iommu/vt-d: Match segment number when searching for dev_iotlb capable devices

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>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Jiang Liu 2014-07-11 14:19:25 +08:00 коммит произвёл Joerg Roedel
Родитель cbb24a25a8
Коммит c3b497c6bb
1 изменённых файлов: 2 добавлений и 1 удалений

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@ -1272,7 +1272,8 @@ 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;
}