diff mbox series

[v3,08/16] KVM: Move vcpu_load to arch-specific kvm_arch_vcpu_ioctl_get_mpstate

Message ID 20171204203538.8370-9-cdall@kernel.org
State Accepted
Headers show
Series Move vcpu_load and vcpu_put calls to arch code | expand

Commit Message

Christoffer Dall Dec. 4, 2017, 8:35 p.m. UTC 
From: Christoffer Dall <christoffer.dall@linaro.org>

Move vcpu_load() and vcpu_put() into the architecture specific
implementations of kvm_arch_vcpu_ioctl_get_mpstate().

Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
---
 arch/s390/kvm/kvm-s390.c | 11 +++++++++--
 arch/x86/kvm/x86.c       |  3 +++
 virt/kvm/arm/arm.c       |  3 +++
 virt/kvm/kvm_main.c      |  2 --
 4 files changed, 15 insertions(+), 4 deletions(-)

Comments

Cornelia Huck Dec. 11, 2017, 12:23 p.m. UTC | #1 
On Mon,  4 Dec 2017 21:35:30 +0100
Christoffer Dall <cdall@kernel.org> wrote:

> From: Christoffer Dall <christoffer.dall@linaro.org>
> 
> Move vcpu_load() and vcpu_put() into the architecture specific
> implementations of kvm_arch_vcpu_ioctl_get_mpstate().
> 
> Reviewed-by: David Hildenbrand <david@redhat.com>
> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
> ---
>  arch/s390/kvm/kvm-s390.c | 11 +++++++++--
>  arch/x86/kvm/x86.c       |  3 +++
>  virt/kvm/arm/arm.c       |  3 +++
>  virt/kvm/kvm_main.c      |  2 --
>  4 files changed, 15 insertions(+), 4 deletions(-)

Reviewed-by: Cornelia Huck <cohuck@redhat.com>
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diff mbox series

Patch

diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index d95b4f15e52b..396fc3db6d63 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -2836,9 +2836,16 @@  int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
 				    struct kvm_mp_state *mp_state)
 {
+	int ret;
+
+	vcpu_load(vcpu);
+
 	/* CHECK_STOP and LOAD are not supported yet */
-	return is_vcpu_stopped(vcpu) ? KVM_MP_STATE_STOPPED :
-				       KVM_MP_STATE_OPERATING;
+	ret = is_vcpu_stopped(vcpu) ? KVM_MP_STATE_STOPPED :
+				      KVM_MP_STATE_OPERATING;
+
+	vcpu_put(vcpu);
+	return ret;
 }
 
 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index a31a80aee0b9..9bf62c336aa5 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -7440,6 +7440,8 @@  int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
 				    struct kvm_mp_state *mp_state)
 {
+	vcpu_load(vcpu);
+
 	kvm_apic_accept_events(vcpu);
 	if (vcpu->arch.mp_state == KVM_MP_STATE_HALTED &&
 					vcpu->arch.pv.pv_unhalted)
@@ -7447,6 +7449,7 @@  int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
 	else
 		mp_state->mp_state = vcpu->arch.mp_state;
 
+	vcpu_put(vcpu);
 	return 0;
 }
 
diff --git a/virt/kvm/arm/arm.c b/virt/kvm/arm/arm.c
index 1f448b208686..a7171701df44 100644
--- a/virt/kvm/arm/arm.c
+++ b/virt/kvm/arm/arm.c
@@ -381,11 +381,14 @@  static void vcpu_power_off(struct kvm_vcpu *vcpu)
 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
 				    struct kvm_mp_state *mp_state)
 {
+	vcpu_load(vcpu);
+
 	if (vcpu->arch.power_off)
 		mp_state->mp_state = KVM_MP_STATE_STOPPED;
 	else
 		mp_state->mp_state = KVM_MP_STATE_RUNNABLE;
 
+	vcpu_put(vcpu);
 	return 0;
 }
 
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 19cf2d11f80f..eac3c29697db 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -2603,9 +2603,7 @@  static long kvm_vcpu_ioctl(struct file *filp,
 	case KVM_GET_MP_STATE: {
 		struct kvm_mp_state mp_state;
 
-		vcpu_load(vcpu);
 		r = kvm_arch_vcpu_ioctl_get_mpstate(vcpu, &mp_state);
-		vcpu_put(vcpu);
 		if (r)
 			goto out;
 		r = -EFAULT;