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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>
This commit is contained in:
Christoffer Dall 2017-12-04 21:35:31 +01:00 committed by Paolo Bonzini
parent fd2325612c
commit e83dff5edf
4 changed files with 21 additions and 7 deletions
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3
arch/s390/kvm/kvm-s390.c
View File

@ -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;
}

14
arch/x86/kvm/x86.c
View File

@ -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,

9
virt/kvm/arm/arm.c
View File

@ -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;
}
/**

2
virt/kvm/kvm_main.c
View File

@ -2649,9 +2649,7 @@ static long kvm_vcpu_ioctl(struct file *filp,
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: {