[Patch Part3 V2 01/21] iommu/vt-d: match segment number when searching for dev_iotlb capable devices
Jiang Liu <[email protected]>
| Newsgroups | gmane.linux.kernel,gmane.linux.kernel.iommu,gmane.linux.kernel.pci,gmane.linux.hotplug.devel |
|---|---|
| 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 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