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Commit 48739afa authored by Lu Baolu's avatar Lu Baolu Committed by Joerg Roedel
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iommu/vt-d: Get domain ID before clear pasid entry 



After tearing down a pasid entry, the domain id is used to
invalidate the translation caches. Retrieve the domain id
from the pasid entry value before clearing the pasid entry.
Otherwise, we will always use domain id 0.

Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: default avatarLiu Yi L <yi.l.liu@intel.com>
Fixes: 6f7db75e ("iommu/vt-d: Add second level page table interface")
Signed-off-by: default avatarLu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent c56cba5d

drivers/iommu/intel-pasid.c

+1 −1
Original line number Diff line number Diff line
@@ -466,8 +466,8 @@ void intel_pasid_tear_down_entry(struct intel_iommu *iommu, 
	if (WARN_ON(!pte))

		return;



	intel_pasid_clear_entry(dev, pasid);

	did = pasid_get_domain_id(pte);

	intel_pasid_clear_entry(dev, pasid);



	if (!ecap_coherent(iommu->ecap))

		clflush_cache_range(pte, sizeof(*pte));