Han, Weidong wrote:
From bba614bf2acf22f765995fb2364de04cec039226 Mon Sep 17 00:00:00 2001
From: Weidong Han <[EMAIL PROTECTED]>
Date: Fri, 14 Nov 2008 16:53:10 +0800
Subject: [PATCH] support VT-d device hotplug
wrap kvm_assign_device() and kvm_deassign_device() to support assign/deassign a
device to a guest
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -425,6 +425,8 @@ struct kvm_trace_rec {
struct kvm_assigned_pci_dev)
#define KVM_ASSIGN_IRQ _IOR(KVMIO, 0x70, \
struct kvm_assigned_irq)
+#define KVM_DEASSIGN_PCI_DEVICE _IOR(KVMIO, 0x71, \
+ struct kvm_assigned_pci_dev)
Need a KVM_CAP_ to indicate this is available.
static inline void kvm_guest_enter(void)
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 4f43abe..689d615 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -293,7 +293,11 @@ static int kvm_vm_ioctl_assign_device(struct kvm *kvm,
list_add(&match->list, &kvm->arch.assigned_dev_head);
if (assigned_dev->flags & KVM_DEV_ASSIGN_ENABLE_IOMMU) {
- r = kvm_iommu_map_guest(kvm, match);
+ if (kvm->arch.intel_iommu_domain)
+ r = kvm_assign_device(kvm, match);
+ else
+ r = kvm_iommu_map_guest(kvm, match);
+
Shouldn't kvm_assign_device() be called unconditionally? Perhaps some
code needs to be removed from kvm_iommu_map_guest().
--
error compiling committee.c: too many arguments to function
--
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