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authorLinus Torvalds <torvalds@linux-foundation.org>2011-05-22 12:38:40 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-05-22 12:38:40 -0700
commit17238005f377888b9d4583835205c77e3d781bb8 (patch)
tree9cad40902138d08a2694f87736cfebd031dc9542 /arch/parisc/kernel
parent34ea646c9f8c18fd2e4332ff3b2b509f878c56f1 (diff)
parent7fe2ac6882f74e8bd5b3891f63c09cb10aee9d03 (diff)
downloadop-kernel-dev-17238005f377888b9d4583835205c77e3d781bb8.zip
op-kernel-dev-17238005f377888b9d4583835205c77e3d781bb8.tar.gz
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/parisc-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/parisc-2.6: [PARISC] wire up syncfs syscall [PARISC] wire up the fhandle syscalls [PARISC] wire up clock_adjtime syscall [PARISC] wire up fanotify syscalls [PARISC] prevent speculative re-read on cache flush [PARISC] only make executable areas executable [PARISC] fix pacache .size with new binutils
Diffstat (limited to 'arch/parisc/kernel')
-rw-r--r--arch/parisc/kernel/cache.c13
-rw-r--r--arch/parisc/kernel/entry.S3
-rw-r--r--arch/parisc/kernel/head.S5
-rw-r--r--arch/parisc/kernel/module.c10
-rw-r--r--arch/parisc/kernel/pacache.S6
-rw-r--r--arch/parisc/kernel/sys_parisc32.c8
-rw-r--r--arch/parisc/kernel/syscall_table.S6
-rw-r--r--arch/parisc/kernel/vmlinux.lds.S1
8 files changed, 44 insertions, 8 deletions
diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c
index 3f11331..83335f3 100644
--- a/arch/parisc/kernel/cache.c
+++ b/arch/parisc/kernel/cache.c
@@ -304,10 +304,20 @@ void flush_dcache_page(struct page *page)
offset = (pgoff - mpnt->vm_pgoff) << PAGE_SHIFT;
addr = mpnt->vm_start + offset;
+ /* The TLB is the engine of coherence on parisc: The
+ * CPU is entitled to speculate any page with a TLB
+ * mapping, so here we kill the mapping then flush the
+ * page along a special flush only alias mapping.
+ * This guarantees that the page is no-longer in the
+ * cache for any process and nor may it be
+ * speculatively read in (until the user or kernel
+ * specifically accesses it, of course) */
+
+ flush_tlb_page(mpnt, addr);
if (old_addr == 0 || (old_addr & (SHMLBA - 1)) != (addr & (SHMLBA - 1))) {
__flush_cache_page(mpnt, addr, page_to_phys(page));
if (old_addr)
- printk(KERN_ERR "INEQUIVALENT ALIASES 0x%lx and 0x%lx in file %s\n", old_addr, addr, mpnt->vm_file ? mpnt->vm_file->f_path.dentry->d_name.name : "(null)");
+ printk(KERN_ERR "INEQUIVALENT ALIASES 0x%lx and 0x%lx in file %s\n", old_addr, addr, mpnt->vm_file ? (char *)mpnt->vm_file->f_path.dentry->d_name.name : "(null)");
old_addr = addr;
}
}
@@ -499,6 +509,7 @@ flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long
{
BUG_ON(!vma->vm_mm->context);
+ flush_tlb_page(vma, vmaddr);
__flush_cache_page(vma, vmaddr, page_to_phys(pfn_to_page(pfn)));
}
diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S
index ead8d2a..6f05944 100644
--- a/arch/parisc/kernel/entry.S
+++ b/arch/parisc/kernel/entry.S
@@ -692,6 +692,9 @@ ENTRY(fault_vector_11)
END(fault_vector_11)
#endif
+ /* Fault vector is separately protected and *must* be on its own page */
+ .align PAGE_SIZE
+ENTRY(end_fault_vector)
.import handle_interruption,code
.import do_cpu_irq_mask,code
diff --git a/arch/parisc/kernel/head.S b/arch/parisc/kernel/head.S
index 145c5e4..37aabd7 100644
--- a/arch/parisc/kernel/head.S
