOL(touch_nmi_watchdog); diff --git a/arch/x86_64/kernel/pci-calgary.c b/arch/x86_64/kernel/pci-calgary.c index 04480c3..5bd20b5 100644 --- a/arch/x86_64/kernel/pci-calgary.c +++ b/arch/x86_64/kernel/pci-calgary.c @@ -507,7 +507,7 @@ error: return ret; } -static struct dma_mapping_ops calgary_dma_ops = { +static const struct dma_mapping_ops calgary_dma_ops = { .alloc_coherent = calgary_alloc_coherent, .map_single = calgary_map_single, .unmap_single = calgary_unmap_single, diff --git a/arch/x86_64/kernel/pci-gart.c b/arch/x86_64/kernel/pci-gart.c index 0bae862..0a762e1 100644 --- a/arch/x86_64/kernel/pci-gart.c +++ b/arch/x86_64/kernel/pci-gart.c @@ -556,7 +556,7 @@ static __init int init_k8_gatt(struct agp_kern_info *info) extern int agp_amd64_init(void); -static struct dma_mapping_ops gart_dma_ops = { +static const struct dma_mapping_ops gart_dma_ops = { .mapping_error = NULL, .map_single = gart_map_single, .map_simple = gart_map_simple, diff --git a/arch/x86_64/kernel/pci-nommu.c b/arch/x86_64/kernel/pci-nommu.c index df09ab0..6dade0c 100644 --- a/arch/x86_64/kernel/pci-nommu.c +++ b/arch/x86_64/kernel/pci-nommu.c @@ -79,7 +79,7 @@ void nommu_unmap_sg(struct device *dev, struct scatterlist *sg, { } -struct dma_mapping_ops nommu_dma_ops = { +const struct dma_mapping_ops nommu_dma_ops = { .map_single = nommu_map_single, .unmap_single = nommu_unmap_single, .map_sg = nommu_map_sg, diff --git a/arch/x86_64/kernel/pci-swiotlb.c b/arch/x86_64/kernel/pci-swiotlb.c index eb18be5..4b4569a 100644 --- a/arch/x86_64/kernel/pci-swiotlb.c +++ b/arch/x86_64/kernel/pci-swiotlb.c @@ -12,7 +12,7 @@ int swiotlb __read_mostly; EXPORT_SYMBOL(swiotlb); -struct dma_mapping_ops swiotlb_dma_ops = { +const struct dma_mapping_ops swiotlb_dma_ops = { .mapping_error = swiotlb_dma_mapping_error, .alloc_coherent = swiotlb_alloc_coherent, .free_coherent = swiotlb_free_coherent, diff --git a/arch/x86_64/kernel/process.c b/arch/x86_64/kernel/process.c index d8d5ccc..4f21765 100644 --- a/arch/x86_64/kernel/process.c +++ b/arch/x86_64/kernel/process.c @@ -288,16 +288,18 @@ void __cpuinit select_idle_routine(const struct cpuinfo_x86 *c) static int __init idle_setup (char *str) { - if (!strncmp(str, "poll", 4)) { + if (!strcmp(str, "poll")) { printk("using polling idle threads.\n"); pm_idle = poll_idle; - } + } else if (!strcmp(str, "mwait")) + force_mwait = 1; + else + return -1; boot_option_idle_override = 1; - return 1; + return 0; } - -__setup("idle=", idle_setup); +early_param("idle", idle_setup); /* Prints also some state that isn't saved in the pt_regs */ void __show_regs(struct pt_regs * regs) diff --git a/arch/x86_64/kernel/setup.c b/arch/x86_64/kernel/setup.c index 3d98b69..db30b5b 100644 --- a/arch/x86_64/kernel/setup.c +++ b/arch/x86_64/kernel/setup.c @@ -79,6 +79,8 @@ int bootloader_type; unsigned long saved_video_mode; +int force_mwait __cpuinitdata; + /* * Early DMI memory */ @@ -205,10 +207,10 @@ static void discover_ebda(void) * there is a real-mode segmented pointer pointing to the * 4K EBDA area at 0x40E */ - ebda_addr = *(unsigned short *)EBDA_ADDR_POINTER; + ebda_addr = *(unsigned short *)__va(EBDA_ADDR_POINTER); ebda_addr <<= 4; - ebda_size = *(unsigned short *)(unsigned long)ebda_addr; + ebda_size = *(unsigned short *)__va(ebda_addr); /* Round EBDA up to pages */ if (ebda_size == 0) @@ -243,11 +245,12 @@ void __init setup_arch(char **cmdline_p) init_mm.end_code = (unsigned long) &_etext; init_mm.end_data = (unsigned long) &_edata; init_mm.brk = (unsigned long) &_end; + init_mm.pgd = __va(__pa_symbol(&init_level4_pgt)); - code_resource.start = virt_to_phys(&_text); - code_resource.end = virt_to_phys(&_etext)-1; - data_resource.start = virt_to_phys(&_etext); - data_resource.end = virt_to_phys(&_edata)-1; + code_resource.start = __pa_symbol(&_text); + code_resource.end = __pa_symbol(&_etext)-1; + data_resource.start = __pa_symbol(&_etext); + data_resource.end = __pa_symbol(&_edata)-1; early_identify_cpu(&boot_cpu_data); @@ -274,8 +277,6 @@ void __init setup_arch(char **cmdline_p) dmi_scan_machine(); - zap_low_mappings(0); - #ifdef CONFIG_ACPI /* * Initialize the ACPI boot-time table parser (gets the RSDP and SDT). @@ -329,15 +330,8 @@ void __init setup_arch(char **cmdline_p) #endif #ifdef CONFIG_SMP - /* - * But first pinch a few for the stack/trampoline stuff - * FIXME: Don't need the extra page at 4K, but need to fix - * trampoline before removing it. (see the GDT stuff) - */ - reserve_bootmem_generic(PAGE_SIZE, PAGE_SIZE); - /* Reserve SMP trampoline */ - reserve_bootmem_generic(SMP_TRAMPOLINE_BASE, PAGE_SIZE); + reserve_bootmem_generic(SMP_TRAMPOLINE_BASE, 2*PAGE_SIZE); #endif #ifdef CONFIG_ACPI_SLEEP @@ -612,6 +606,10 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c) /* RDTSC can be speculated around */ clear_bit(X86_FEATURE_SYNC_RDTSC, &c->x86_capability); + + /* Family 10 doesn't support C states in MWAIT so don't use it */ + if (c->x86 == 0x10 && !force_mwait) + clear_bit(X86_FEATURE_MWAIT, &c->x86_capability); } static void __cpuinit detect_ht(struct cpuinfo_x86 *c) @@ -987,9 +985,8 @@ static int show_cpuinfo(struct seq_file *m, void *v) "stc", "100mhzsteps", "hwpstate", - NULL, /* tsc invariant mapped to constant_tsc */ - NULL, - /* nothing */ /* constant_tsc - moved to flags */ + "", /* tsc invariant mapped to constant_tsc */ + /* nothing */ }; diff --git a/arch/x86_64/kernel/setup64.c b/arch/x86_64/kernel/setup64.c index 6a70b55..64379a8 100644 --- a/arch/x86_64/kernel/setup64.c +++ b/arch/x86_64/kernel/setup64.c @@ -103,9 +103,9 @@ void __init setup_per_cpu_areas(void) if (!NODE_DATA(cpu_to_node(i))) { printk("cpu with no node %d, num_online_nodes %d\n", i, num_online_nodes()); - ptr = alloc_bootmem(size); + ptr = alloc_bootmem_pages(size); } else { - ptr = alloc_bootmem_node(NODE_DATA(cpu_to_node(i)), size); + ptr = alloc_bootmem_pages_node(NODE_DATA(cpu_to_node(i)), size); } if (!ptr) panic("Cannot allocate cpu data for CPU %d\n", i); @@ -201,7 +201,6 @@ void __cpuinit cpu_init (void) /* CPU 0 is initialised in head64.c */ if (cpu != 0) { pda_init(cpu); - zap_low_mappings(cpu); } else estacks = boot_exception_stacks; diff --git a/arch/x86_64/kernel/signal.c b/arch/x86_64/kernel/signal.c index 49ec324..c819625 100644 --- a/arch/x86_64/kernel/signal.c +++ b/arch/x86_64/kernel/signal.c @@ -141,7 +141,7 @@ asmlinkage long sys_rt_sigreturn(struct pt_regs *regs) goto badframe; #ifdef DEBUG_SIG - printk("%d sigreturn rip:%lx rsp:%lx frame:%p rax:%lx\n",current->pid,regs.rip,regs.rsp,frame,eax); + printk("%d sigreturn rip:%lx rsp:%lx frame:%p rax:%lx\n",current->pid,regs->rip,regs->rsp,frame,eax); #endif if (do_sigaltstack(&frame->uc.uc_stack, NULL, regs->rsp) == -EFAULT) @@ -301,7 +301,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, if (test_thread_flag(TIF_SINGLESTEP)) ptrace_notify(SIGTRAP); #ifdef DEBUG_SIG - printk("SIG deliver (%s:%d): sp=%p pc=%p ra=%p\n", + printk("SIG deliver (%s:%d): sp=%p pc=%lx ra=%p\n", current->comm, current->pid, frame, regs->rip, frame->pretcode); #endif @@ -463,7 +463,7 @@ void do_notify_resume(struct pt_regs *regs, void *unused, __u32 thread_info_flags) { #ifdef DEBUG_SIG - printk("do_notify_resume flags:%x rip:%lx rsp:%lx caller:%lx pending:%lx\n", + printk("do_notify_resume flags:%x rip:%lx rsp:%lx caller:%p pending:%x\n", thread_info_flags, regs->rip, regs->rsp, __builtin_return_address(0),signal_pending(current)); #endif diff --git a/arch/x86_64/kernel/smp.c b/arch/x86_64/kernel/smp.c index af1ec4d..22abae4 100644 --- a/arch/x86_64/kernel/smp.c +++ b/arch/x86_64/kernel/smp.c @@ -76,7 +76,7 @@ static inline void leave_mm(int cpu) if (read_pda(mmu_state) == TLBSTATE_OK) BUG(); cpu_clear(cpu, read_pda(active_mm)->cpu_vm_mask); - load_cr3(swapper_pg_dir); + load_cr3(init_mm.pgd); } /* @@ -452,42 +452,34 @@ int smp_call_function (void (*func) (void *info), void *info, int nonatomic, } EXPORT_SYMBOL(smp_call_function); -void smp_stop_cpu(void) +static void