diff options
| author | Jacob Pan <[email protected]> | 2021-03-02 02:13:57 -0800 |
|---|---|---|
| committer | Joerg Roedel <[email protected]> | 2021-03-18 11:42:46 +0100 |
| commit | f68c7f539b6e9712e941212ab95a1feb5a0bf3b3 (patch) | |
| tree | 4794fc37921f6c6f1ea78febf86ef016bf7bde18 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | 6ca69e5841f01ccbfa45e56577e1b33e14e53504 (diff) | |
iommu/vt-d: Enable write protect for supervisor SVM
Write protect bit, when set, inhibits supervisor writes to the read-only
pages. In supervisor shared virtual addressing (SVA), where page tables
are shared between CPU and DMA, IOMMU PASID entry WPE bit should match
CR0.WP bit in the CPU.
This patch sets WPE bit for supervisor PASIDs if CR0.WP is set.
Signed-off-by: Sanjay Kumar <[email protected]>
Signed-off-by: Jacob Pan <[email protected]>
Acked-by: Lu Baolu <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Joerg Roedel <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions