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authorCarmelo Amoroso <carmelo73@gmail.com>2008-01-07 13:50:18 +0900
committerPaul Mundt <lethal@linux-sh.org>2008-01-07 13:50:18 +0900
commit844b43adba74d97f15e56b103c97bfcccaa01aa6 (patch)
treeb744ec1d5d8f7d639274a18f53f653fcf1b398f8 /include/asm-sh
parent3ce54450461bad18bbe1f9f5aa3ecd2f8e8d1235 (diff)
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/asm-sh')
-rw-r--r--include/asm-sh/cacheflush.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/asm-sh/cacheflush.h b/include/asm-sh/cacheflush.h
index 9d528ada3c1..e034c360411 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,