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iommu/vt-d: Update iotlb in nested domain attach

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Should call domain_update_iotlb() to update the has_iotlb_device flag
of the domain after attaching device to nested domain. Without it, this
flag is not set properly and would result in missing device TLB flush.

Fixes: 9838f2bb6b ("iommu/vt-d: Set the nested domain to a device")
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20240208082307.15759-5-yi.l.liu@intel.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Yi Liu 2024-02-19 19:15:55 +08:00 committed by Joerg Roedel
parent 8219853011
commit 29e10487d6
3 changed files with 4 additions and 3 deletions
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4
drivers/iommu/intel/iommu.c
View file

@ -396,8 +396,6 @@ static int domain_update_device_node(struct dmar_domain *domain)
return nid;
}
static void domain_update_iotlb(struct dmar_domain *domain);
/* Return the super pagesize bitmap if supported. */
static unsigned long domain_super_pgsize_bitmap(struct dmar_domain *domain)
{
@ -1218,7 +1216,7 @@ domain_lookup_dev_info(struct dmar_domain *domain,
return NULL;
}
static void domain_update_iotlb(struct dmar_domain *domain)
void domain_update_iotlb(struct dmar_domain *domain)
{
struct dev_pasid_info *dev_pasid;
struct device_domain_info *info;

1
drivers/iommu/intel/iommu.h
View file

@ -1066,6 +1066,7 @@ int qi_submit_sync(struct intel_iommu *iommu, struct qi_desc *desc,
*/
#define QI_OPT_WAIT_DRAIN BIT(0)
void domain_update_iotlb(struct dmar_domain *domain);
int domain_attach_iommu(struct dmar_domain *domain, struct intel_iommu *iommu);
void domain_detach_iommu(struct dmar_domain *domain, struct intel_iommu *iommu);
void device_block_translation(struct device *dev);

2
drivers/iommu/intel/nested.c
View file

@ -65,6 +65,8 @@ static int intel_nested_attach_dev(struct iommu_domain *domain,
list_add(&info->link, &dmar_domain->devices);
spin_unlock_irqrestore(&dmar_domain->lock, flags);
domain_update_iotlb(dmar_domain);
return 0;
}