[PATCH 3/3] KVM - add hypercall nr to kvm_run

[Jeff Dike <jdike@addtoit.com>]

Add the hypercall number to kvm_run and initialize it.  This might be
considered API-changing, so I kept it separate.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
--
 drivers/kvm/kvm_main.c |    1 +
 include/linux/kvm.h    |    1 +
 2 files changed, 2 insertions(+)

Index: kvm/drivers/kvm/kvm_main.c
===================================================================
--- kvm.orig/drivers/kvm/kvm_main.c
+++ kvm/drivers/kvm/kvm_main.c
@@ -1361,6 +1361,7 @@ int kvm_hypercall(struct kvm_vcpu *vcpu,
 	}
 	switch (nr) {
 	default:
+		run->hypercall.nr = nr;
 		run->hypercall.args[0] = a0;
 		run->hypercall.args[1] = a1;
 		run->hypercall.args[2] = a2;
Index: kvm/include/linux/kvm.h
===================================================================
--- kvm.orig/include/linux/kvm.h
+++ kvm/include/linux/kvm.h
@@ -106,6 +106,7 @@ struct kvm_run {
 		} mmio;
 		/* KVM_EXIT_HYPERCALL */
 		struct {
+			__u64 nr;
 			__u64 args[6];
 			__u64 ret;
 			__u32 longmode;