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| author | Robin Murphy <robin.murphy@arm.com> | 2023-05-05 00:10:55 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2023-05-22 18:38:44 +0300 |
| commit | 4a20ce0ff68eb6fc4b1e8f25139c93b312f21229 (patch) | |
| tree | d059ba3b2c276e964e70da68f0b17ef70ecd7e62 /drivers/iommu/intel/iommu.c | |
| parent | 5d62bacc059bb4f783e1d2ad88874abb6056f404 (diff) | |
| download | linux-4a20ce0ff68eb6fc4b1e8f25139c93b312f21229.tar.xz | |
iommu: Add a capability for flush queue support
Passing a special type to domain_alloc to indirectly query whether flush
queues are a worthwhile optimisation with the given driver is a bit
clunky, and looking increasingly anachronistic. Let's put that into an
explicit capability instead.
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Tested-by: Jerry Snitselaar <jsnitsel@redhat.com> # amd, intel, smmu-v3
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/f0086a93dbccb92622e1ace775846d81c1c4b174.1683233867.git.robin.murphy@arm.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/intel/iommu.c')
| -rw-r--r-- | drivers/iommu/intel/iommu.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index b871a6afd803..ff923298f8ed 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -4369,6 +4369,7 @@ static bool intel_iommu_capable(struct device *dev, enum iommu_cap cap) switch (cap) { case IOMMU_CAP_CACHE_COHERENCY: + case IOMMU_CAP_DEFERRED_FLUSH: return true; case IOMMU_CAP_PRE_BOOT_PROTECTION: return dmar_platform_optin(); |