stop_this_cpu(void *dummy) { - unsigned long flags; + local_irq_disable(); /* * Remove this CPU: */ cpu_clear(smp_processor_id(), cpu_online_map); - local_irq_save(flags); disable_local_APIC(); - local_irq_restore(flags); -} - -static void smp_really_stop_cpu(void *dummy) -{ - smp_stop_cpu(); for (;;) halt(); } void smp_send_stop(void) { - int nolock = 0; + int nolock; + unsigned long flags; + if (reboot_force) return; + /* Don't deadlock on the call lock in panic */ - if (!spin_trylock(&call_lock)) { - /* ignore locking because we have panicked anyways */ - nolock = 1; - } - __smp_call_function(smp_really_stop_cpu, NULL, 0, 0); + nolock = !spin_trylock(&call_lock); + local_irq_save(flags); + __smp_call_function(stop_this_cpu, NULL, 0, 0); if (!nolock) spin_unlock(&call_lock); - - local_irq_disable(); disable_local_APIC(); - local_irq_enable(); + local_irq_restore(flags); } /* diff --git a/arch/x86_64/kernel/smpboot.c b/arch/x86_64/kernel/smpboot.c index cd4643a..4d9dacf 100644 --- a/arch/x86_64/kernel/smpboot.c +++ b/arch/x86_64/kernel/smpboot.c @@ -60,7 +60,6 @@ #include <asm/irq.h> #include <asm/hw_irq.h> #include <asm/numa.h> -#include <asm/genapic.h> /* Number of siblings per CPU package */ int smp_num_siblings = 1; @@ -68,7 +67,6 @@ EXPORT_SYMBOL(smp_num_siblings); /* Last level cache ID of each logical CPU */ u8 cpu_llc_id[NR_CPUS] __cpuinitdata = {[0 ... NR_CPUS-1] = BAD_APICID}; -EXPORT_SYMBOL(cpu_llc_id); /* Bitmask of currently online CPUs */ cpumask_t cpu_online_map __read_mostly; @@ -392,7 +390,8 @@ static void inquire_remote_apic(int apicid) { unsigned i, regs[] = { APIC_ID >> 4, APIC_LVR >> 4, APIC_SPIV >> 4 }; char *names[] = { "ID", "VERSION", "SPIV" }; - int timeout, status; + int timeout; + unsigned int status; printk(KERN_INFO "Inquiring remote APIC #%d...\n", apicid); @@ -402,7 +401,9 @@ static void inquire_remote_apic(int apicid) /* * Wait for idle. */ - apic_wait_icr_idle(); + status = safe_apic_wait_icr_idle(); + if (status) + printk("a previous APIC delivery may have failed\n"); apic_write(APIC_ICR2, SET_APIC_DEST_FIELD(apicid)); apic_write(APIC_ICR, APIC_DM_REMRD | regs[i]); @@ -430,8 +431,8 @@ static void inquire_remote_apic(int apicid) */ static int __cpuinit wakeup_secondary_via_INIT(int phys_apicid, unsigned int start_rip) { - unsigned long send_status = 0, accept_status = 0; - int maxlvt, timeout, num_starts, j; + unsigned long send_status, accept_status = 0; + int maxlvt, num_starts, j; Dprintk("Asserting INIT.\n"); @@ -447,12 +448,7 @@ static int __cpuinit wakeup_secondary_via_INIT(int phys_apicid, unsigned int sta | APIC_DM_INIT); Dprintk("Waiting for send to finish...\n"); - timeout = 0; - do { - Dprintk("+"); - udelay(100); - send_status = apic_read(APIC_ICR) & APIC_ICR_BUSY; - } while (send_status && (timeout++ < 1000)); + send_status = safe_apic_wait_icr_idle(); mdelay(10); @@ -465,12 +461,7 @@ static int __cpuinit wakeup_secondary_via_INIT(int phys_apicid, unsigned int sta apic_write(APIC_ICR, APIC_INT_LEVELTRIG | APIC_DM_INIT); Dprintk("Waiting for send to finish...\n"); - timeout = 0; - do { - Dprintk("+"); - udelay(100); - send_status = apic_read(APIC_ICR) & APIC_ICR_BUSY; - } while (send_status && (timeout++ < 1000)); + send_status = safe_apic_wait_icr_idle(); mb(); atomic_set(&init_deasserted, 1); @@ -509,12 +500,7 @@ static int __cpuinit wakeup_secondary_via_INIT(int phys_apicid, unsigned int sta Dprintk("Startup point 1.\n"); Dprintk("Waiting for send to finish...\n"); - timeout = 0; - do { - Dprintk("+"); - udelay(100); - send_status = apic_read(APIC_ICR) & APIC_ICR_BUSY; - } while (send_status && (timeout++ < 1000)); + send_status = safe_apic_wait_icr_idle(); /* * Give the other CPU some time to accept the IPI. @@ -945,6 +931,12 @@ int __cpuinit __cpu_up(unsigned int cpu) return -ENOSYS; } + /* + * Save current MTRR state in case it was changed since early boot + * (e.g. by the ACPI SMI) to initialize new CPUs with MTRRs in sync: + */ + mtrr_save_state(); + per_cpu(cpu_state, cpu) = CPU_UP_PREPARE; /* Boot it! */ err = do_boot_cpu(cpu, apicid); @@ -965,13 +957,6 @@ int __cpuinit __cpu_up(unsigned int cpu) while (!cpu_isset(cpu, cpu_online_map)) cpu_relax(); - - if (num_online_cpus() > 8 && genapic == &apic_flat) { - printk(KERN_WARNING - "flat APIC routing can't be used with > 8 cpus\n"); - BUG(); - } - err = 0; return err; diff --git a/arch/x86_64/kernel/suspend.c b/arch/x86_64/kernel/suspend.c index 91f7e67..6a5a98f 100644 --- a/arch/x86_64/kernel/suspend.c +++ b/arch/x86_64/kernel/suspend.c @@ -12,6 +12,10 @@ #include <asm/proto.h> #include <asm/page.h> #include <asm/pgtable.h> +#include <asm/mtrr.h> + +/* References to section boundaries */ +extern const void __nosave_begin, __nosave_end; struct saved_context saved_context; @@ -33,7 +37,6 @@ void __save_processor_state(struct saved_context *ctxt) asm volatile ("str %0" : "=m" (ctxt->tr)); /* XMM0..XMM15 should be handled by kernel_fpu_begin(). */ - /* EFER should be constant for kernel version, no need to handle it. */ /* * segment registers */ @@ -46,10 +49,12 @@ void __save_processor_state(struct saved_context *ctxt) rdmsrl(MSR_FS_BASE, ctxt->fs_base); rdmsrl(MSR_GS_BASE, ctxt->gs_base); rdmsrl(MSR_KERNEL_GS_BASE, ctxt->gs_kernel_base); + mtrr_save_fixed_ranges(NULL); /* * control registers */ + rdmsrl(MSR_EFER, ctxt->efer); asm volatile ("movq %%cr0, %0" : "=r" (ctxt->cr0)); asm volatile ("movq %%cr2, %0" : "=r" (ctxt->cr2)); asm volatile ("movq %%cr3, %0" : "=r" (ctxt->cr3)); @@ -75,6 +80,7 @@ void __restore_processor_state(struct saved_context *ctxt) /* * control registers */ + wrmsrl(MSR_EFER, ctxt->efer); asm volatile ("movq %0, %%cr8" :: "r" (ctxt->cr8)); asm volatile ("movq %0, %%cr4" :: "r" (ctxt->cr4)); asm volatile ("movq %0, %%cr3" :: "r" (ctxt->cr3)); @@ -219,4 +225,15 @@ int swsusp_arch_resume(void) restore_image(); return 0; } + +/* + * pfn_is_nosave - check if given pfn is in the 'nosave' section + */ + +int pfn_is_nosave(unsigned long pfn) +{ + unsigned long nosave_begin_pfn = __pa_symbol(&__nosave_begin) >> PAGE_SHIFT; + unsigned long nosave_end_pfn = PAGE_ALIGN(__pa_symbol(&__nosave_end)) >> PAGE_SHIFT; + return (pfn >= nosave_begin_pfn) && (pfn < nosave_end_pfn); +} #endif /* CONFIG_SOFTWARE_SUSPEND */ diff --git a/arch/x86_64/kernel/suspend_asm.S b/arch/x86_64/kernel/suspend_asm.S index bfbe007..16d183f 100644 --- a/arch/x86_64/kernel/suspend_asm.S +++ b/arch/x86_64/kernel/suspend_asm.S @@ -71,9 +71,10 @@ loop: jmp loop done: /* go back to the original page tables */ - leaq init_level4_pgt(%rip), %rax - subq $__START_KERNEL_map, %rax - movq %rax, %cr3 + movq $(init_level4_pgt - __START_KERNEL_map), %rax + addq phys_base(%rip), %rax + movq %rax, %cr3 + /* Flush TLB, including "global" things (vmalloc) */ movq mmu_cr4_features(%rip), %rax movq %rax, %rdx diff --git a/arch/x86_64/kernel/syscall.c b/arch/x86_64/kernel/syscall.c index 213fd6a..63d592c 100644 --- a/arch/x86_64/kernel/syscall.c +++ b/arch/x86_64/kernel/syscall.c @@ -3,6 +3,7 @@ #include <linux/linkage.h> #include <linux/sys.h> #include <linux/cache.h> +#include <asm/asm-offsets.h> #define __NO_STUBS diff --git a/arch/x86_64/kernel/time.c b/arch/x86_64/kernel/time.c index 75d73a9..0652e17 100644 --- a/arch/x86_64/kernel/time.c +++ b/arch/x86_64/kernel/time.c @@ -39,13 +39,11 @@ #include <asm/proto.h> #include <asm/hpet.h> #include <asm/sections.h> -#include <linux/cpufreq.h> #include <linux/hpet.h> #include <asm/apic.h> #include <asm/hpet.h> - -extern void i8254_timer_resume(void); -extern int using_apic_timer; +#include <asm/mpspec.h> +#include <asm/nmi.h> static char *timename = NULL; @@ -252,6 +250,51 @@ static unsigned long get_cmos_time(void) return mktime(year, mon, day, hour, min, sec); } +/* calibrate_cpu is used on systems with fixed rate TSCs to determine + * processor frequency */ +#define TICK_COUNT 100000000 +static unsigned int __init tsc_calibrate_cpu_khz(void) +{ + int tsc_start, tsc_now; + int