Commit 9bc18d28 authored by Yi Liu's avatar Yi Liu Committed by Joerg Roedel
Browse files

iommu/vt-d: Make identity_domain_set_dev_pasid() to handle domain replacement 



Let identity_domain_set_dev_pasid() call the pasid replace helpers hence
be able to do domain replacement.

Reviewed-by: default avatarLu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: default avatarKevin Tian <kevin.tian@intel.com>
Signed-off-by: default avatarYi Liu <yi.l.liu@intel.com>
Link: https://lore.kernel.org/r/20241107122234.7424-11-yi.l.liu@intel.com


Signed-off-by: default avatarLu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent cfb31f19

drivers/iommu/intel/iommu.c

+18 −1
Original line number Diff line number Diff line
@@ -1778,6 +1778,17 @@ static int domain_setup_second_level(struct intel_iommu *iommu, 
						pasid);

}



static int domain_setup_passthrough(struct intel_iommu *iommu,

				    struct device *dev, ioasid_t pasid,

				    struct iommu_domain *old)

{

	if (!old)

		return intel_pasid_setup_pass_through(iommu, dev, pasid);

	return intel_pasid_replace_pass_through(iommu, dev,

						iommu_domain_did(old, iommu),

						pasid);

}



static int domain_setup_first_level(struct intel_iommu *iommu,

				    struct dmar_domain *domain,

				    struct device *dev,
@@ -4423,11 +4434,17 @@ static int identity_domain_set_dev_pasid(struct iommu_domain *domain, 
{

	struct device_domain_info *info = dev_iommu_priv_get(dev);

	struct intel_iommu *iommu = info->iommu;

	int ret;



	if (!pasid_supported(iommu) || dev_is_real_dma_subdevice(dev))

		return -EOPNOTSUPP;



	return intel_pasid_setup_pass_through(iommu, dev, pasid);

	ret = domain_setup_passthrough(iommu, dev, pasid, old);

	if (ret)

		return ret;



	domain_remove_dev_pasid(old, dev, pasid);

	return 0;

}



static struct iommu_domain identity_domain = {