+++ b/arch/parisc/kernel/head.S
@@ -106,8 +106,9 @@ $bss_loop:
#endif
- /* Now initialize the PTEs themselves */
- ldo 0+_PAGE_KERNEL(%r0),%r3 /* Hardwired 0 phys addr start */
+ /* Now initialize the PTEs themselves. We use RWX for
+ * everything ... it will get remapped correctly later */
+ ldo 0+_PAGE_KERNEL_RWX(%r0),%r3 /* Hardwired 0 phys addr start */
ldi (1<<(KERNEL_INITIAL_ORDER-PAGE_SHIFT)),%r11 /* PFN count */
load32 PA(pg0),%r1
diff --git a/arch/parisc/kernel/module.c b/arch/parisc/kernel/module.c
index 6e81bb5..cedbbb8 100644
--- a/arch/parisc/kernel/module.c
+++ b/arch/parisc/kernel/module.c
@@ -61,8 +61,10 @@
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/bug.h>
+#include <linux/mm.h>
#include <linux/slab.h>
+#include <asm/pgtable.h>
#include <asm/unwind.h>
#if 0
@@ -214,7 +216,13 @@ void *module_alloc(unsigned long size)
{
if (size == 0)
return NULL;
- return vmalloc(size);
+ /* using RWX means less protection for modules, but it's
+ * easier than trying to map the text, data, init_text and
+ * init_data correctly */
+ return __vmalloc_node_range(size, 1, VMALLOC_START, VMALLOC_END,
+ GFP_KERNEL | __GFP_HIGHMEM,
+ PAGE_KERNEL_RWX, -1,
+ __builtin_return_address(0));
}
#ifndef CONFIG_64BIT
diff --git a/arch/parisc/kernel/pacache.S b/arch/parisc/kernel/pacache.S
index a858236..93ff3d9 100644
--- a/arch/parisc/kernel/pacache.S
+++ b/arch/parisc/kernel/pacache.S
@@ -817,10 +817,7 @@ ENTRY(purge_kernel_dcache_page)
.procend
ENDPROC(purge_kernel_dcache_page)
-
- .export flush_user_dcache_range_asm
-
-flush_user_dcache_range_asm:
+ENTRY(flush_user_dcache_range_asm)
.proc
.callinfo NO_CALLS
.entry
@@ -839,6 +836,7 @@ flush_user_dcache_range_asm:
.exit
.procend
+ENDPROC(flush_user_dcache_range_asm)
ENTRY(flush_kernel_dcache_range_asm)
.proc
diff --git a/arch/parisc/kernel/sys_parisc32.c b/arch/parisc/kernel/sys_parisc32.c
index 88a0ad1..dc9a624 100644
--- a/arch/parisc/kernel/sys_parisc32.c
+++ b/arch/parisc/kernel/sys_parisc32.c
@@ -228,3 +228,11 @@ asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo,
return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo,
((loff_t)lenhi << 32) | lenlo);
}
+
+asmlinkage long compat_sys_fanotify_mark(int fan_fd, int flags, u32 mask_hi,
+ u32 mask_lo, int fd,
+ const char __user *pathname)
+{
+ return sys_fanotify_mark(fan_fd, flags, ((u64)mask_hi << 32) | mask_lo,
+ fd, pathname);
+}
diff --git a/arch/parisc/kernel/syscall_table.S b/arch/parisc/kernel/syscall_table.S
index 4be85ee..a5b02ce 100644
--- a/arch/parisc/kernel/syscall_table.S
+++ b/arch/parisc/kernel/syscall_table.S
@@ -420,6 +420,12 @@
ENTRY_COMP(recvmmsg)
ENTRY_SAME(accept4) /* 320 */
ENTRY_SAME(prlimit64)
+ ENTRY_SAME(fanotify_init)
+ ENTRY_COMP(fanotify_mark)
+ ENTRY_COMP(clock_adjtime)
+ ENTRY_SAME(name_to_handle_at) /* 325 */
+ ENTRY_COMP(open_by_handle_at)
+ ENTRY_SAME(syncfs)
/* Nothing yet */
diff --git a/arch/parisc/kernel/vmlinux.lds.S b/arch/parisc/kernel/vmlinux.lds.S
index 2d9a5c7..e1a5584 100644
--- a/arch/parisc/kernel/vmlinux.lds.S
+++ b/arch/parisc/kernel/vmlinux.lds.S
@@ -137,6 +137,7 @@ SECTIONS
. = ALIGN(16384);
__init_begin = .;
INIT_TEXT_SECTION(16384)
+ . = ALIGN(PAGE_SIZE);
INIT_DATA_SECTION(16)
/* we have to discard exit text and such at runtime, not link time */
.exit.text :
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