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: Yu Zhao <yu.zhao@intel.com>
Acked-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index d3edd6a..d6f4ee5 100644 (file)
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -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);