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KVM: Consolidate arch specific vcpu ioctl locking 

Now that all arch specific ioctls have centralized locking, it is easy to
move it to the central dispatcher.

Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Avi Kivity 2010-05-13 12:35:17 +03:00
parent 19483d1440
commit 9373662463
4 changed files with 10 additions and 18 deletions
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11
arch/powerpc/kvm/powerpc.c
View File

@ -512,17 +512,16 @@ long kvm_arch_vcpu_ioctl(struct file *filp,
void __user *argp = (void __user *)arg;
long r;
if (ioctl == KVM_INTERRUPT) {
switch (ioctl) {
case KVM_INTERRUPT: {
struct kvm_interrupt irq;
r = -EFAULT;
if (copy_from_user(&irq, argp, sizeof(irq)))
goto out_nolock;
goto out;
r = kvm_vcpu_ioctl_interrupt(vcpu, &irq);
goto out_nolock;
goto out;
}
vcpu_load(vcpu);
switch (ioctl) {
case KVM_ENABLE_CAP:
{
struct kvm_enable_cap cap;
@ -537,8 +536,6 @@ long kvm_arch_vcpu_ioctl(struct file *filp,
}
out:
vcpu_put(vcpu);
out_nolock:
return r;
}

13
arch/s390/kvm/kvm-s390.c
View File

@ -638,16 +638,16 @@ long kvm_arch_vcpu_ioctl(struct file *filp,
void __user *argp = (void __user *)arg;
long r;
if (ioctl == KVM_S390_INTERRUPT) {
switch (ioctl) {
case KVM_S390_INTERRUPT: {
struct kvm_s390_interrupt s390int;
r = -EFAULT;
if (copy_from_user(&s390int, argp, sizeof(s390int)))
return -EFAULT;
return kvm_s390_inject_vcpu(vcpu, &s390int);
break;
r = kvm_s390_inject_vcpu(vcpu, &s390int);
break;
}
vcpu_load(vcpu);
switch (ioctl) {
case KVM_S390_STORE_STATUS:
r = kvm_s390_vcpu_store_status(vcpu, arg);
break;
@ -666,7 +666,6 @@ long kvm_arch_vcpu_ioctl(struct file *filp,
default:
r = -EINVAL;
}
vcpu_put(vcpu);
return r;
}

2
arch/x86/kvm/x86.c
View File

@ -2298,7 +2298,6 @@ long kvm_arch_vcpu_ioctl(struct file *filp,
int r;
struct kvm_lapic_state *lapic = NULL;
vcpu_load(vcpu);
switch (ioctl) {
case KVM_GET_LAPIC: {
r = -EINVAL;
@ -2496,7 +2495,6 @@ long kvm_arch_vcpu_ioctl(struct file *filp,
r = -EINVAL;
}
out:
vcpu_put(vcpu);
kfree(lapic);
return r;
}

2
virt/kvm/kvm_main.c
View File

@ -1578,9 +1578,7 @@ out_free2:
break;
}
default:
vcpu_put(vcpu);
r = kvm_arch_vcpu_ioctl(filp, ioctl, arg);
vcpu_load(vcpu);
}
out:
vcpu_put(vcpu);