From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jiang Liu Subject: [Patch Part3 V2 01/21] iommu/vt-d: match segment number when searching for dev_iotlb capable devices Date: Tue, 6 May 2014 15:05:12 +0800 Message-ID: <1399359932-28972-2-git-send-email-jiang.liu@linux.intel.com> References: <1399359932-28972-1-git-send-email-jiang.liu@linux.intel.com> Return-path: In-Reply-To: <1399359932-28972-1-git-send-email-jiang.liu@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org To: Joerg Roedel , David Woodhouse , Yinghai Lu , Bjorn Helgaas , Dan Williams , Vinod Koul , "Rafael J . Wysocki" Cc: Jiang Liu , Ashok Raj , Yijing Wang , Tony Luck , iommu@lists.linux-foundation.org, linux-pci@vger.kernel.org, linux-hotplug@vger.kernel.org, linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org List-Id: iommu@lists.linux-foundation.org For virtual machine and static identity domains, there may be devices from different PCI segments associated with the same domain. So function iommu_support_dev_iotlb() should also match PCI segment number (iommu unit) when searching for dev_iotlb capable devices. Signed-off-by: Jiang Liu --- drivers/iommu/intel-iommu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index f256ffc02e29..612fd441b225 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -1274,7 +1274,8 @@ iommu_support_dev_iotlb (struct dmar_domain *domain, struct intel_iommu *iommu, spin_lock_irqsave(&device_domain_lock, flags); list_for_each_entry(info, &domain->devices, link) - if (info->bus == bus && info->devfn == devfn) { + if (info->iommu == iommu && info->bus == bus && + info->devfn == devfn) { found = 1; break; } -- 1.7.10.4