Commit 411c35b7 authored by Gleb Natapov's avatar Gleb Natapov Committed by Avi Kivity
Browse files

KVM: fill in run->mmio details in (read|write)_emulated function 



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: default avatarGleb Natapov <gleb@redhat.com>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent e680080e

arch/x86/kvm/x86.c

+9 −16
Original line number Diff line number Diff line
@@ -3386,9 +3386,10 @@ 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;

}
@@ -3436,10 +3437,11 @@ 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;

}
@@ -3850,7 +3852,6 @@ 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;
@@ -3937,14 +3938,6 @@ 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;

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