iommu/vt-d: Add present bit check in pasid entry setup helpers

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The helper functions should not modify the pasid entries which are still
in use. Add a check against present bit.

Signed-off-by: Liu Yi L <yi.l.liu@intel.com>
Link: https://lore.kernel.org/r/20210817042425.1784279-1-yi.l.liu@intel.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210818134852.1847070-10-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

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Liu Yi L 2021-08-18 21:48:52 +08:00 • committed by Joerg Roedel

parent 8123b0b868

commit 423d39d851

1 changed files with 16 additions and 0 deletions

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drivers/iommu/intel/pasid.c

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