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| author | Jean-Philippe Brucker <jean-philippe@linaro.org> | 2020-05-20 17:22:03 +0200 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2020-05-27 14:35:41 +0200 |
| commit | da656a042568ffbc30881c43a832277f275eea4a (patch) | |
| tree | 71e61601cc1000350a6ed584bb5ab63168f85269 /drivers/iommu | |
| parent | 0b2527a654190a987d45e2cc9e5c6946eea11fc5 (diff) | |
| download | linux-stable-da656a042568ffbc30881c43a832277f275eea4a.tar.gz linux-stable-da656a042568ffbc30881c43a832277f275eea4a.tar.bz2 linux-stable-da656a042568ffbc30881c43a832277f275eea4a.zip | |
iommu/vt-d: Use pci_ats_supported()
The pci_ats_supported() helper checks if a device supports ATS and is
allowed to use it. By checking the ATS capability it also integrates the
pci_ats_disabled() check from pci_ats_init(). Simplify the vt-d checks.
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Acked-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20200520152201.3309416-5-jean-philippe@linaro.org
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/intel-iommu.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 34e08fa2ce3a..5dea3042820b 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -1454,8 +1454,7 @@ static void iommu_enable_dev_iotlb(struct device_domain_info *info) !pci_reset_pri(pdev) && !pci_enable_pri(pdev, 32)) info->pri_enabled = 1; #endif - if (!pdev->untrusted && info->ats_supported && - pci_ats_page_aligned(pdev) && + if (info->ats_supported && pci_ats_page_aligned(pdev) && !pci_enable_ats(pdev, VTD_PAGE_SHIFT)) { info->ats_enabled = 1; domain_update_iotlb(info->domain); @@ -2611,10 +2610,8 @@ static struct dmar_domain *dmar_insert_one_dev_info(struct intel_iommu *iommu, if (dev && dev_is_pci(dev)) { struct pci_dev *pdev = to_pci_dev(info->dev); - if (!pdev->untrusted && - !pci_ats_disabled() && - ecap_dev_iotlb_support(iommu->ecap) && - pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_ATS) && + if (ecap_dev_iotlb_support(iommu->ecap) && + pci_ats_supported(pdev) && dmar_find_matched_atsr_unit(pdev)) info->ats_supported = 1; |