KVM: Allow userspace to process hypercalls which have no kernel handler
This is useful for paravirtualized graphics devices, for example.
Signed-off-by: Avi Kivity <avi@qumranet.com>
diff --git a/include/linux/kvm.h b/include/linux/kvm.h
index c93cf53..9151ebf 100644
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -11,7 +11,7 @@
#include <asm/types.h>
#include <linux/ioctl.h>
-#define KVM_API_VERSION 6
+#define KVM_API_VERSION 7
/*
* Architectural interrupt line count, and the size of the bitmap needed
@@ -41,6 +41,7 @@
KVM_EXIT_UNKNOWN = 0,
KVM_EXIT_EXCEPTION = 1,
KVM_EXIT_IO = 2,
+ KVM_EXIT_HYPERCALL = 3,
KVM_EXIT_DEBUG = 4,
KVM_EXIT_HLT = 5,
KVM_EXIT_MMIO = 6,
@@ -103,6 +104,13 @@
__u32 len;
__u8 is_write;
} mmio;
+ /* KVM_EXIT_HYPERCALL */
+ struct {
+ __u64 args[6];
+ __u64 ret;
+ __u32 longmode;
+ __u32 pad;
+ } hypercall;
};
};