diff options
| author | Yi Liu <yi.l.liu@intel.com> | 2024-11-08 10:13:52 +0800 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2024-11-08 14:04:49 +0100 |
| commit | b45a3777ceabbe08ab7a6e97f258191c07cbab8d (patch) | |
| tree | 7056c0308355bea5010883c2577d0853df9d3acc /drivers/iommu/intel/iommu.c | |
| parent | c43e1ccdebf2c950545fdf12c5796ad6f7bad7ee (diff) | |
iommu: Pass old domain to set_dev_pasid op
To support domain replacement for pasid, the underlying iommu driver needs
to know the old domain hence be able to clean up the existing attachment.
It would be much convenient for iommu layer to pass down the old domain.
Otherwise, iommu drivers would need to track domain for pasids by
themselves, this would duplicate code among the iommu drivers. Or iommu
drivers would rely group->pasid_array to get domain, which may not always
the correct one.
Suggested-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Nicolin Chen <nicolinc@nvidia.com>
Reviewed-by: Vasant Hegde <vasant.hegde@amd.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Link: https://lore.kernel.org/r/20241107122234.7424-2-yi.l.liu@intel.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.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 | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index e2b3aa601191..2d1d208d5125 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -4070,7 +4070,8 @@ static void intel_iommu_remove_dev_pasid(struct device *dev, ioasid_t pasid, } static int intel_iommu_set_dev_pasid(struct iommu_domain *domain, - struct device *dev, ioasid_t pasid) + struct device *dev, ioasid_t pasid, + struct iommu_domain *old) { struct device_domain_info *info = dev_iommu_priv_get(dev); struct dmar_domain *dmar_domain = to_dmar_domain(domain); @@ -4356,7 +4357,8 @@ static int identity_domain_attach_dev(struct iommu_domain *domain, struct device } static int identity_domain_set_dev_pasid(struct iommu_domain *domain, - struct device *dev, ioasid_t pasid) + struct device *dev, ioasid_t pasid, + struct iommu_domain *old) { struct device_domain_info *info = dev_iommu_priv_get(dev); struct intel_iommu *iommu = info->iommu; |