diff options
| author | Jacob Pan <jacob.jun.pan@linux.intel.com> | 2023-03-22 13:07:57 -0700 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2023-03-31 10:03:21 +0200 |
| commit | 760f41d182ec94a651977e70045fd61b57973408 (patch) | |
| tree | b076df1c1de1c0848e49254331f073823ab4de52 /drivers/iommu/intel/dmar.c | |
| parent | c33fcc13ee0d02efe5729588e8fba8b899c8879a (diff) | |
iommu/vt-d: Remove virtual command interface
Virtual command interface was introduced to allow using host PASIDs
inside VMs. It is unused and abandoned due to architectural change.
With this patch, we can safely remove this feature and the related helpers.
Link: https://lore.kernel.org/r/20230210230206.3160144-2-jacob.jun.pan@linux.intel.com
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20230322200803.869130-2-jacob.jun.pan@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/intel/dmar.c')
| -rw-r--r-- | drivers/iommu/intel/dmar.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/iommu/intel/dmar.c b/drivers/iommu/intel/dmar.c index 6acfe879589c..0f348439ef0e 100644 --- a/drivers/iommu/intel/dmar.c +++ b/drivers/iommu/intel/dmar.c @@ -993,8 +993,6 @@ static int map_iommu(struct intel_iommu *iommu, struct dmar_drhd_unit *drhd) warn_invalid_dmar(phys_addr, " returns all ones"); goto unmap; } - if (ecap_vcs(iommu->ecap)) - iommu->vccap = dmar_readq(iommu->reg + DMAR_VCCAP_REG); /* the registers might be more than one page */ map_size = max_t(int, ecap_max_iotlb_offset(iommu->ecap), |