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iommu/vt-d: Add domain_alloc_paging support

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Add the domain_alloc_paging callback for domain allocation using the
iommu_paging_domain_alloc() interface.

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20241021085125.192333-2-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Lu Baolu 2024-11-04 09:40:21 +08:00 • committed by Joerg Roedel
parent 8e929cb546
commit 7c204426b8
1 changed files with 14 additions and 0 deletions
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14
drivers/iommu/intel/iommu.c
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@ -4590,6 +4590,19 @@ static struct iommu_domain identity_domain = {
},
};
static struct iommu_domain *intel_iommu_domain_alloc_paging(struct device *dev)
{
struct dmar_domain *dmar_domain;
bool first_stage;
first_stage = first_level_by_default(0);
dmar_domain = paging_domain_alloc(dev, first_stage);
if (IS_ERR(dmar_domain))
return ERR_CAST(dmar_domain);
return &dmar_domain->domain;
}
const struct iommu_ops intel_iommu_ops = {
.blocked_domain = &blocking_domain,
.release_domain = &blocking_domain,
@ -4599,6 +4612,7 @@ const struct iommu_ops intel_iommu_ops = {
.domain_alloc = intel_iommu_domain_alloc,
.domain_alloc_user = intel_iommu_domain_alloc_user,
.domain_alloc_sva = intel_svm_domain_alloc,
.domain_alloc_paging = intel_iommu_domain_alloc_paging,
.probe_device = intel_iommu_probe_device,
.release_device = intel_iommu_release_device,
.get_resv_regions = intel_iommu_get_resv_regions,