i, no_ctr_free; + unsigned long evntsel3 = 0, pmc3 = 0, pmc_now = 0; + unsigned long flags; + + for (i = 0; i < 4; i++) + if (avail_to_resrv_perfctr_nmi_bit(i)) + break; + no_ctr_free = (i == 4); + if (no_ctr_free) { + i = 3; + rdmsrl(MSR_K7_EVNTSEL3, evntsel3); + wrmsrl(MSR_K7_EVNTSEL3, 0); + rdmsrl(MSR_K7_PERFCTR3, pmc3); + } else { + reserve_perfctr_nmi(MSR_K7_PERFCTR0 + i); + reserve_evntsel_nmi(MSR_K7_EVNTSEL0 + i); + } + local_irq_save(flags); + /* start meauring cycles, incrementing from 0 */ + wrmsrl(MSR_K7_PERFCTR0 + i, 0); + wrmsrl(MSR_K7_EVNTSEL0 + i, 1 << 22 | 3 << 16 | 0x76); + rdtscl(tsc_start); + do { + rdmsrl(MSR_K7_PERFCTR0 + i, pmc_now); + tsc_now = get_cycles_sync(); + } while ((tsc_now - tsc_start) < TICK_COUNT); + + local_irq_restore(flags); + if (no_ctr_free) { + wrmsrl(MSR_K7_EVNTSEL3, 0); + wrmsrl(MSR_K7_PERFCTR3, pmc3); + wrmsrl(MSR_K7_EVNTSEL3, evntsel3); + } else { + release_perfctr_nmi(MSR_K7_PERFCTR0 + i); + release_evntsel_nmi(MSR_K7_EVNTSEL0 + i); + } + + return pmc_now * tsc_khz / (tsc_now - tsc_start); +} /* * pit_calibrate_tsc() uses the speaker output (channel 2) of @@ -285,7 +328,7 @@ static unsigned int __init pit_calibrate_tsc(void) #define PIT_MODE 0x43 #define PIT_CH0 0x40 -static void __init __pit_init(int val, u8 mode) +static void __pit_init(int val, u8 mode) { unsigned long flags; @@ -301,12 +344,12 @@ void __init pit_init(void) __pit_init(LATCH, 0x34); /* binary, mode 2, LSB/MSB, ch 0 */ } -void __init pit_stop_interrupt(void) +void pit_stop_interrupt(void) { __pit_init(0, 0x30); /* mode 0 */ } -void __init stop_timer_interrupt(void) +void stop_timer_interrupt(void) { char *name; if (hpet_address) { @@ -339,23 +382,29 @@ void __init time_init(void) if (hpet_use_timer) { /* set tick_nsec to use the proper rate for HPET */ tick_nsec = TICK_NSEC_HPET; - cpu_khz = hpet_calibrate_tsc(); + tsc_khz = hpet_calibrate_tsc(); timename = "HPET"; } else { pit_init(); - cpu_khz = pit_calibrate_tsc(); + tsc_khz = pit_calibrate_tsc(); timename = "PIT"; } + cpu_khz = tsc_khz; + if (cpu_has(&boot_cpu_data, X86_FEATURE_CONSTANT_TSC) && + boot_cpu_data.x86_vendor == X86_VENDOR_AMD && + boot_cpu_data.x86 == 16) + cpu_khz = tsc_calibrate_cpu_khz(); + if (unsynchronized_tsc()) - mark_tsc_unstable(); + mark_tsc_unstable("TSCs unsynchronized"); if (cpu_has(&boot_cpu_data, X86_FEATURE_RDTSCP)) vgetcpu_mode = VGETCPU_RDTSCP; else vgetcpu_mode = VGETCPU_LSL; - set_cyc2ns_scale(cpu_khz); + set_cyc2ns_scale(tsc_khz); printk(KERN_INFO "time.c: Detected %d.%03d MHz processor.\n", cpu_khz / 1000, cpu_khz % 1000); init_tsc_clocksource(); diff --git a/arch/x86_64/kernel/trampoline.S b/arch/x86_64/kernel/trampoline.S index c79b99a..e7e2764 100644 --- a/arch/x86_64/kernel/trampoline.S +++ b/arch/x86_64/kernel/trampoline.S @@ -3,6 +3,7 @@ * Trampoline.S Derived from Setup.S by Linus Torvalds * * 4 Jan 1997 Michael Chastain: changed to gnu as. + * 15 Sept 2005 Eric Biederman: 64bit PIC support * * Entry: CS:IP point to the start of our code, we are * in real mode with no stack, but the rest of the @@ -17,15 +18,20 @@ * and IP is zero. Thus, data addresses need to be absolute * (no relocation) and are taken with regard to r_base. * + * With the addition of trampoline_level4_pgt this code can + * now enter a 64bit kernel that lives at arbitrary 64bit + * physical addresses. + * * If you work on this file, check the object module with objdump * --full-contents --reloc to make sure there are no relocation - * entries. For the GDT entry we do hand relocation in smpboot.c - * because of 64bit linker limitations. + * entries. */ #include <linux/linkage.h> -#include <asm/segment.h> +#include <asm/pgtable.h> #include <asm/page.h> +#include <asm/msr.h> +#include <asm/segment.h> .data @@ -33,15 +39,33 @@ ENTRY(trampoline_data) r_base = . + cli # We should be safe anyway wbinvd mov %cs, %ax # Code and data in the same place mov %ax, %ds + mov %ax, %es + mov %ax, %ss - cli # We should be safe anyway movl $0xA5A5A5A5, trampoline_data - r_base # write marker for master knows we're running + # Setup stack + movw $(trampoline_stack_end - r_base), %sp + + call verify_cpu # Verify the cpu supports long mode + testl %eax, %eax # Check for return code + jnz no_longmode + + mov %cs, %ax + movzx %ax, %esi # Find the 32bit trampoline location + shll $4, %esi + + # Fixup the vectors + addl %esi, startup_32_vector - r_base + addl %esi, startup_64_vector - r_base + addl %esi, tgdt + 2 - r_base # Fixup the gdt pointer + /* * GDT tables in non default location kernel can be beyond 16MB and * lgdt will not be able to load the address as in real mode default @@ -49,23 +73,94 @@ r_base = . * to 32 bit. */ - lidtl idt_48 - r_base # load idt with 0, 0 - lgdtl gdt_48 - r_base # load gdt with whatever is appropriate + lidtl tidt - r_base # load idt with 0, 0 + lgdtl tgdt - r_base # load gdt with whatever is appropriate xor %ax, %ax inc %ax # protected mode (PE) bit lmsw %ax # into protected mode - # flaush prefetch and jump to startup_32 in arch/x86_64/kernel/head.S - ljmpl $__KERNEL32_CS, $(startup_32-__START_KERNEL_map) + + # flush prefetch and jump to startup_32 + ljmpl *(startup_32_vector - r_base) + + .code32 + .balign 4 +startup_32: + movl $__KERNEL_DS, %eax # Initialize the %ds segment register + movl %eax, %ds + + xorl %eax, %eax + btsl $5, %eax # Enable PAE mode + movl %eax, %cr4 + + # Setup trampoline 4 level pagetables + leal (trampoline_level4_pgt - r_base)(%esi), %eax + movl %eax, %cr3 + + movl $MSR_EFER, %ecx + movl $(1 << _EFER_LME), %eax # Enable Long Mode + xorl %edx, %edx + wrmsr + + xorl %eax, %eax + btsl $31, %eax # Enable paging and in turn activate Long Mode + btsl $0, %eax # Enable protected mode + movl %eax, %cr0 + + /* + * At this point we're in long mode but in 32bit compatibility mode + * with EFER.LME = 1, CS.L = 0, CS.D = 1 (and in turn + * EFER.LMA = 1). Now we want to jump in 64bit mode, to do that we use + * the new gdt/idt that has __KERNEL_CS with CS.L = 1. + */ + ljmp *(startup_64_vector - r_base)(%esi) + + .code64 + .balign 4 +startup_64: + # Now jump into the kernel using virtual addresses + movq $secondary_startup_64, %rax + jmp *%rax + + .code16 +no_longmode: + hlt + jmp no_longmode +#include "verify_cpu.S" # Careful these need to be in the same 64K segment as the above; -idt_48: +tidt: .word 0 # idt limit = 0 .word 0, 0 # idt base = 0L -gdt_48: - .short GDT_ENTRIES*8 - 1 # gdt limit - .long cpu_gdt_table-__START_KERNEL_map + # Duplicate the global descriptor table + # so the kernel can live anywhere + .balign 4 +tgdt: + .short tgdt_end - tgdt # gdt limit + .long tgdt - r_base + .short 0 + .quad 0x00cf9b000000ffff # __KERNEL32_CS + .quad 0x00af9b000000ffff # __KERNEL_CS + .quad 0x00cf93000000ffff # __KERNEL_DS +tgdt_end: + + .balign 4 +startup_32_vector: + .long startup_32 - r_base + .word __KERNEL32_CS, 0 + + .balign 4 +startup_64_vector: + .long startup_64 - r_base + .word __KERNEL_CS, 0 + +trampoline_stack: + .org 0x1000 +trampoline_stack_end: +ENTRY(trampoline_level4_pgt) + .quad level3_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE + .fill 510,8,0 + .quad level3_kernel_pgt - __START_KERNEL_map + _KERNPG_TABLE -.globl trampoline_end -trampoline_end: +ENTRY(trampoline_end) diff --git a/arch/x86_64/kernel/traps.c b/arch/x86_64/kernel/traps.c index 09d2e8a..d76fc32 100644 --- a/arch/x86_64/kernel/traps.c +++ b/arch/x86_64/kernel/traps.c @@ -426,8 +426,7 @@ void show_registers(struct pt_regs *regs) const int cpu = smp_processor_id(); struct task_struct *cur = cpu_pda(cpu)->pcurrent; - rsp = regs->rsp; - + rsp = regs->rsp; printk("CPU %d ", cpu); __show_regs(regs); printk("Process %s (pid: %d, threadinfo %p, task %p)\n", @@ -438,7 +437,6 @@ void show_registers(struct pt_regs *regs) * time of the fault.. */ if (in_kernel) { - printk("Stack: "); _show_stack(NULL, regs, (unsigned long*)rsp); @@ -581,10 +579,20 @@ static void __kprobes do_trap(int trapnr, int signr, char *str, { struct task_struct *tsk = current; - tsk->thread.error_code = error_code; - tsk->thread.trap_no = trapnr; - if (user_mode(regs)) { + /* + * We want error_code and trap_no set for userspace + * faults and kernelspace faults which result in + * die(), but not kernelspace faults which are fixed + * up. die() gives the process no chance to handle + * the signal and notice the kernel fault information, + * so that won't result in polluting the information + * about previously queued, but not yet delivered, + * faults. See also do_general_protection below. + */ + tsk->thread.error_code = error_code; + tsk->thread.trap_no = trapnr; + if (exception_trace && unhandled_signal(tsk, signr)) printk(KERN_INFO "%s[%d] trap %s rip:%lx rsp:%lx error:%lx\n", @@ -605,8 +613,11 @@ static void __kprobes do_trap(int trapnr, int signr, char *str, fixup = search_exception_tables(regs->rip); if (fixup) regs->rip = fixup->fixup; - else + else { + tsk->thread.error_code = error_code; + tsk->thread.trap_no = trapnr; die(str, regs, error_code); + } return; } } @@ -682,10 +693,10 @@ asmlinkage void __kprobes do_general_protection(struct pt_regs * regs, conditional_sti(regs); - tsk->thread.error_code = error_code; - tsk->thread.trap_no = 13; - if (user_mode(regs)) { + tsk->thread.error_code = error_code; + tsk->thread.trap_no = 13; + if (exception_trace && unhandled_signal(tsk, SIGSEGV)) printk(KERN_INFO "%s[%d] general protection rip:%lx rsp:%lx error:%lx\n", @@ -704,6 +715,9 @@ asmlinkage void __kprobes do_general_protection(struct pt_regs * regs, regs->rip = fixup->fixup; return; } + + tsk->thread.error_code = error_code; + tsk->thread.trap_no = 13; if (notify_die(DIE_GPF, "general protection fault", regs, error_code, 13, SIGSEGV) == NOTIFY_STOP) return; diff --git a/arch/x86_64/kernel/tsc.c b/arch/x86_64/kernel/tsc.c index 1a0edbb..48f9a8e 100644 --- a/arch/x86_64/kernel/tsc.c +++ b/arch/x86_64/kernel/tsc.c @@ -13,6 +13,8 @@ static int notsc __initdata = 0; unsigned int cpu_khz; /* TSC clocks / usec, not used here */ EXPORT_SYMBOL(cpu_khz); +unsigned int tsc_khz; +EXPORT_SYMBOL(tsc_khz); static unsigned int cyc2ns_scale __read_mostly; @@ -77,7 +79,7 @@ static void handle_cpufreq_delayed_get(struct work_struct *v) static unsigned int ref_freq = 0; static unsigned long loops_per_jiffy_ref = 0; -static unsigned long cpu_khz_ref = 0; +static unsigned long tsc_khz_ref = 0; static int time_cpufreq_notifier(struct notifier_block *nb, unsigned long val, void *data) @@ -99,7 +101,7 @@ static int time_cpufreq_notifier(struct notifier_block *nb, unsigned long val, if (!ref_freq) { ref_freq = freq->old; loops_per_jiffy_ref = *lpj; - cpu_khz_ref = cpu_khz; + tsc_khz_ref = tsc_khz; } if ((val == CPUFREQ_PRECHANGE && freq->old < freq->new) || (val == CPUFREQ_POSTCHANGE && freq->old > freq->new) || @@ -107,12 +109,12 @@ static int time_cpufreq_notifier(struct notifier_block *nb, unsigned long val, *lpj = cpufreq_scale(loops_per_jiffy_ref, ref_freq, freq->new); - cpu_khz = cpufreq_scale(cpu_khz_ref, ref_freq, freq->new); + tsc_khz = cpufreq_scale(tsc_khz_ref, ref_freq, freq->new); if (!(freq->flags & CPUFREQ_CONST_LOOPS)) - mark_tsc_unstable(); + mark_tsc_unstable("cpufreq changes"); } - set_cyc2ns_scale(cpu_khz_ref); + set_cyc2ns_scale(tsc_khz_ref); return 0; } @@ -197,10 +199,11 @@ static struct clocksource clocksource_tsc = { .vread = vread_tsc, }; -void mark_tsc_unstable(void) +void mark_tsc_unstable(char *reason) { if (!tsc_unstable) { tsc_unstable = 1; + printk("Marking TSC unstable due to %s\n", reason); /* Change only the rating, when not registered */ if (clocksource_tsc.mult) clocksource_change_rating(&clocksource_tsc, 0); @@ -213,7 +216,7 @@ EXPORT_SYMBOL_GPL(mark_tsc_unstable); void __init init_tsc_clocksource(void) { if (!notsc) { - clocksource_tsc.mult = clocksource_khz2mult(cpu_khz, + clocksource_tsc.mult = clocksource_khz2mult(tsc_khz, clocksource_tsc.shift); if (check_tsc_unstable()) clocksource_tsc.rating = 0; diff --git a/arch/x86_64/kernel/tsc_sync.c b/arch/x86_64/kernel/tsc_sync.c index 014f0db..355f5f5 100644 --- a/arch/x86_64/kernel/tsc_sync.c +++ b/arch/x86_64/kernel/tsc_sync.c @@ -50,7 +50,7 @@ static __cpuinit void check_tsc_warp(void) /* * The measurement runs for 20 msecs: */ - end = start + cpu_khz * 20ULL; + end = start + tsc_khz * 20ULL; now = start; for (i = 0; ; i++) { @@ -138,7 +138,7 @@ void __cpuinit check_tsc_sync_source(int cpu) printk("\n"); printk(KERN_WARNING "Measured %Ld cycles TSC warp between CPUs," " turning off TSC clock.\n", max_warp); - mark_tsc_unstable(); + mark_tsc_unstable("check_tsc_sync_source failed"); nr_warps = 0; max_warp = 0; last_tsc = 0; diff --git a/arch/x86_64/kernel/verify_cpu.S b/arch/x86_64/kernel/verify_cpu.S new file mode 100644 index 0000000..e035f59 --- /dev/null +++ b/arch/x86_64/kernel/verify_cpu.S @@ -0,0 +1,119 @@ +/* + * + * verify_cpu.S - Code for cpu long mode and SSE verification. This + * code has been borrowed from boot/setup.S and was introduced by + * Andi Kleen. + * + * Copyright (c) 2007 Andi Kleen (ak@suse.de) + * Copyright (c) 2007 Eric Biederman (ebiederm@xmission.com) + * Copyright (c) 2007 Vivek Goyal (vgoyal@in.ibm.com) + * + * This source code is licensed under the GNU General Public License, + * Version 2. See the file COPYING for more details. + * + * This is a common code for verification whether CPU supports + * long mode and SSE or not. It is not called directly instead this + * file is included at various places and compiled in that context. + * Following are the current usage. + * + * This file is included by both 16bit and 32bit code. + * + * arch/x86_64/boot/setup.S : Boot cpu verification (16bit) + * arch/x86_64/boot/compressed/head.S: Boot cpu verification (32bit) + * arch/x86_64/kernel/trampoline.S: secondary processor verfication (16bit) + * arch/x86_64/kernel/acpi/wakeup.S:Verfication at resume (16bit) + * + * verify_cpu, returns the status of cpu check in register %eax. + * 0: Success 1: Failure + * + * The caller needs to check for the error code and take the action + * appropriately. Either display a message or halt. + */ + +#include <asm/cpufeature.h> + +verify_cpu: + pushfl # Save caller passed flags + pushl $0 # Kill any dangerous flags + popfl + + /* minimum CPUID flags for x86-64 as defined by AMD */ +#define M(x) (1<<(x)) +#define M2(a,b) M(a)|M(b) +#define M4(a,b,c,d) M(a)|M(b)|M(c)|M(d) + +#define SSE_MASK \ + (M2(X86_FEATURE_XMM,X86_FEATURE_XMM2)) +#define REQUIRED_MASK1 \ + (M4(X86_FEATURE_FPU,X86_FEATURE_PSE,X86_FEATURE_TSC,X86_FEATURE_MSR)|\ + M4(X86_FEATURE_PAE,X86_FEATURE_CX8,X86_FEATURE_PGE,X86_FEATURE_CMOV)|\ + M(X86_FEATURE_FXSR)) +#define REQUIRED_MASK2 \ + (M(X86_FEATURE_LM - 32)) + + pushfl # standard way to check for cpuid + popl %eax + movl %eax,%ebx + xorl $0x200000,%eax + pushl %eax + popfl + pushfl + popl %eax + cmpl %eax,%ebx + jz verify_cpu_no_longmode # cpu has no cpuid + + movl $0x0,%eax # See if cpuid 1 is implemented + cpuid + cmpl $0x1,%eax + jb verify_cpu_no_longmode # no cpuid 1 + + xor %di,%di + cmpl $0x68747541,%ebx # AuthenticAMD + jnz verify_cpu_noamd + cmpl $0x69746e65,%edx + jnz verify_cpu_noamd + cmpl $0x444d4163,%ecx + jnz verify_cpu_noamd + mov $1,%di # cpu is from AMD + +verify_cpu_noamd: + movl $0x1,%eax # Does the cpu have what it takes + cpuid + andl $REQUIRED_MASK1,%edx + xorl $REQUIRED_MASK1,%edx + jnz verify_cpu_no_longmode + + movl $0x80000000,%eax # See if extended cpuid is implemented + cpuid + cmpl $0x80000001,%eax + jb verify_cpu_no_longmode # no extended cpuid + + movl $0x80000001,%eax # Does the cpu have what it takes + cpuid + andl $REQUIRED_MASK2,%edx + xorl $REQUIRED_MASK2,%edx + jnz verify_cpu_no_longmode + +verify_cpu_sse_test: + movl $1,%eax + cpuid + andl $SSE_MASK,%edx + cmpl $SSE_MASK,%edx + je verify_cpu_sse_ok + test %di,%di + jz verify_cpu_no_longmode # only try to force SSE on AMD + movl $0xc0010015,%ecx # HWCR + rdmsr + btr $15,%eax # enable SSE + wrmsr + xor %di,%di # don't loop + jmp verify_cpu_sse_test # try again + +verify_cpu_no_longmode: + popfl # Restore caller passed flags + movl $1,%eax + ret +verify_cpu_sse_ok: + popfl # Restore caller passed flags + xorl %eax, %eax + ret diff --git a/arch/x86_64/kernel/vmlinux.lds.S b/arch/x86_64/kernel/vmlinux.lds.S index 5176ecf..88cfa50 100644 --- a/arch/x86_64/kernel/vmlinux.lds.S +++ b/arch/x86_64/kernel/vmlinux.lds.S @@ -29,9 +29,7 @@ SECTIONS .text : AT(ADDR(.text) - LOAD_OFFSET) { /* First the code that has to be first for bootstrapping */ *(.bootstrap.text) - /* Then all the functions that are "hot" in profiles, to group them - onto the same hugetlb entry */ - #include "functionlist" + _stext = .; /* Then the rest */ *(.text) SCHED_TEXT @@ -50,10 +48,10 @@ SECTIONS __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { *(__ex_table) } __stop___ex_table = .; - RODATA - BUG_TABLE + RODATA + . = ALIGN(PAGE_SIZE); /* Align data segment to page size boundary */ /* Data */ .data : AT(ADDR(.data) - LOAD_OFFSET) { @@ -94,6 +92,12 @@ SECTIONS { *(.vsyscall_gtod_data) } vsyscall_gtod_data = VVIRT(.vsyscall_gtod_data); + + .vsyscall_1 ADDR(.vsyscall_0) + 1024: AT(VLOAD(.vsyscall_1)) + { *(.vsyscall_1) } + .vsyscall_2 ADDR(.vsyscall_0) + 2048: AT(VLOAD(.vsyscall_2)) + { *(.vsyscall_2) } + .vgetcpu_mode : AT(VLOAD(.vgetcpu_mode)) { *(.vgetcpu_mode) } vgetcpu_mode = VVIRT(.vgetcpu_mode); @@ -101,10 +105,6 @@ SECTIONS .jiffies : AT(VLOAD(.jiffies)) { *(.jiffies) } jiffies = VVIRT(.jiffies); - .vsyscall_1 ADDR(.vsyscall_0) + 1024: AT(VLOAD(.vsyscall_1)) - { *(.vsyscall_1) } - .vsyscall_2 ADDR(.vsyscall_0) + 2048: AT(VLOAD(.vsyscall_2)) - { *(.vsyscall_2) } .vsyscall_3 ADDR(.vsyscall_0) + 3072: AT(VLOAD(.vsyscall_3)) { *(.vsyscall_3) } @@ -194,7 +194,7 @@ SECTIONS __initramfs_end = .; #endif - . = ALIGN(CONFIG_X86_L1_CACHE_BYTES); + . = ALIGN(4096); __per_cpu_start = .; .data.percpu : AT(ADDR(.data.percpu) - LOAD_OFFSET) { *(.data.percpu) } __per_cpu_end = .; diff --git a/arch/x86_64/kernel/vsyscall.c b/arch/x86_64/kernel/vsyscall.c index b43c698..dc32cef 100644 --- a/arch/x86_64/kernel/vsyscall.c +++ b/arch/x86_64/kernel/vsyscall.c @@ -45,14 +45,34 @@ #define __vsyscall(nr) __attribute__ ((unused,__section__(".vsyscall_" #nr))) #define __syscall_clobber "r11","rcx","memory" +#define __pa_vsymbol(x) \ + ({unsigned long v; \ + extern char __vsyscall_0; \ + asm("" : "=r" (v) : "0" (x)); \ + ((v - VSYSCALL_FIRST_PAGE) + __pa_symbol(&__vsyscall_0)); }) +/* + * vsyscall_gtod_data contains data that is : + * - readonly from vsyscalls + * - writen by timer interrupt or systcl (/proc/sys/kernel/vsyscall64) + * Try to keep this structure as small as possible to avoid cache line ping pongs + */ struct vsyscall_gtod_data_t { - seqlock_t lock; - int sysctl_enabled; - struct timeval wall_time_tv; + seqlock_t lock; + + /* open coded 'struct timespec' */ + time_t wall_time_sec; + u32 wall_time_nsec; + + int sysctl_enabled; struct timezone sys_tz; - cycle_t offset_base; - struct clocksource clock; + struct { /* extract of a clocksource struct */ + cycle_t (*vread)(void); + cycle_t cycle_last; + cycle_t mask; + u32 mult; + u32 shift; + } clock; }; int __vgetcpu_mode __section_vgetcpu_mode; @@ -68,9 +88,13 @@ void update_vsyscall(struct timespec *wall_time, struct clocksource *clock) write_seqlock_irqsave(&vsyscall_gtod_data.lock, flags); /* copy vsyscall data */ - vsyscall_gtod_data.clock = *clock; - vsyscall_gtod_data.wall_time_tv.tv_sec = wall_time->tv_sec; - vsyscall_gtod_data.wall_time_tv.tv_usec = wall_time->tv_nsec/1000; + vsyscall_gtod_data.clock.vread = clock->vread; + vsyscall_gtod_data.clock.cycle_last = clock->cycle_last; + vsyscall_gtod_data.clock.mask = clock->mask; + vsyscall_gtod_data.clock.mult = clock->mult; + vsyscall_gtod_data.clock.shift = clock->shift; + vsyscall_gtod_data.wall_time_sec = wall_time->tv_sec; + vsyscall_gtod_data.wall_time_nsec = wall_time->tv_nsec; vsyscall_gtod_data.sys_tz = sys_tz; write_sequnlock_irqrestore(&vsyscall_gtod_data.lock, flags); } @@ -105,7 +129,8 @@ static __always_inline long time_syscall(long *t) static __always_inline void do_vgettimeofday(struct timeval * tv) { cycle_t now, base, mask, cycle_delta; - unsigned long seq, mult, shift, nsec_delta; + unsigned seq; + unsigned long mult, shift, nsec; cycle_t (*vread)(void); do { seq = read_seqbegin(&__vsyscall_gtod_data.lock); @@ -121,21 +146,20 @@ static __always_inline void do_vgettimeofday(struct timeval * tv) mult = __vsyscall_gtod_data.clock.mult; shift = __vsyscall_gtod_data.clock.shift; - *tv = __vsyscall_gtod_data.wall_time_tv; - + tv->tv_sec = __vsyscall_gtod_data.wall_time_sec; + nsec = __vsyscall_gtod_data.wall_time_nsec; } while (read_seqretry(&__vsyscall_gtod_data.lock, seq)); /* calculate interval: */ cycle_delta = (now - base) & mask; /* convert to nsecs: */ - nsec_delta = (cycle_delta * mult) >> shift; + nsec += (cycle_delta * mult) >> shift; - /* convert to usecs and add to timespec: */ - tv->tv_usec += nsec_delta / NSEC_PER_USEC; - while (tv->tv_usec > USEC_PER_SEC) { + while (nsec >= NSEC_PER_SEC) { tv->tv_sec += 1; - tv->tv_usec -= USEC_PER_SEC; + nsec -= NSEC_PER_SEC; } + tv->tv_usec = nsec / NSEC_PER_USEC; } int __vsyscall(0) vgettimeofday(struct timeval * tv, struct timezone * tz) @@ -151,11 +175,13 @@ int __vsyscall(0) vgettimeofday(struct timeval * tv, struct timezone * tz) * unlikely */ time_t __vsyscall(1) vtime(time_t *t) { + time_t result; if (unlikely(!__vsyscall_gtod_data.sysctl_enabled)) return time_syscall(t); - else if (t) - *t = __vsyscall_gtod_data.wall_time_tv.tv_sec; - return __vsyscall_gtod_data.wall_time_tv.tv_sec; + result = __vsyscall_gtod_data.wall_time_sec; + if (t) + *t = result; + return result; } /* Fast way to get current CPU and node. @@ -224,10 +250,10 @@ static int vsyscall_sysctl_change(ctl_table *ctl, int write, struct file * filp, return ret; /* gcc has some trouble with __va(__pa()), so just do it this way. */ - map1 = ioremap(__pa_symbol(&vsysc1), 2); + map1 = ioremap(__pa_vsymbol(&vsysc1), 2); if (!map1) return -ENOMEM; - map2 = ioremap(__pa_symbol(&vsysc2), 2); + map2 = ioremap(__pa_vsymbol(&vsysc2), 2); if (!map2) { ret = -ENOMEM; goto out; diff --git a/arch/x86_64/mm/fault.c b/arch/x86_64/mm/fault.c index 6ada723..de99dba 100644 --- a/arch/x86_64/mm/fault.c +++ b/arch/x86_64/mm/fault.c @@ -585,7 +585,7 @@ do_sigbus: } DEFINE_SPINLOCK(pgd_lock); -struct page *pgd_list; +LIST_HEAD(pgd_list); void vmalloc_sync_all(void) { @@ -605,8 +605,7 @@ void vmalloc_sync_all(void) if (pgd_none(*pgd_ref)) continue; spin_lock(&pgd_lock); - for (page = pgd_list; page; - page = (struct page *)page->index) { + list_for_each_entry(page, &pgd_list, lru) { pgd_t *pgd; pgd = (pgd_t *)page_address(page) + pgd_index(address); if (pgd_none(*pgd)) diff --git a/arch/x86_64/mm/init.c b/arch/x86_64/mm/init.c index ec31534..282b0a8 100644 --- a/arch/x86_64/mm/init.c +++ b/arch/x86_64/mm/init.c @@ -22,10 +22,12 @@ #include <linux/bootmem.h> #include <linux/proc_fs.h> #include <linux/pci.h> +#include <linux/pfn.h> #include <linux/poison.h> #include <linux/dma-mapping.h> #include <linux/module.h> #include <linux/memory_hotplug.h> +#include <linux/nmi.h> #include <asm/processor.h> #include <asm/system.h> @@ -46,7 +48,7 @@ #define Dprintk(x...) #endif -struct dma_mapping_ops* dma_ops; +const struct dma_mapping_ops* dma_ops; EXPORT_SYMBOL(dma_ops); static unsigned long dma_reserve __initdata; @@ -72,6 +74,11 @@ void show_mem(void) for_each_online_pgdat(pgdat) { for (i = 0; i < pgdat->node_spanned_pages; ++i) { + /* this loop can take a while with 256 GB and 4k pages + so update the NMI watchdog */ + if (unlikely(i % MAX_ORDER_NR_PAGES == 0)) { + touch_nmi_watchdog(); + } page = pfn_to_page(pgdat->node_start_pfn + i); total++; if (PageReserved(page)) @@ -167,23 +174,9 @@ __set_fixmap (enum fixed_addresses idx, unsigned long phys, pgprot_t prot) unsigned long __initdata table_start, table_end; -extern pmd_t temp_boot_pmds[]; - -static struct temp_map { - pmd_t *pmd; - void *address; - int allocated; -} temp_mappings[] __initdata = { - { &temp_boot_pmds[0], (void *)(40UL * 1024 * 1024) }, - { &temp_boot_pmds[1], (void *)(42UL * 1024 * 1024) }, - {} -}; - -static __meminit void *alloc_low_page(int *index, unsigned long *phys) +static __meminit void *alloc_low_page(unsigned long *phys) { - struct temp_map *ti; - int i; - unsigned long pfn = table_end++, paddr; + unsigned long pfn = table_end++; void *adr; if (after_bootmem) { @@ -194,57 +187,63 @@ static __meminit void *alloc_low_page(int *index, unsigned long *phys) if (pfn >= end_pfn) panic("alloc_low_page: ran out of memory"); - for (i = 0; temp_mappings[i].allocated; i++) { - if (!temp_mappings[i].pmd) - panic("alloc_low_page: ran out of temp mappings"); - } - ti = &temp_mappings[i]; - paddr = (pfn << PAGE_SHIFT) & PMD_MASK; - set_pmd(ti->pmd, __pmd(paddr | _KERNPG_TABLE | _PAGE_PSE)); - ti->allocated = 1; - __flush_tlb(); - adr = ti->address + ((pfn << PAGE_SHIFT) & ~PMD_MASK); + + adr = early_ioremap(pfn * PAGE_SIZE, PAGE_SIZE); memset(adr, 0, PAGE_SIZE); - *index = i; - *phys = pfn * PAGE_SIZE; - return adr; -} + *phys = pfn * PAGE_SIZE; + return adr; +} -static __meminit void unmap_low_page(int i) +static __meminit void unmap_low_page(void *adr) { - struct temp_map *ti; if (after_bootmem) return; - ti = &temp_mappings[i]; - set_pmd(ti->pmd, __pmd(0)); - ti->allocated = 0; + early_iounmap(adr, PAGE_SIZE); } /* Must run before zap_low_mappings */ __init void *early_ioremap(unsigned long addr, unsigned long size) { - unsigned long map = round_down(addr, LARGE_PAGE_SIZE); - - /* actually usually some more */ - if (size >= LARGE_PAGE_SIZE) { - return NULL; + unsigned long vaddr; + pmd_t *pmd, *last_pmd; + int i, pmds; + + pmds = ((addr & ~PMD_MASK) + size + ~PMD_MASK) / PMD_SIZE; + vaddr = __START_KERNEL_map; + pmd = level2_kernel_pgt; + last_pmd = level2_kernel_pgt + PTRS_PER_PMD - 1; + for (; pmd <= last_pmd; pmd++, vaddr += PMD_SIZE) { + for (i = 0; i < pmds; i++) { + if (pmd_present(pmd[i])) + goto next; + } + vaddr += addr & ~PMD_MASK; + addr &= PMD_MASK; + for (i = 0; i < pmds; i++, addr += PMD_SIZE) + set_pmd(pmd + i,__pmd(addr | _KERNPG_TABLE | _PAGE_PSE)); + __flush_tlb(); + return (void *)vaddr; + next: + ; } - set_pmd(temp_mappings[0].pmd, __pmd(map | _KERNPG_TABLE | _PAGE_PSE)); - map += LARGE_PAGE_SIZE; - set_pmd(temp_mappings[1].pmd, __pmd(map | _KERNPG_TABLE | _PAGE_PSE)); - __flush_tlb(); - return temp_mappings[0].address + (addr & (LARGE_PAGE_SIZE-1)); + printk("early_ioremap(0x%lx, %lu) failed\n", addr, size); + return NULL; } /* To avoid virtual aliases later */ __init void early_iounmap(void *addr, unsigned long size) { - if ((void *)round_down((unsigned long)addr, LARGE_PAGE_SIZE) != temp_mappings[0].address) - printk("early_iounmap: bad address %p\n", addr); - set_pmd(temp_mappings[0].pmd, __pmd(0)); - set_pmd(temp_mappings[1].pmd, __pmd(0)); + unsigned long vaddr; + pmd_t *pmd; + int i, pmds; + + vaddr = (unsigned long)addr; + pmds = ((vaddr & ~PMD_MASK) + size + ~PMD_MASK) / PMD_SIZE; + pmd = level2_kernel_pgt + pmd_index(vaddr); + for (i = 0; i < pmds; i++) + pmd_clear(pmd + i); __flush_tlb(); } @@ -289,7 +288,6 @@ static void __meminit phys_pud_init(pud_t *pud_page, unsigned long addr, unsigne for (; i < PTRS_PER_PUD; i++, addr = (addr & PUD_MASK) + PUD_SIZE ) { - int map; unsigned long pmd_phys; pud_t *pud = pud_page + pud_index(addr); pmd_t *pmd; @@ -307,12 +305,12 @@ static void __meminit phys_pud_init(pud_t *pud_page, unsigned long addr, unsigne continue; } - pmd = alloc_low_page(&map, &pmd_phys); + pmd = alloc_low_page(&pmd_phys); spin_lock(&init_mm.page_table_lock); set_pud(pud, __pud(pmd_phys | _KERNPG_TABLE)); phys_pmd_init(pmd, addr, end); spin_unlock(&init_mm.page_table_lock); - unmap_low_page(map); + unmap_low_page(pmd); } __flush_tlb(); } @@ -364,7 +362,6 @@ void __meminit init_memory_mapping(unsigned long start, unsigned long end) end = (unsigned long)__va(end); for (; start < end; start = next) { - int map; unsigned long pud_phys; pgd_t *pgd = pgd_offset_k(start); pud_t *pud; @@ -372,7 +369,7 @@ void __meminit init_memory_mapping(unsigned long start, unsigned long end) if (after_bootmem) pud = pud_offset(pgd, start & PGDIR_MASK); else - pud = alloc_low_page(&map, &pud_phys); + pud = alloc_low_page(&pud_phys); next = start + PGDIR_SIZE; if (next > end) @@ -380,7 +377,7 @@ void __meminit init_memory_mapping(unsigned long start, unsigned long end) phys_pud_init(pud, __pa(start), __pa(next)); if (!after_bootmem) set_pgd(pgd_offset_k(start), mk_kernel_pgd(pud_phys)); - unmap_low_page(map); + unmap_low_page(pud); } if (!after_bootmem) @@ -388,21 +385,6 @@ void __meminit init_memory_mapping(unsigned long start, unsigned long end) __flush_tlb_all(); } -void __cpuinit zap_low_mappings(int cpu) -{ - if (cpu == 0) { - pgd_t *pgd = pgd_offset_k(0UL); - pgd_clear(pgd); - } else { - /* - * For AP's, zap the low identity mappings by changing the cr3 - * to init_level4_pgt and doing local flush tlb all - */ - asm volatile("movq %0,%%cr3" :: "r" (__pa_symbol(&init_level4_pgt))); - } - __flush_tlb_all(); -} - #ifndef CONFIG_NUMA void __init paging_init(void) { @@ -579,15 +561,6 @@ void __init mem_init(void) reservedpages << (PAGE_SHIFT-10), datasize >> 10, initsize >> 10); - -#ifdef CONFIG_SMP - /* - * Sync boot_level4_pgt mappings with the init_level4_pgt - * except for the low identity mappings which are already zapped - * in init_level4_pgt. This sync-up is essential for AP's bringup - */ - memcpy(boot_level4_pgt+1, init_level4_pgt+1, (PTRS_PER_PGD-1)*sizeof(pgd_t)); -#endif } void free_init_pages(char *what, unsigned long begin, unsigned long end) @@ -597,37 +570,44 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end) if (begin >= end) return; - printk(KERN_INFO "Freeing %s: %ldk freed\n", what, (end - begin) >> 10); + printk(KERN_INFO "Freeing %s: %luk freed\n", what, (end - begin) >> 10); for (addr = begin; addr < end; addr += PAGE_SIZE) { - ClearPageReserved(virt_to_page(addr)); - init_page_count(virt_to_page(addr)); - memset((void *)(addr & ~(PAGE_SIZE-1)), - POISON_FREE_INITMEM, PAGE_SIZE); - free_page(addr); + struct page *page = pfn_to_page(addr >> PAGE_SHIFT); + ClearPageReserved(page); + init_page_count(page); + memset(page_address(page), POISON_FREE_INITMEM, PAGE_SIZE); + if (addr >= __START_KERNEL_map) + change_page_attr_addr(addr, 1, __pgprot(0)); + __free_page(page); totalram_pages++; } + if (addr > __START_KERNEL_map) + global_flush_tlb(); } void free_initmem(void) { - memset(__initdata_begin, POISON_FREE_INITDATA, - __initdata_end - __initdata_begin); free_init_pages("unused kernel memory", - (unsigned long)(&__init_begin), - (unsigned long)(&__init_end)); + __pa_symbol(&__init_begin), + __pa_symbol(&__init_end)); } #ifdef CONFIG_DEBUG_RODATA void mark_rodata_ro(void) { - unsigned long addr = (unsigned long)__start_rodata; + unsigned long start = PFN_ALIGN(__va(__pa_symbol(&_stext))), size; - for (; addr < (unsigned long)__end_rodata; addr += PAGE_SIZE) - change_page_attr_addr(addr, 1, PAGE_KERNEL_RO); +#ifdef CONFIG_HOTPLUG_CPU + /* It must still be possible to apply SMP alternatives. */ + if (num_possible_cpus() > 1) + start = PFN_ALIGN(__va(__pa_symbol(&_etext))); +#endif + size = (unsigned long)__va(__pa_symbol(&__end_rodata)) - start; + change_page_attr_addr(start, size >> PAGE_SHIFT, PAGE_KERNEL_RO); - printk ("Write protecting the kernel read-only data: %luk\n", - (__end_rodata - __start_rodata) >> 10); + printk(KERN_INFO "Write protecting the kernel read-only data: %luk\n", + size >> 10); /* * change_page_attr_addr() requires a global_flush_tlb() call after it. @@ -642,7 +622,7 @@ void mark_rodata_ro(void) #ifdef CONFIG_BLK_DEV_INITRD void free_initrd_mem(unsigned long start, unsigned long end) { - free_init_pages("initrd memory", start, end); + free_init_pages("initrd