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Thu, 13 Feb 2020 08:52:12 -0800 (PST) From: Jean-Philippe Brucker To: bhelgaas@google.com, will@kernel.org, robh+dt@kernel.org, lorenzo.pieralisi@arm.com, joro@8bytes.org, baolu.lu@linux.intel.com, linux-doc@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-acpi@vger.kernel.org, iommu@lists.linux-foundation.org Subject: [PATCH 08/11] iommu/vt-d: Use pci_ats_supported() Date: Thu, 13 Feb 2020 17:50:46 +0100 Message-Id: <20200213165049.508908-9-jean-philippe@linaro.org> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200213165049.508908-1-jean-philippe@linaro.org> References: <20200213165049.508908-1-jean-philippe@linaro.org> MIME-Version: 1.0 Cc: mark.rutland@arm.com, frowand.list@gmail.com, corbet@lwn.net, liviu.dudau@arm.com, sudeep.holla@arm.com, rjw@rjwysocki.net, guohanjun@huawei.com, amurray@thegoodpenguin.co.uk, robin.murphy@arm.com, dwmw2@infradead.org, lenb@kernel.org X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" The pci_ats_supported() function checks if a device supports ATS and is allowed to use it. Signed-off-by: Jean-Philippe Brucker --- drivers/iommu/intel-iommu.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 9dc37672bf89..668f1b99111b 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -1449,8 +1449,7 @@ 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; -- 2.25.0 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu