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| author | Jean-Philippe Brucker <jean-philippe@linaro.org> | 2021-04-01 18:47:12 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2021-04-07 11:54:28 +0300 |
| commit | 34b48c704d194738eef0893aa06e412bdc8a972f (patch) | |
| tree | 1dda798acf14d87c1f3358c6202e5311158eba13 /security/inode.c | |
| parent | 434b73e61cc65cdd26618af6fa4736c2ba1eb29b (diff) | |
| download | linux-34b48c704d194738eef0893aa06e412bdc8a972f.tar.xz | |
iommu: Separate IOMMU_DEV_FEAT_IOPF from IOMMU_DEV_FEAT_SVA
Some devices manage I/O Page Faults (IOPF) themselves instead of relying
on PCIe PRI or Arm SMMU stall. Allow their drivers to enable SVA without
mandating IOMMU-managed IOPF. The other device drivers now need to first
enable IOMMU_DEV_FEAT_IOPF before enabling IOMMU_DEV_FEAT_SVA. Enabling
IOMMU_DEV_FEAT_IOPF on its own doesn't have any effect visible to the
device driver, it is used in combination with other features.
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Link: https://lore.kernel.org/r/20210401154718.307519-4-jean-philippe@linaro.org
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'security/inode.c')
0 files changed, 0 insertions, 0 deletions