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Commit fa3b6dcd authored by Yu Zhao's avatar Yu Zhao Committed by David Woodhouse
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VT-d: fix invalid domain id for KVM context flush 



The domain->id is a sequence number associated with the KVM guest
and should not be used for the context flush. This patch replaces
the domain->id with a proper id value for both bare metal and KVM.

Signed-off-by: default avatarYu Zhao <yu.zhao@intel.com>
Acked-by: default avatarWeidong Han <weidong.han@intel.com>
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent aed5d5f4

drivers/pci/intel-iommu.c

+1 −1
Original line number Diff line number Diff line
@@ -1429,7 +1429,7 @@ static int domain_context_mapping_one(struct dmar_domain *domain, int segment, 
	domain_flush_cache(domain, context, sizeof(*context));



	/* it's a non-present to present mapping */

	if (iommu->flush.flush_context(iommu, domain->id,

	if (iommu->flush.flush_context(iommu, id,

		(((u16)bus) << 8) | devfn, DMA_CCMD_MASK_NOBIT,

		DMA_CCMD_DEVICE_INVL, 1))

		iommu_flush_write_buffer(iommu);