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authorJoerg Roedel <joerg.roedel@amd.com>2008-11-17 18:11:46 (GMT)
committerJoerg Roedel <joerg.roedel@amd.com>2008-11-18 14:44:43 (GMT)
commit8501c45cc32c311ae755a2d5ac8c4a5f04908d42 (patch)
treec2f200201b57a4bbd72c2083bba5242c00eecc5c /arch
parent695b5676c727d80921a2dc8737d5b3322222db85 (diff)
downloadlinux-8501c45cc32c311ae755a2d5ac8c4a5f04908d42.tar.xz
AMD IOMMU: check for next_bit also in unmapped area
Impact: fix possible use of stale IO/TLB entries Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/amd_iommu.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 331b318..e4899e0 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -537,7 +537,7 @@ static void dma_ops_free_addresses(struct dma_ops_domain *dom,
address >>= PAGE_SHIFT;
iommu_area_free(dom->bitmap, address, pages);
- if (address + pages >= dom->next_bit)
+ if (address >= dom->next_bit)
dom->need_flush = true;
}