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authorLu Baolu <baolu.lu@linux.intel.com>2019-03-20 09:58:34 +0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-04-20 09:17:02 +0200
commitaca4bd1a1cc6084f74f2dba955270629a3fbf7b9 (patch)
treea3bd2c68c3c0f4fd36b13797bbcec7e8b6aa78d1
parentd965161274983e34caf8f38af287f0a1e2adbb27 (diff)
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iommu/vt-d: Save the right domain ID used by hardware
[ Upstream commit 84c11e4df5aa4955acaa441f0cf1cb2e50daf64b ] The driver sets a default domain id (FLPT_DEFAULT_DID) in the first level only pasid entry, but saves a different domain id in @sdev->did. The value saved in @sdev->did will be used to invalidate the translation caches. Hence, the driver might result in invalidating the caches with a wrong domain id. Cc: Ashok Raj <ashok.raj@intel.com> Cc: Jacob Pan <jacob.jun.pan@linux.intel.com> Fixes: 1c4f88b7f1f92 ("iommu/vt-d: Shared virtual address in scalable mode") Signed-off-by: Liu Yi L <yi.l.liu@intel.com> Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by: Joerg Roedel <jroedel@suse.de> Signed-off-by: Sasha Levin <sashal@kernel.org>
-rw-r--r--drivers/iommu/intel-iommu.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 68a21c49c562..53b1fbadc496 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -5331,7 +5331,7 @@ int intel_iommu_enable_pasid(struct intel_iommu *iommu, struct intel_svm_dev *sd
ctx_lo = context[0].lo;
- sdev->did = domain->iommu_did[iommu->seq_id];
+ sdev->did = FLPT_DEFAULT_DID;
sdev->sid = PCI_DEVID(info->bus, info->devfn);
if (!(ctx_lo & CONTEXT_PASIDE)) {