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@xxxxxxxxxx>
> ---
> 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@xxxxxxxxxx>
--
Thanks,
David / dhildenb
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