[PATCH 027/104] KVM: add hypercall nr to kvm_run

[Avi Kivity <avi@qumranet.com>]

From: Jeff Dike <jdike@addtoit.com>

Add the hypercall number to kvm_run and initialize it.  This changes the ABI,
but as this particular ABI was unusable before this no users are affected.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
---
 drivers/kvm/kvm_main.c |    1 +
 include/linux/kvm.h    |    1 +
 2 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c
index 69d9ab4..2094746 100644
--- a/drivers/kvm/kvm_main.c
+++ b/drivers/kvm/kvm_main.c
@@ -1378,6 +1378,7 @@ int kvm_hypercall(struct kvm_vcpu *vcpu, struct kvm_run *run)
 	}
 	switch (nr) {
 	default:
+		run->hypercall.nr = nr;
 		run->hypercall.args[0] = a0;
 		run->hypercall.args[1] = a1;
 		run->hypercall.args[2] = a2;
diff --git a/include/linux/kvm.h b/include/linux/kvm.h
index 8db01a9..91a446f 100644
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -99,6 +99,7 @@ struct kvm_run {
 		} mmio;
 		/* KVM_EXIT_HYPERCALL */
 		struct {
+			__u64 nr;
 			__u64 args[6];
 			__u64 ret;
 			__u32 longmode;
-- 
1.5.3

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