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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>
This commit is contained in:
Joerg Roedel 2008-11-17 19:11:46 +01:00
parent 695b5676c7
commit 8501c45cc3
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kernel/amd_iommu.c
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@ -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;
}