[PATCH] KVM: API versioning

Add compile-time and run-time API versioning.

Signed-off-by: Avi Kivity <avi@qumranet.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c
index bc2e6c19f855..9f24f22e4cb2 100644
--- a/drivers/kvm/kvm_main.c
+++ b/drivers/kvm/kvm_main.c
@@ -1603,6 +1603,9 @@ static long kvm_dev_ioctl(struct file *filp,
         int r = -EINVAL;
 
         switch (ioctl) {
+        case KVM_GET_API_VERSION:
+                r = KVM_API_VERSION;
+                break;
         case KVM_CREATE_VCPU: {
                 r = kvm_dev_ioctl_create_vcpu(kvm, arg);
                 if (r)