diff mbox

[v2,08/16] KVM: Move vcpu_load to arch-specific kvm_arch_vcpu_ioctl_get_mpstate

Message ID 20171129164116.16167-9-christoffer.dall@linaro.org (mailing list archive)
State New, archived
Headers show

Commit Message

Christoffer Dall Nov. 29, 2017, 4:41 p.m. UTC
Move vcpu_load() and vcpu_put() into the architecture specific
implementations of kvm_arch_vcpu_ioctl_get_mpstate().

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

David Hildenbrand Nov. 29, 2017, 5:47 p.m. UTC | #1
On 29.11.2017 17:41, Christoffer Dall wrote:
> Move vcpu_load() and vcpu_put() into the architecture specific
> implementations of kvm_arch_vcpu_ioctl_get_mpstate().
> 
> 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(-)
> 
> diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
> index d95b4f1..396fc3d 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 a31a80a..9bf62c3 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 1f448b2..a717170 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 19cf2d1..eac3c29 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;
> 

Reviewed-by: David Hildenbrand <david@redhat.com>
diff mbox

Patch

diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index d95b4f1..396fc3d 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 a31a80a..9bf62c3 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 1f448b2..a717170 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 19cf2d1..eac3c29 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;