iommu/vt-d: Invalidate PASID cache when root/context entry changed
[ Upstream commit c0474a60 ] When the Intel IOMMU is operating in the scalable mode, some information from the root and context table may be used to tag entries in the PASID cache. Software should invalidate the PASID-cache when changing root or context table entries. Suggested-by:Ashok Raj <ashok.raj@intel.com> Fixes: 7373a8cc ("iommu/vt-d: Setup context and enable RID2PASID support") Signed-off-by:
Lu Baolu <baolu.lu@linux.intel.com> Link: https://lore.kernel.org/r/20210320025415.641201-4-baolu.lu@linux.intel.com Signed-off-by:
Joerg Roedel <jroedel@suse.de> Signed-off-by:
Sasha Levin <sashal@kernel.org>
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