KVM: Add helper to run KVM_CHECK_EXTENSION on vm fd
We now can call KVM_CHECK_EXTENSION on the kvm fd or on the vm fd, whereas
the vm version is more accurate when it comes to PPC KVM.
Add a helper to make the vm version available that falls back to the non-vm
variant if the vm one is not available yet to stay compatible.
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h
index 174ea36..d2000af 100644
--- a/include/sysemu/kvm.h
+++ b/include/sysemu/kvm.h
@@ -303,6 +303,8 @@
int kvm_check_extension(KVMState *s, unsigned int extension);
+int kvm_vm_check_extension(KVMState *s, unsigned int extension);
+
#define kvm_vm_enable_cap(s, capability, cap_flags, ...) \
({ \
struct kvm_enable_cap cap = { \
diff --git a/kvm-all.c b/kvm-all.c
index b240bf8..b1cf703 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -493,6 +493,19 @@
return ret;
}
+int kvm_vm_check_extension(KVMState *s, unsigned int extension)
+{
+ int ret;
+
+ ret = kvm_vm_ioctl(s, KVM_CHECK_EXTENSION, extension);
+ if (ret < 0) {
+ /* VM wide version not implemented, use global one instead */
+ ret = kvm_check_extension(s, extension);
+ }
+
+ return ret;
+}
+
static int kvm_set_ioeventfd_mmio(int fd, hwaddr addr, uint32_t val,
bool assign, uint32_t size, bool datamatch)
{
