diff options
| author |   Carmelo Amoroso <carmelo73@gmail.com> | 2008-01-07 13:50:18 +0900 |
|---|---|---|
| committer |   Paul Mundt <lethal@linux-sh.org> | 2008-01-07 13:50:18 +0900 |
| commit | 844b43adba74d97f15e56b103c97bfcccaa01aa6 (patch) | |
| tree | b744ec1d5d8f7d639274a18f53f653fcf1b398f8 /include | |
| parent | Linux 2.6.24-rc7 (diff) | |
| download | linux-dev-844b43adba74d97f15e56b103c97bfcccaa01aa6.tar.xz linux-dev-844b43adba74d97f15e56b103c97bfcccaa01aa6.zip | |
sh: Fix argument page dcache flushing regression.
In the do_execve() path, argument page handling used to explicitly call
flush_dcache_page() for each page, this has since been reworked and
uses flush_kernel_dcache_page() instead, which is presently a nop.
Doing a simple modprobe/rmmod in a loop under busybox consistently
manages to crash without providing a sane flush_kernel_dcache_page()
implementation, so, plug in a simple implementation.
Signed-off-by: Carmelo Amoroso <carmelo73@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-sh/cacheflush.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/asm-sh/cacheflush.h b/include/asm-sh/cacheflush.h index 9d528ada3c14..e034c3604111 100644 --- a/include/asm-sh/cacheflush.h +++ b/include/asm-sh/cacheflush.h @@ -43,6 +43,12 @@ extern void __flush_purge_region(void *start, int size); extern void __flush_invalidate_region(void *start, int size); #endif +#define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE +static inline void flush_kernel_dcache_page(struct page *page) +{ + flush_dcache_page(page); +} + #if defined(CONFIG_CPU_SH4) && !defined(CONFIG_CACHE_OFF) extern void copy_to_user_page(struct vm_area_struct *vma, struct page *page, unsigned long vaddr, void *dst, const void *src, |