diff options
| author | Nicolin Chen <nicolinc@nvidia.com> | 2024-08-29 15:34:39 -0700 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2024-08-30 15:28:25 +0100 |
| commit | a9d40285bdefef700ebc7551ef79d2f3e4559e73 (patch) | |
| tree | 89d7a6d8e599af70aad9ed2a45ca03d8d389529f /drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | |
| parent | f59e854907128ec3d4a82b7fc4efe9be8da2e78e (diff) | |
iommu/tegra241-cmdqv: Limit CMDs for VCMDQs of a guest owned VINTF
When VCMDQs are assigned to a VINTF owned by a guest (HYP_OWN bit unset),
only TLB and ATC invalidation commands are supported by the VCMDQ HW. So,
implement the new cmdq->supports_cmd op to scan the input cmd in order to
make sure that it is supported by the selected queue.
Note that the guest VM shouldn't have HYP_OWN bit being set regardless of
guest kernel driver writing it or not, i.e. the hypervisor running in the
host OS should wire this bit to zero when trapping a write access to this
VINTF_CONFIG register from a guest kernel.
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Link: https://lore.kernel.org/r/8160292337059b91271045800e5c62f7295e2c24.1724970714.git.nicolinc@nvidia.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h')
| -rw-r--r-- | drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h index 4deb40cfe2e1..4d5af5ac8a63 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h @@ -642,7 +642,8 @@ struct arm_smmu_strtab_cfg { struct arm_smmu_impl_ops { int (*device_reset)(struct arm_smmu_device *smmu); void (*device_remove)(struct arm_smmu_device *smmu); - struct arm_smmu_cmdq *(*get_secondary_cmdq)(struct arm_smmu_device *smmu); + struct arm_smmu_cmdq *(*get_secondary_cmdq)( + struct arm_smmu_device *smmu, struct arm_smmu_cmdq_ent *ent); }; /* An SMMUv3 instance */ |