memory", __pa(start), __pa(end)); } #endif diff --git a/arch/x86_64/mm/k8topology.c b/arch/x86_64/mm/k8topology.c index b5b8dba..f983c75 100644 --- a/arch/x86_64/mm/k8topology.c +++ b/arch/x86_64/mm/k8topology.c @@ -49,11 +49,8 @@ int __init k8_scan_nodes(unsigned long start, unsigned long end) int found = 0; u32 reg; unsigned numnodes; - nodemask_t nodes_parsed; unsigned dualcore = 0; - nodes_clear(nodes_parsed); - if (!early_pci_allowed()) return -1; @@ -65,6 +62,8 @@ int __init k8_scan_nodes(unsigned long start, unsigned long end) reg = read_pci_config(0, nb, 0, 0x60); numnodes = ((reg >> 4) & 0xF) + 1; + if (numnodes <= 1) + return -1; printk(KERN_INFO "Number of nodes %d\n", numnodes); @@ -102,7 +101,7 @@ int __init k8_scan_nodes(unsigned long start, unsigned long end) nodeid, (base>>8)&3, (limit>>8) & 3); return -1; } - if (node_isset(nodeid, nodes_parsed)) { + if (node_isset(nodeid, node_possible_map)) { printk(KERN_INFO "Node %d already present. Skipping\n", nodeid); continue; @@ -155,7 +154,7 @@ int __init k8_scan_nodes(unsigned long start, unsigned long end) prevbase = base; - node_set(nodeid, nodes_parsed); + node_set(nodeid, node_possible_map); } if (!found) diff --git a/arch/x86_64/mm/numa.c b/arch/x86_64/mm/numa.c index 41b8fb0..5154894 100644 --- a/arch/x86_64/mm/numa.c +++ b/arch/x86_64/mm/numa.c @@ -273,125 +273,213 @@ void __init numa_init_array(void) #ifdef CONFIG_NUMA_EMU /* Numa emulation */ -int numa_fake __initdata = 0; +#define E820_ADDR_HOLE_SIZE(start, end) \ + (e820_hole_size((start) >> PAGE_SHIFT, (end) >> PAGE_SHIFT) << \ + PAGE_SHIFT) +char *cmdline __initdata; /* - * This function is used to find out if the start and end correspond to - * different zones. + * Setups up nid to range from addr to addr + size. If the end boundary is + * greater than max_addr, then max_addr is used instead. The return value is 0 + * if there is additional memory left for allocation past addr and -1 otherwise. + * addr is adjusted to be at the end of the node. */ -int zone_cross_over(unsigned long start, unsigned long end) +static int __init setup_node_range(int nid, struct bootnode *nodes, u64 *addr, + u64 size, u64 max_addr) { - if ((start < (MAX_DMA32_PFN << PAGE_SHIFT)) && - (end >= (MAX_DMA32_PFN << PAGE_SHIFT))) - return 1; - return 0; + int ret = 0; + nodes[nid].start = *addr; + *addr += size; + if (*addr >= max_addr) { + *addr = max_addr; + ret = -1; + } + nodes[nid].end = *addr; + node_set(nid, node_possible_map); + printk(KERN_INFO "Faking node %d at %016Lx-%016Lx (%LuMB)\n", nid, + nodes[nid].start, nodes[nid].end, + (nodes[nid].end - nodes[nid].start) >> 20); + return ret; } -static int __init numa_emulation(unsigned long start_pfn, unsigned long end_pfn) +/* + * Splits num_nodes nodes up equally starting at node_start. The return value + * is the number of nodes split up and addr is adjusted to be at the end of the + * last node allocated. + */ +static int __init split_nodes_equally(struct bootnode *nodes, u64 *addr, + u64 max_addr, int node_start, + int num_nodes) { - int i, big; - struct bootnode nodes[MAX_NUMNODES]; - unsigned long sz, old_sz; - unsigned long hole_size; - unsigned long start, end; - unsigned long max_addr = (end_pfn << PAGE_SHIFT); - - start = (start_pfn << PAGE_SHIFT); - hole_size = e820_hole_size(start, max_addr); - sz = (max_addr - start - hole_size) / numa_fake; - - /* Kludge needed for the hash function */ - - old_sz = sz; - /* - * Round down to the nearest FAKE_NODE_MIN_SIZE. - */ - sz &= FAKE_NODE_MIN_HASH_MASK; + unsigned int big; + u64 size; + int i; + if (num_nodes <= 0) + return -1; + if (num_nodes > MAX_NUMNODES) + num_nodes = MAX_NUMNODES; + size = (max_addr - *addr - E820_ADDR_HOLE_SIZE(*addr, max_addr)) / + num_nodes; /* - * We ensure that each node is at least 64MB big. Smaller than this - * size can cause VM hiccups. + * Calculate the number of big nodes that can be allocated as a result + * of consolidating the leftovers. */ - if (sz == 0) { - printk(KERN_INFO "Not enough memory for %d nodes. Reducing " - "the number of nodes\n", numa_fake); - numa_fake = (max_addr - start - hole_size) / FAKE_NODE_MIN_SIZE; - printk(KERN_INFO "Number of fake nodes will be = %d\n", - numa_fake); - sz = FAKE_NODE_MIN_SIZE; + big = ((size & ~FAKE_NODE_MIN_HASH_MASK) * num_nodes) / + FAKE_NODE_MIN_SIZE; + + /* Round down to nearest FAKE_NODE_MIN_SIZE. */ + size &= FAKE_NODE_MIN_HASH_MASK; + if (!size) { + printk(KERN_ERR "Not enough memory for each node. " + "NUMA emulation disabled.\n"); + return -1; } - /* - * Find out how many nodes can get an extra NODE_MIN_SIZE granule. - * This logic ensures the extra memory gets distributed among as many - * nodes as possible (as compared to one single node getting all that - * extra memory. - */ - big = ((old_sz - sz) * numa_fake) / FAKE_NODE_MIN_SIZE; - printk(KERN_INFO "Fake node Size: %luMB hole_size: %luMB big nodes: " - "%d\n", - (sz >> 20), (hole_size >> 20), big); - memset(&nodes,0,sizeof(nodes)); - end = start; - for (i = 0; i < numa_fake; i++) { - /* - * In case we are not able to allocate enough memory for all - * the nodes, we reduce the number of fake nodes. - */ - if (end >= max_addr) { - numa_fake = i - 1; - break; - } - start = nodes[i].start = end; - /* - * Final node can have all the remaining memory. - */ - if (i == numa_fake-1) - sz = max_addr - start; - end = nodes[i].start + sz; - /* - * Fir "big" number of nodes get extra granule. - */ + + for (i = node_start; i < num_nodes + node_start; i++) { + u64 end = *addr + size; if (i < big) end += FAKE_NODE_MIN_SIZE; /* - * Iterate over the range to ensure that this node gets at - * least sz amount of RAM (excluding holes) + * The final node can have the remaining system RAM. Other + * nodes receive roughly the same amount of available pages. */ - while ((end - start - e820_hole_size(start, end)) < sz) { - end += FAKE_NODE_MIN_SIZE; - if (end >= max_addr) - break; + if (i == num_nodes + node_start - 1) + end = max_addr; + else + while (end - *addr - E820_ADDR_HOLE_SIZE(*addr, end) < + size) { + end += FAKE_NODE_MIN_SIZE; + if (end > max_addr) { + end = max_addr; + break; + } + } + if (setup_node_range(i, nodes, addr, end - *addr, max_addr) < 0) + break; + } + return i - node_start + 1; +} + +/* + * Splits the remaining system RAM into chunks of size. The remaining memory is + * always assigned to a final node and can be asymmetric. Returns the number of + * nodes split. + */ +static int __init split_nodes_by_size(struct bootnode *nodes, u64 *addr, + u64 max_addr, int node_start, u64 size) +{ + int i = node_start; + size = (size << 20) & FAKE_NODE_MIN_HASH_MASK; + while (!setup_node_range(i++, nodes, addr, size, max_addr)) + ; + return i - node_start; +} + +/* + * Sets up the system RAM area from start_pfn to end_pfn according to the + * numa=fake command-line option. + */ +static int __init numa_emulation(unsigned long start_pfn, unsigned long end_pfn) +{ + struct bootnode nodes[MAX_NUMNODES]; + u64 addr = start_pfn << PAGE_SHIFT; + u64 max_addr = end_pfn << PAGE_SHIFT; + int num_nodes = 0; + int coeff_flag; + int coeff = -1; + int num = 0; + u64 size; + int i; + + memset(&nodes, 0, sizeof(nodes)); + /* + * If the numa=fake command-line is just a single number N, split the + * system RAM into N fake nodes. + */ + if (!strchr(cmdline, '*') && !strchr(cmdline, ',')) { + num_nodes = split_nodes_equally(nodes, &addr, max_addr, 0, + simple_strtol(cmdline, NULL, 0)); + if (num_nodes < 0) + return num_nodes; + goto out; + } + + /* Parse the command line. */ + for (coeff_flag = 0; ; cmdline++) { + if (*cmdline && isdigit(*cmdline)) { + num = num * 10 + *cmdline - '0'; + continue; } - /* - * Look at the next node to make sure there is some real memory - * to map. Bad things happen when the only memory present - * in a zone on a fake node is IO hole. - */ - while (e820_hole_size(end, end + FAKE_NODE_MIN_SIZE) > 0) { - if (zone_cross_over(start, end + sz)) { - end = (MAX_DMA32_PFN << PAGE_SHIFT); + if (*cmdline == '*') { + if (num > 0) + coeff = num; + coeff_flag = 1; + } + if (!