Title: [9832] trunk/include/asm-generic/cacheflush.h: asm-generic/cacheflush.h: flush icache when copying to user pages
- Revision
- 9832
- Author
- vapier
- Date
- 2011-04-13 19:46:29 -0400 (Wed, 13 Apr 2011)
Log Message
asm-generic/cacheflush.h: flush icache when copying to user pages
The copy_to_user_page() function is supposed to flush the icache on the
memory that was written, but the current asm-generic version lacks that
logic. While normally it isn't a big deal as the asm-generic version of
icache flushing is a stub, it is a deal for ports that want to use the
asm-generic version as a baseline and then overlay its own specific parts
(like icache flushing).
Modified Paths
Diff
Modified: trunk/include/asm-generic/cacheflush.h (9831 => 9832)
--- trunk/include/asm-generic/cacheflush.h 2011-04-13 23:25:29 UTC (rev 9831)
+++ trunk/include/asm-generic/cacheflush.h 2011-04-13 23:46:29 UTC (rev 9832)
@@ -24,7 +24,10 @@
#define flush_cache_vunmap(start, end) do { } while (0)
#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
- memcpy(dst, src, len)
+ do { \
+ memcpy(dst, src, len); \
+ flush_icache_user_range(vma, page, vaddr, len); \
+ } while (0)
#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
memcpy(dst, src, len)
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