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[Part3,V1,01/22] iommu/vt-d: match segment number when searching for dev_iotlb capable devices

Message ID 1398150453-28141-2-git-send-email-jiang.liu@linux.intel.com
State Not Applicable
Headers show

Commit Message

Jiang Liu April 22, 2014, 7:07 a.m. UTC 
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 <jiang.liu@linux.intel.com>
---
 drivers/iommu/intel-iommu.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

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;
 		}