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Fri, 21 Aug 2020 21:28:34 -0700 (PDT) From: Jacob Pan X-Google-Original-From: Jacob Pan To: iommu@lists.linux-foundation.org, LKML , Jean-Philippe Brucker , "Lu Baolu" , Joerg Roedel , David Woodhouse Subject: [PATCH v2 9/9] iommu/vt-d: Store guest PASID during bind Date: Fri, 21 Aug 2020 21:35:18 -0700 Message-Id: <1598070918-21321-10-git-send-email-jacob.jun.pan@linux.intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1598070918-21321-1-git-send-email-jacob.jun.pan@linux.intel.com> References: <1598070918-21321-1-git-send-email-jacob.jun.pan@linux.intel.com> X-Mailman-Approved-At: Sat, 22 Aug 2020 07:09:31 +0000 Cc: "Tian, Kevin" , Raj Ashok , Wu Hao 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: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" IOASID core maintains the guest-host mapping in the form of SPID and IOASID. This patch assigns the guest PASID (if valid) as SPID while binding guest page table with a host PASID. This mapping will be used for lookup and notifications. Signed-off-by: Jacob Pan --- drivers/iommu/intel/svm.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/iommu/intel/svm.c b/drivers/iommu/intel/svm.c index d8a5efa75095..4c958b1aec4c 100644 --- a/drivers/iommu/intel/svm.c +++ b/drivers/iommu/intel/svm.c @@ -406,6 +406,7 @@ int intel_svm_bind_gpasid(struct iommu_domain *domain, struct device *dev, if (data->flags & IOMMU_SVA_GPASID_VAL) { svm->gpasid = data->gpasid; svm->flags |= SVM_FLAG_GUEST_PASID; + ioasid_attach_spid(data->hpasid, data->gpasid); } svm->iommu = iommu; /* @@ -517,6 +518,7 @@ int intel_svm_unbind_gpasid(struct device *dev, int pasid) ioasid_attach_data(pasid, NULL); ioasid_notify(pasid, IOASID_UNBIND, IOASID_NOTIFY_SET); + ioasid_attach_spid(pasid, INVALID_IOASID); kfree(svm); } } -- 2.7.4 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu