diff options
| -rw-r--r-- | arch/x86/boot/compressed/head_32.S | 8 | ||||
| -rw-r--r-- | arch/x86/boot/compressed/head_64.S | 18 | ||||
| -rw-r--r-- | arch/x86/boot/compressed/vmlinux.lds.S | 19 |
3 files changed, 29 insertions, 16 deletions
diff --git a/arch/x86/boot/compressed/head_32.S b/arch/x86/boot/compressed/head_32.S index 7bd7766..59425e1 100644 --- a/arch/x86/boot/compressed/head_32.S +++ b/arch/x86/boot/compressed/head_32.S @@ -93,9 +93,9 @@ ENTRY(startup_32) * where decompression in place becomes safe. */ pushl %esi - leal _ebss(%ebp), %esi - leal _ebss(%ebx), %edi - movl $(_ebss - startup_32), %ecx + leal _bss(%ebp), %esi + leal _bss(%ebx), %edi + movl $(_bss - startup_32), %ecx std rep movsb cld @@ -125,7 +125,7 @@ relocated: * Clear BSS */ xorl %eax, %eax - leal _edata(%ebx), %edi + leal _bss(%ebx), %edi leal _ebss(%ebx), %ecx subl %edi, %ecx cld diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S index 26c3def..5bc9052 100644 --- a/arch/x86/boot/compressed/head_64.S +++ b/arch/x86/boot/compressed/head_64.S @@ -253,9 +253,9 @@ ENTRY(startup_64) * Copy the compressed kernel to the end of our buffer * where decompression in place becomes safe. */ - leaq _end_before_pgt(%rip), %r8 - leaq _end_before_pgt(%rbx), %r9 - movq $_end_before_pgt /* - $startup_32 */, %rcx + leaq _bss(%rip), %r8 + leaq _bss(%rbx), %r9 + movq $_bss /* - $startup_32 */, %rcx 1: subq $8, %r8 subq $8, %r9 movq 0(%r8), %rax @@ -276,8 +276,8 @@ relocated: * Clear BSS */ xorq %rax, %rax - leaq _edata(%rbx), %rdi - leaq _end_before_pgt(%rbx), %rcx + leaq _bss(%rbx), %rdi + leaq _ebss(%rbx), %rcx subq %rdi, %rcx cld rep stosb @@ -329,3 +329,11 @@ boot_heap: boot_stack: .fill BOOT_STACK_SIZE, 1, 0 boot_stack_end: + +/* + * Space for page tables (not in .bss so not zeroed) + */ + .section ".pgtable","a",@nobits + .balign 4096 +pgtable: + .fill 6*4096, 1, 0 diff --git a/arch/x86/boot/compressed/vmlinux.lds.S b/arch/x86/boot/compressed/vmlinux.lds.S index dbe515e..cc353e1 100644 --- a/arch/x86/boot/compressed/vmlinux.lds.S +++ b/arch/x86/boot/compressed/vmlinux.lds.S @@ -2,6 +2,8 @@ OUTPUT_FORMAT(CONFIG_OUTPUT_FORMAT, CONFIG_OUTPUT_FORMAT, CONFIG_OUTPUT_FORMAT) #undef i386 +#include <asm/page_types.h> + #ifdef CONFIG_X86_64 OUTPUT_ARCH(i386:x86-64) ENTRY(startup_64) @@ -48,13 +50,16 @@ SECTIONS *(.bss) *(.bss.*) *(COMMON) -#ifdef CONFIG_X86_64 - . = ALIGN(8); - _end_before_pgt = . ; - . = ALIGN(4096); - pgtable = . ; - . = . + 4096 * 6; -#endif + . = ALIGN(8); /* For convenience during zeroing */ _ebss = .; } +#ifdef CONFIG_X86_64 + . = ALIGN(PAGE_SIZE); + .pgtable : { + _pgtable = . ; + *(.pgtable) + _epgtable = . ; + } +#endif + _end = .; } |
