[Patch Part3 V3 01/21] iommu/vt-d: match segment number when searching for dev_iotlb capable devices
Jiang Liu <[email protected]>
| Newsgroups | org.kernel.vger.linux-hotplug,dev.linux.lists.iommu,org.kernel.vger.linux-kernel,org.kernel.vger.linux-pci |
|---|---|
| Message-ID | <[email protected]> |
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 <[email protected]> --- 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 51b6b77dc3e5..e29d963f3967 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -1275,7 +1275,8 @@ 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