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-rw-r--r--include/linux/kvm.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/kvm.h b/include/linux/kvm.h
index 93472da..c93cf53 100644
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -232,6 +232,11 @@ struct kvm_cpuid {
#define KVM_GET_API_VERSION _IO(KVMIO, 0x00)
#define KVM_CREATE_VM _IO(KVMIO, 0x01) /* returns a VM fd */
#define KVM_GET_MSR_INDEX_LIST _IOWR(KVMIO, 0x02, struct kvm_msr_list)
+/*
+ * Check if a kvm extension is available. Argument is extension number,
+ * return is 1 (yes) or 0 (no, sorry).
+ */
+#define KVM_CHECK_EXTENSION _IO(KVMIO, 0x03)
/*
* ioctls for VM fds
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