2.6.30-stable review patch. If anyone has any objections, please let us know. ------------------ From: Nicolas Pitre commit 73be1591579084a8103a7005dd3172f3e9dd7362 upstream. Without this, the default implementation is a no op which is completely wrong with a VIVT cache, and usage of sg_copy_buffer() produces unpredictable results. Tested-by: Sebastian Andrzej Siewior Signed-off-by: Nicolas Pitre Signed-off-by: Russell King Signed-off-by: Greg Kroah-Hartman --- arch/arm/include/asm/cacheflush.h | 8 ++++++++ 1 file changed, 8 insertions(+) --- a/arch/arm/include/asm/cacheflush.h +++ b/arch/arm/include/asm/cacheflush.h @@ -429,6 +429,14 @@ static inline void flush_anon_page(struc __flush_anon_page(vma, page, vmaddr); } +#define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE +static inline void flush_kernel_dcache_page(struct page *page) +{ + /* highmem pages are always flushed upon kunmap already */ + if ((cache_is_vivt() || cache_is_vipt_aliasing()) && !PageHighMem(page)) + __cpuc_flush_dcache_page(page_address(page)); +} + #define flush_dcache_mmap_lock(mapping) \ spin_lock_irq(&(mapping)->tree_lock) #define flush_dcache_mmap_unlock(mapping) \ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/