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authorSheng Yang <sheng@linux.intel.com>2009-01-06 10:03:02 +0800
committerAvi Kivity <avi@redhat.com>2009-02-15 02:47:36 +0200
commitad8ba2cd44d4d39fb3fe55d5dcc565b19fc3a7fb (patch)
tree74dfd501fc541b7d55eecec7b9469f1db8225507
parent85db06e514422ae429b5f85742d8111b70bd56f3 (diff)
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KVM: Add kvm_arch_sync_events to sync with asynchronize events
kvm_arch_sync_events is introduced to quiet down all other events may happen contemporary with VM destroy process, like IRQ handler and work struct for assigned device. For kvm_arch_sync_events is called at the very beginning of kvm_destroy_vm(), so the state of KVM here is legal and can provide a environment to quiet down other events. Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
-rw-r--r--arch/ia64/kvm/kvm-ia64.c4
-rw-r--r--arch/powerpc/kvm/powerpc.c4
-rw-r--r--arch/s390/kvm/kvm-s390.c4
-rw-r--r--arch/x86/kvm/x86.c4
-rw-r--r--include/linux/kvm_host.h1
-rw-r--r--virt/kvm/kvm_main.c1
6 files changed, 18 insertions, 0 deletions
diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c
index 4e586f6110a..28f982045f2 100644
--- a/arch/ia64/kvm/kvm-ia64.c
+++ b/arch/ia64/kvm/kvm-ia64.c
@@ -1337,6 +1337,10 @@ static void kvm_release_vm_pages(struct kvm *kvm)
}
}
+void kvm_arch_sync_events(struct kvm *kvm)
+{
+}
+
void kvm_arch_destroy_vm(struct kvm *kvm)
{
kvm_iommu_unmap_guest(kvm);
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 2822c8ccfaa..5f81256287f 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -125,6 +125,10 @@ static void kvmppc_free_vcpus(struct kvm *kvm)
}
}
+void kvm_arch_sync_events(struct kvm *kvm)
+{
+}
+
void kvm_arch_destroy_vm(struct kvm *kvm)
{
kvmppc_free_vcpus(kvm);
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index be8497186b9..0d33893e1e8 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -212,6 +212,10 @@ static void kvm_free_vcpus(struct kvm *kvm)
}
}
+void kvm_arch_sync_events(struct kvm *kvm)
+{
+}
+
void kvm_arch_destroy_vm(struct kvm *kvm)
{
kvm_free_vcpus(kvm);
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index cc17546a240..b0fc079f1be 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -4127,6 +4127,10 @@ static void kvm_free_vcpus(struct kvm *kvm)
}
+void kvm_arch_sync_events(struct kvm *kvm)
+{
+}
+
void kvm_arch_destroy_vm(struct kvm *kvm)
{
kvm_free_all_assigned_devices(kvm);
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index ec49d0be7f5..bf6f703642f 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -285,6 +285,7 @@ void kvm_free_physmem(struct kvm *kvm);
struct kvm *kvm_arch_create_vm(void);
void kvm_arch_destroy_vm(struct kvm *kvm);
void kvm_free_all_assigned_devices(struct kvm *kvm);
+void kvm_arch_sync_events(struct kvm *kvm);
int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
int kvm_cpu_has_interrupt(struct kvm_vcpu *v);
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 0b6f2f71271..68e3f1ec167 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -891,6 +891,7 @@ static void kvm_destroy_vm(struct kvm *kvm)
{
struct mm_struct *mm = kvm->mm;
+ kvm_arch_sync_events(kvm);
spin_lock(&kvm_lock);
list_del(&kvm->vm_list);
spin_unlock(&kvm_lock);