[PATCHv2 13/23] KVM: fill in run->mmio details in (read|write)_emulated function.

[Gleb Natapov <gleb@redhat.com>]

Fill in run->mmio details in (read|write)_emulated function just like
pio does. There is no point in filling only vcpu fields there just to
copy them into vcpu->run a little bit later.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
---
 arch/x86/kvm/x86.c |   25 +++++++++----------------
 1 files changed, 9 insertions(+), 16 deletions(-)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 7b4d113..aa629a0 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3324,9 +3324,10 @@ mmio:
 	trace_kvm_mmio(KVM_TRACE_MMIO_READ_UNSATISFIED, bytes, gpa, 0);
 
 	vcpu->mmio_needed = 1;
-	vcpu->mmio_phys_addr = gpa;
-	vcpu->mmio_size = bytes;
-	vcpu->mmio_is_write = 0;
+	vcpu->run->exit_reason = KVM_EXIT_MMIO;
+	vcpu->run->mmio.phys_addr = vcpu->mmio_phys_addr = gpa;
+	vcpu->run->mmio.len = vcpu->mmio_size = bytes;
+	vcpu->run->mmio.is_write = vcpu->mmio_is_write = 0;
 
 	return X86EMUL_UNHANDLEABLE;
 }
@@ -3374,10 +3375,11 @@ mmio:
 		return X86EMUL_CONTINUE;
 
 	vcpu->mmio_needed = 1;
-	vcpu->mmio_phys_addr = gpa;
-	vcpu->mmio_size = bytes;
-	vcpu->mmio_is_write = 1;
-	memcpy(vcpu->mmio_data, val, bytes);
+	vcpu->run->exit_reason = KVM_EXIT_MMIO;
+	vcpu->run->mmio.phys_addr = vcpu->mmio_phys_addr = gpa;
+	vcpu->run->mmio.len = vcpu->mmio_size = bytes;
+	vcpu->run->mmio.is_write = vcpu->mmio_is_write = 1;
+	memcpy(vcpu->run->mmio.data, val, bytes);
 
 	return X86EMUL_CONTINUE;
 }
@@ -3788,7 +3790,6 @@ int emulate_instruction(struct kvm_vcpu *vcpu,
 {
 	int r, shadow_mask;
 	struct decode_cache *c;
-	struct kvm_run *run = vcpu->run;
 
 	kvm_clear_exception_queue(vcpu);
 	vcpu->arch.mmio_fault_cr2 = cr2;
@@ -3875,14 +3876,6 @@ restart:
 		return EMULATE_DO_MMIO;
 	}
 
-	if (r || vcpu->mmio_is_write) {
-		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;
-		run->mmio.is_write = vcpu->mmio_is_write;
-	}
-
 	if (r) {
 		if (kvm_mmu_unprotect_page_virt(vcpu, cr2))
 			goto done;
-- 
1.6.5