On Tue, Jul 17, 2007 at 11:12:53AM +0300, Avi Kivity wrote:
> I believe that emulate_instruction will set run->mmio if it returns
> EMULATE_DO_MMIO.
Righto, forgot to check that. How about this patch instead?
Set exit_reason to KVM_EXIT_MMIO where run->mmio is initialized.
Signed-off-by: Jeff Dike <[email protected]>
--
drivers/kvm/kvm_main.c | 2 +-
drivers/kvm/svm.c | 1 -
drivers/kvm/vmx.c | 1 -
3 files changed, 1 insertion(+), 3 deletions(-)
Index: kvm/drivers/kvm/kvm_main.c
===================================================================
--- kvm.orig/drivers/kvm/kvm_main.c
+++ kvm/drivers/kvm/kvm_main.c
@@ -1294,6 +1294,7 @@ int emulate_instruction(struct kvm_vcpu
r = x86_emulate_memop(&emulate_ctxt, &emulate_ops);
if ((r || vcpu->mmio_is_write) && run) {
+ run->exit_reason = KVM_EXIT_MMIO;
run->mmio.phys_addr = vcpu->mmio_phys_addr;
memcpy(run->mmio.data, vcpu->mmio_data, 8);
run->mmio.len = vcpu->mmio_size;
@@ -1929,7 +1930,6 @@ static int kvm_vcpu_ioctl_run(struct kvm
/*
* Read-modify-write. Back to userspace.
*/
- kvm_run->exit_reason = KVM_EXIT_MMIO;
r = 0;
goto out;
}
Index: kvm/drivers/kvm/svm.c
===================================================================
--- kvm.orig/drivers/kvm/svm.c
+++ kvm/drivers/kvm/svm.c
@@ -929,7 +929,6 @@ static int pf_interception(struct kvm_vc
return 1;
case EMULATE_DO_MMIO:
++vcpu->stat.mmio_exits;
- kvm_run->exit_reason = KVM_EXIT_MMIO;
return 0;
case EMULATE_FAIL:
vcpu_printf(vcpu, "%s: emulate fail\n", __FUNCTION__);
Index: kvm/drivers/kvm/vmx.c
===================================================================
--- kvm.orig/drivers/kvm/vmx.c
+++ kvm/drivers/kvm/vmx.c
@@ -1610,7 +1610,6 @@ static int handle_exception(struct kvm_v
return 1;
case EMULATE_DO_MMIO:
++vcpu->stat.mmio_exits;
- kvm_run->exit_reason = KVM_EXIT_MMIO;
return 0;
case EMULATE_FAIL:
vcpu_printf(vcpu, "%s: emulate fail\n", __FUNCTION__);
--
Work email - jdike at linux dot intel dot com
-
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