KVM: Move vcpu_load to arch-specific kvm_arch_vcpu_ioctl_set_mpstate

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

Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 4297f50..4e6304d 100644 (file)
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -2850,6 +2850,8 @@ int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
 {
        int rc = 0;
 
+       vcpu_load(vcpu);
+
        /* user space knows about this interface - let it control the state */
        vcpu->kvm->arch.user_cpu_state_ctrl = 1;
 
@@ -2867,6 +2869,7 @@ int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
                rc = -ENXIO;
        }
 
+       vcpu_put(vcpu);
        return rc;
 }
 

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 8079193..a9e6cca 100644 (file)
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -7481,15 +7481,19 @@ int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
                                    struct kvm_mp_state *mp_state)
 {
+       int ret = -EINVAL;
+
+       vcpu_load(vcpu);
+
        if (!lapic_in_kernel(vcpu) &&
            mp_state->mp_state != KVM_MP_STATE_RUNNABLE)
-               return -EINVAL;
+               goto out;
 
        /* INITs are latched while in SMM */
        if ((is_smm(vcpu) || vcpu->arch.smi_pending) &&
            (mp_state->mp_state == KVM_MP_STATE_SIPI_RECEIVED ||
             mp_state->mp_state == KVM_MP_STATE_INIT_RECEIVED))
-               return -EINVAL;
+               goto out;
 
        if (mp_state->mp_state == KVM_MP_STATE_SIPI_RECEIVED) {
                vcpu->arch.mp_state = KVM_MP_STATE_INIT_RECEIVED;
@@ -7497,7 +7501,11 @@ int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
        } else
                vcpu->arch.mp_state = mp_state->mp_state;
        kvm_make_request(KVM_REQ_EVENT, vcpu);
-       return 0;
+
+       ret = 0;
+out:
+       vcpu_put(vcpu);
+       return ret;
 }
 
 int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int idt_index,

diff --git a/virt/kvm/arm/arm.c b/virt/kvm/arm/arm.c
index 65d5010..aa61670 100644 (file)
--- a/virt/kvm/arm/arm.c
+++ b/virt/kvm/arm/arm.c
@@ -395,6 +395,10 @@ int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
                                    struct kvm_mp_state *mp_state)
 {
+       int ret = 0;
+
+       vcpu_load(vcpu);
+
        switch (mp_state->mp_state) {
        case KVM_MP_STATE_RUNNABLE:
                vcpu->arch.power_off = false;
@@ -403,10 +407,11 @@ int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
                vcpu_power_off(vcpu);
                break;
        default:
-               return -EINVAL;
+               ret = -EINVAL;
        }
 
-       return 0;
+       vcpu_put(vcpu);
+       return ret;
 }
 
 /**

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 8e2f582..4b5aeb4 100644 (file)
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -2649,9 +2649,7 @@ out_free1:
                r = -EFAULT;
                if (copy_from_user(&mp_state, argp, sizeof(mp_state)))
                        goto out;
-               vcpu_load(vcpu);
                r = kvm_arch_vcpu_ioctl_set_mpstate(vcpu, &mp_state);
-               vcpu_put(vcpu);
                break;
        }
        case KVM_TRANSLATE: {