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Deassign device in kvm_free_assgined_device

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In kvm_iommu_unmap_memslots(), assigned_dev_head is already empty.

Signed-off-by: Weidong Han <[email protected]>
Signed-off-by: Joerg Roedel <[email protected]>
This commit is contained in:
Weidong Han 2008-12-08 23:29:53 +08:00 • committed by Joerg Roedel
commit b653574a7d
3 changed files with 2 additions and 10 deletions
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1
virt/kvm/kvm_main.c
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@ -496,6 +496,7 @@ static int kvm_vm_ioctl_assign_device(struct kvm *kvm,
match->assigned_dev_id = assigned_dev->assigned_dev_id;
match->host_busnr = assigned_dev->busnr;
match->host_devfn = assigned_dev->devfn;
match->flags = assigned_dev->flags;
match->dev = dev;
match->irq_source_id = -1;
match->kvm = kvm;

10
virt/kvm/vtd.c
View file

@ -205,22 +205,12 @@ static int kvm_iommu_unmap_memslots(struct kvm *kvm)
int kvm_iommu_unmap_guest(struct kvm *kvm)
{
struct kvm_assigned_dev_kernel *entry;
struct dmar_domain *domain = kvm->arch.intel_iommu_domain;
/* check if iommu exists and in use */
if (!domain)
return 0;
list_for_each_entry(entry, &kvm->arch.assigned_dev_head, list) {
printk(KERN_DEBUG "VT-d unmap: host bdf = %x:%x:%x\n",
entry->host_busnr,
PCI_SLOT(entry->host_devfn),
PCI_FUNC(entry->host_devfn));
/* detach kvm dmar domain */
intel_iommu_detach_device(domain, entry->dev);
}
kvm_iommu_unmap_memslots(kvm);
intel_iommu_free_domain(domain);
return 0;