Author: Vegard Nossum <vegard.nossum@xxxxxxxxx> AuthorDate: Sat, 21 Feb 2009 13:52:37 +0100 Commit: Vegard Nossum <vegard.nossum@xxxxxxxxx> CommitDate: Sun, 22 Feb 2009 12:36:05 +0100 kmemcheck: add hooks for page- and sg-dma-mappings This is needed for page allocator support to prevent false positives when accessing pages which are dma-mapped. Signed-off-by: Vegard Nossum <vegard.nossum@xxxxxxxxx> --- arch/x86/include/asm/dma-mapping.h | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/arch/x86/include/asm/dma-mapping.h b/arch/x86/include/asm/dma-mapping.h index 830bb0e..713a002 100644 --- a/arch/x86/include/asm/dma-mapping.h +++ b/arch/x86/include/asm/dma-mapping.h @@ -117,7 +117,12 @@ dma_map_sg(struct device *hwdev, struct scatterlist *sg, { struct dma_mapping_ops *ops = get_dma_ops(hwdev); + struct scatterlist *s; + int i; + BUG_ON(!valid_dma_direction(direction)); + for_each_sg(sg, s, nents, i) + kmemcheck_mark_initialized(sg_virt(s), s->length); return ops->map_sg(hwdev, sg, nents, direction); } @@ -215,6 +220,7 @@ static inline dma_addr_t dma_map_page(struct device *dev, struct page *page, struct dma_mapping_ops *ops = get_dma_ops(dev); BUG_ON(!valid_dma_direction(direction)); + kmemcheck_mark_initialized(page_address(page) + offset, size); return ops->map_single(dev, page_to_phys(page) + offset, size, direction); } -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html