*cmdline || *cmdline == ',') { + if (!coeff_flag) + coeff = 1; + /* + * Round down to the nearest FAKE_NODE_MIN_SIZE. + * Command-line coefficients are in megabytes. + */ + size = ((u64)num << 20) & FAKE_NODE_MIN_HASH_MASK; + if (size) + for (i = 0; i < coeff; i++, num_nodes++) + if (setup_node_range(num_nodes, nodes, + &addr, size, max_addr) < 0) + goto done; + if (!*cmdline) break; - } - if (end >= max_addr) + coeff_flag = 0; + coeff = -1; + } + num = 0; + } +done: + if (!num_nodes) + return -1; + /* Fill remainder of system RAM, if appropriate. */ + if (addr < max_addr) { + if (coeff_flag && coeff < 0) { + /* Split remaining nodes into num-sized chunks */ + num_nodes += split_nodes_by_size(nodes, &addr, max_addr, + num_nodes, num); + goto out; + } + switch (*(cmdline - 1)) { + case '*': + /* Split remaining nodes into coeff chunks */ + if (coeff <= 0) break; - end += FAKE_NODE_MIN_SIZE; + num_nodes += split_nodes_equally(nodes, &addr, max_addr, + num_nodes, coeff); + break; + case ',': + /* Do not allocate remaining system RAM */ + break; + default: + /* Give one final node */ + setup_node_range(num_nodes, nodes, &addr, + max_addr - addr, max_addr); + num_nodes++; } - if (end > max_addr) - end = max_addr; - nodes[i].end = end; - printk(KERN_INFO "Faking node %d at %016Lx-%016Lx (%LuMB)\n", - i, - nodes[i].start, nodes[i].end, - (nodes[i].end - nodes[i].start) >> 20); - node_set_online(i); - } - memnode_shift = compute_hash_shift(nodes, numa_fake); - if (memnode_shift < 0) { - memnode_shift = 0; - printk(KERN_ERR "No NUMA hash function found. Emulation disabled.\n"); - return -1; - } - for_each_online_node(i) { + } +out: + memnode_shift = compute_hash_shift(nodes, num_nodes); + if (memnode_shift < 0) { + memnode_shift = 0; + printk(KERN_ERR "No NUMA hash function found. NUMA emulation " + "disabled.\n"); + return -1; + } + + /* + * We need to vacate all active ranges that may have been registered by + * SRAT. + */ + remove_all_active_ranges(); + for_each_node_mask(i, node_possible_map) { e820_register_active_regions(i, nodes[i].start >> PAGE_SHIFT, nodes[i].end >> PAGE_SHIFT); setup_node_bootmem(i, nodes[i].start, nodes[i].end); @@ -399,26 +487,32 @@ static int __init numa_emulation(unsigned long start_pfn, unsigned long end_pfn) numa_init_array(); return 0; } -#endif +#undef E820_ADDR_HOLE_SIZE +#endif /* CONFIG_NUMA_EMU */ void __init numa_initmem_init(unsigned long start_pfn, unsigned long end_pfn) { int i; + nodes_clear(node_possible_map); + #ifdef CONFIG_NUMA_EMU - if (numa_fake && !numa_emulation(start_pfn, end_pfn)) + if (cmdline && !numa_emulation(start_pfn, end_pfn)) return; + nodes_clear(node_possible_map); #endif #ifdef CONFIG_ACPI_NUMA if (!numa_off && !acpi_scan_nodes(start_pfn << PAGE_SHIFT, end_pfn << PAGE_SHIFT)) return; + nodes_clear(node_possible_map); #endif #ifdef CONFIG_K8_NUMA if (!numa_off && !k8_scan_nodes(start_pfn<<PAGE_SHIFT, end_pfn<<PAGE_SHIFT)) return; + nodes_clear(node_possible_map); #endif printk(KERN_INFO "%s\n", numa_off ? "NUMA turned off" : "No NUMA configuration found"); @@ -432,6 +526,7 @@ void __init numa_initmem_init(unsigned long start_pfn, unsigned long end_pfn) memnodemap[0] = 0; nodes_clear(node_online_map); node_set_online(0); + node_set(0, node_possible_map); for (i = 0; i < NR_CPUS; i++) numa_set_node(i, 0); node_to_cpumask[0] = cpumask_of_cpu(0); @@ -486,11 +581,8 @@ static __init int numa_setup(char *opt) if (!strncmp(opt,"off",3)) numa_off = 1; #ifdef CONFIG_NUMA_EMU - if(!strncmp(opt, "fake=", 5)) { - numa_fake = simple_strtoul(opt+5,NULL,0); ; - if (numa_fake >= MAX_NUMNODES) - numa_fake = MAX_NUMNODES; - } + if (!strncmp(opt, "fake=", 5)) + cmdline = opt + 5; #endif #ifdef CONFIG_ACPI_NUMA if (!strncmp(opt,"noacpi",6)) diff --git a/arch/x86_64/mm/pageattr.c b/arch/x86_64/mm/pageattr.c index 081409a..bf4aa8d 100644 --- a/arch/x86_64/mm/pageattr.c +++ b/arch/x86_64/mm/pageattr.c @@ -51,7 +51,6 @@ static struct page *split_large_page(unsigned long address, pgprot_t prot, SetPagePrivate(base); page_private(base) = 0; - address = __pa(address); addr = address & LARGE_PAGE_MASK; pbase = (pte_t *)page_address(base); for (i = 0; i < PTRS_PER_PTE; i++, addr += PAGE_SIZE) { @@ -101,13 +100,12 @@ static inline void save_page(struct page *fpage) * No more special protections in this 2/4MB area - revert to a * large page again. */ -static void revert_page(unsigned long address, pgprot_t ref_prot) +static void revert_page(unsigned long address, unsigned long pfn, pgprot_t ref_prot) { pgd_t *pgd; pud_t *pud; pmd_t *pmd; pte_t large_pte; - unsigned long pfn; pgd = pgd_offset_k(address); BUG_ON(pgd_none(*pgd)); @@ -115,7 +113,6 @@ static void revert_page(unsigned long address, pgprot_t ref_prot) BUG_ON(pud_none(*pud)); pmd = pmd_offset(pud, address); BUG_ON(pmd_val(*pmd) & _PAGE_PSE); - pfn = (__pa(address) & LARGE_PAGE_MASK) >> PAGE_SHIFT; large_pte = pfn_pte(pfn, ref_prot); large_pte = pte_mkhuge(large_pte); set_pte((pte_t *)pmd, large_pte); @@ -141,7 +138,8 @@ __change_page_attr(unsigned long address, unsigned long pfn, pgprot_t prot, */ struct page *split; ref_prot2 = pte_pgprot(pte_clrhuge(*kpte)); - split = split_large_page(address, prot, ref_prot2); + split = split_large_page(pfn << PAGE_SHIFT, prot, + ref_prot2); if (!split) return -ENOMEM; set_pte(kpte, mk_pte(split, ref_prot2)); @@ -160,7 +158,7 @@ __change_page_attr(unsigned long address, unsigned long pfn, pgprot_t prot, if (page_private(kpte_page) == 0) { save_page(kpte_page); - revert_page(address, ref_prot); + revert_page(address, pfn, ref_prot); } return 0; } @@ -180,22 +178,32 @@ __change_page_attr(unsigned long address, unsigned long pfn, pgprot_t prot, */ int change_page_attr_addr(unsigned long address, int numpages, pgprot_t prot) { - int err = 0; + unsigned long phys_base_pfn = __pa_symbol(__START_KERNEL_map) >> PAGE_SHIFT; + int err = 0, kernel_map = 0; int i; + if (address >= __START_KERNEL_map + && address < __START_KERNEL_map + KERNEL_TEXT_SIZE) { + address = (unsigned long)__va(__pa(address)); + kernel_map = 1; + } + down_write(&init_mm.mmap_sem); for (i = 0; i < numpages; i++, address += PAGE_SIZE) { unsigned long pfn = __pa(address) >> PAGE_SHIFT; - err = __change_page_attr(address, pfn, prot, PAGE_KERNEL); - if (err) - break; + if (!kernel_map || pte_present(pfn_pte(0, prot))) { + err = __change_page_attr(address, pfn, prot, PAGE_KERNEL); + if (err) + break; + } /* Handle kernel mapping too which aliases part of the * lowmem */ - if (__pa(address) < KERNEL_TEXT_SIZE) { + if ((pfn >= phys_base_pfn) && + ((pfn - phys_base_pfn) < (KERNEL_TEXT_SIZE >> PAGE_SHIFT))) { unsigned long addr2; pgprot_t prot2; - addr2 = __START_KERNEL_map + __pa(address); + addr2 = __START_KERNEL_map + ((pfn - phys_base_pfn) << PAGE_SHIFT); /* Make sure the kernel mappings stay executable */ prot2 = pte_pgprot(pte_mkexec(pfn_pte(0, prot))); err = __change_page_attr(addr2, pfn, prot2, diff --git a/arch/x86_64/mm/srat.c b/arch/x86_64/mm/srat.c index 2efe215..1e76bb0 100644 --- a/arch/x86_64/mm/srat.c +++ b/arch/x86_64/mm/srat.c @@ -419,19 +419,21 @@ int __init acpi_scan_nodes(unsigned long start, unsigned long end) return -1; } + node_possible_map = nodes_parsed; + /* Finally register nodes */ - for_each_node_mask(i, nodes_parsed) + for_each_node_mask(i, node_possible_map) setup_node_bootmem(i, nodes[i].start, nodes[i].end); /* Try again in case setup_node_bootmem missed one due to missing bootmem */ - for_each_node_mask(i, nodes_parsed) + for_each_node_mask(i, node_possible_map) if (!node_online(i)) setup_node_bootmem(i, nodes[i].start, nodes[i].end); for (i = 0; i < NR_CPUS; i++) { if (cpu_to_node[i] == NUMA_NO_NODE) continue; - if (!node_isset(cpu_to_node[i], nodes_parsed)) + if (!node_isset(cpu_to_node[i], node_possible_map)) numa_set_node(i, NUMA_NO_NODE); } numa_init_array(); |
