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| author | Richard Purdie <rpurdie@rpsys.net> | 2006-12-30 16:08:50 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2006-12-30 17:05:08 +0000 |
| commit | 1c9d3df5e88ad7db23f5b22f4341c39722a904a4 (patch) | |
| tree | dbabefd52a5f8a5f35216bda33f29e4b9b398569 /include/asm-arm | |
| parent | b0b1d60a64054697ef828e0565f006cc0f823590 (diff) | |
| download | op-kernel-dev-1c9d3df5e88ad7db23f5b22f4341c39722a904a4.zip op-kernel-dev-1c9d3df5e88ad7db23f5b22f4341c39722a904a4.tar.gz | |
[ARM] 4078/1: Fix ARM copypage cache coherency problems
If PG_dcache_dirty is set for a page, we need to flush the source page
before performing any copypage operation using a different virtual address.
This fixes the copypage implementations for XScale, StrongARM and ARMv6.
This patch fixes segmentation faults seen in the dynamic linker under
the usage patterns in glibc 2.4/2.5.
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'include/asm-arm')
| -rw-r--r-- | include/asm-arm/cacheflush.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/asm-arm/cacheflush.h b/include/asm-arm/cacheflush.h index 378a3a2..d510495 100644 --- a/include/asm-arm/cacheflush.h +++ b/include/asm-arm/cacheflush.h @@ -355,6 +355,8 @@ extern void flush_ptrace_access(struct vm_area_struct *vma, struct page *page, */ extern void flush_dcache_page(struct page *); +extern void __flush_dcache_page(struct address_space *mapping, struct page *page); + #define flush_dcache_mmap_lock(mapping) \ write_lock_irq(&(mapping)->tree_lock) #define flush_dcache_mmap_unlock(mapping) \ |
