The iova->pfn_lo should be converted to VTD page address before it's passed to iommu_flush_dev_iotlb(). This issue may cause DMA failure on PAGE_SIZE>VTD_PAGE_SIZE platforms e.g. ia64 platforms. Signed-off-by: Fenghua Yu <fenghua.yu@xxxxxxxxx> --- drivers/pci/intel-iommu.c | 2 +- 1 files changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c index bec29ed..54ee63d 100644 --- a/drivers/pci/intel-iommu.c +++ b/drivers/pci/intel-iommu.c @@ -2647,7 +2654,7 @@ static void flush_unmaps(void) mask = (iova->pfn_hi - iova->pfn_lo + 1) << PAGE_SHIFT; mask = ilog2(mask >> VTD_PAGE_SHIFT); iommu_flush_dev_iotlb(deferred_flush[i].domain[j], - iova->pfn_lo << PAGE_SHIFT, mask); + iova->pfn_lo << VTD_PAGE_SHIFT, mask); __free_iova(&deferred_flush[i].domain[j]->iovad, iova); } deferred_flush[i].next = 0; -- To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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