tmakin/ack-tegra
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

iommu/vt-d: Remove mm->pasid in intel_sva_bind_mm()

Browse Source 
The pasid is passed in as a parameter through .set_dev_pasid() callback.
Thus, intel_sva_bind_mm() can directly use it instead of retrieving the
pasid value from mm->pasid.

Suggested-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Tina Zhang <tina.zhang@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20231027000525.1278806-3-tina.zhang@intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Tina Zhang
2023-10-27 08:05:21 +08:00
committed by Joerg Roedel
parent 8f23f5dba6
commit 5c79705d7c
1 changed files with 7 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/iommu/intel/svm.c
+7 -7
View File
@@ -316,21 +316,22 @@ out:
}
static int intel_svm_bind_mm(struct intel_iommu *iommu, struct device *dev,
struct mm_struct *mm)
struct iommu_domain *domain, ioasid_t pasid)
{
struct device_domain_info *info = dev_iommu_priv_get(dev);
struct mm_struct *mm = domain->mm;
struct intel_svm_dev *sdev;
struct intel_svm *svm;
unsigned long sflags;
int ret = 0;
svm = pasid_private_find(mm->pasid);
svm = pasid_private_find(pasid);
if (!svm) {
svm = kzalloc(sizeof(*svm), GFP_KERNEL);
if (!svm)
return -ENOMEM;
svm->pasid = mm->pasid;
svm->pasid = pasid;
svm->mm = mm;
INIT_LIST_HEAD_RCU(&svm->devs);
@@ -368,7 +369,7 @@ static int intel_svm_bind_mm(struct intel_iommu *iommu, struct device *dev,
/* Setup the pasid table: */
sflags = cpu_feature_enabled(X86_FEATURE_LA57) ? PASID_FLAG_FL5LP : 0;
ret = intel_pasid_setup_first_level(iommu, dev, mm->pgd, mm->pasid,
ret = intel_pasid_setup_first_level(iommu, dev, mm->pgd, pasid,
FLPT_DEFAULT_DID, sflags);
if (ret)
goto free_sdev;
@@ -382,7 +383,7 @@ free_sdev:
free_svm:
if (list_empty(&svm->devs)) {
mmu_notifier_unregister(&svm->notifier, mm);
pasid_private_remove(mm->pasid);
pasid_private_remove(pasid);
kfree(svm);
}
@@ -822,9 +823,8 @@ static int intel_svm_set_dev_pasid(struct iommu_domain *domain,
{
struct device_domain_info *info = dev_iommu_priv_get(dev);
struct intel_iommu *iommu = info->iommu;
struct mm_struct *mm = domain->mm;
return intel_svm_bind_mm(iommu, dev, mm);
return intel_svm_bind_mm(iommu, dev, domain, pasid);
}
static void intel_svm_domain_free(struct iommu_domain *domain)