diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-11-20 09:03:38 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-11-20 09:03:38 +0100 |
| commit | 90accd6fabf9b2fa2705945a4c601877a75d43bf (patch) | |
| tree | d393cb54f0228b1313139e4e14adf4f5cf236b59 /arch/x86/kernel/amd_iommu.c | |
| parent | b43d196c4d3fe46d6dda7c987c47792612b80b1b (diff) | |
| parent | ee2f6cc7f9ea2542ad46070ed62ba7aa04d08871 (diff) | |
Merge branch 'linus' into x86/memory-corruption-check
Diffstat (limited to 'arch/x86/kernel/amd_iommu.c')
| -rw-r--r-- | arch/x86/kernel/amd_iommu.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index a8fd9ebdc8e..e4899e0e878 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -50,7 +50,7 @@ static int dma_ops_unity_map(struct dma_ops_domain *dma_dom, /* returns !0 if the IOMMU is caching non-present entries in its TLB */ static int iommu_has_npcache(struct amd_iommu *iommu) { - return iommu->cap & IOMMU_CAP_NPCACHE; + return iommu->cap & (1UL << IOMMU_CAP_NPCACHE); } /**************************************************************************** @@ -536,6 +536,9 @@ static void dma_ops_free_addresses(struct dma_ops_domain *dom, { address >>= PAGE_SHIFT; iommu_area_free(dom->bitmap, address, pages); + + if (address >= dom->next_bit) + dom->need_flush = true; } /**************************************************************************** @@ -992,8 +995,10 @@ static void __unmap_single(struct amd_iommu *iommu, dma_ops_free_addresses(dma_dom, dma_addr, pages); - if (amd_iommu_unmap_flush) + if (amd_iommu_unmap_flush || dma_dom->need_flush) { iommu_flush_pages(iommu, dma_dom->domain.id, dma_addr, size); + dma_dom->need_flush = false; + } } /* |