From 7c204426b81822ba768b3a5e5393b1489917fb84 Mon Sep 17 00:00:00 2001 From: Lu Baolu Date: Mon, 4 Nov 2024 09:40:21 +0800 Subject: iommu/vt-d: Add domain_alloc_paging support Add the domain_alloc_paging callback for domain allocation using the iommu_paging_domain_alloc() interface. Signed-off-by: Lu Baolu Reviewed-by: Jason Gunthorpe Link: https://lore.kernel.org/r/20241021085125.192333-2-baolu.lu@linux.intel.com Signed-off-by: Joerg Roedel --- drivers/iommu/intel/iommu.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'drivers/iommu/intel/iommu.c') diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index 9f6b0780f2ef..4803e0cb8279 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -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, -- cgit v1.2.3