From: Avi Kivity <avi@redhat.com>
To: kvm-ia64@vger.kernel.org
Subject: [PATCH 7/7] KVM: Consolidate arch specific vcpu ioctl locking
Date: Thu, 13 May 2010 11:17:39 +0000 [thread overview]
Message-ID: <1273749459-622-8-git-send-email-avi@redhat.com> (raw)
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>
---
arch/powerpc/kvm/powerpc.c | 11 ++++-------
arch/s390/kvm/kvm-s390.c | 13 ++++++-------
arch/x86/kvm/x86.c | 2 --
virt/kvm/kvm_main.c | 2 --
4 files changed, 10 insertions(+), 18 deletions(-)
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index caeed7b..a1d8750 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -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;
}
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 28cd8fd..fad1024 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -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;
}
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 8b9e5ec..3a763de 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -2288,7 +2288,6 @@ 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;
@@ -2486,7 +2485,6 @@ long kvm_arch_vcpu_ioctl(struct file *filp,
r = -EINVAL;
}
out:
- vcpu_put(vcpu);
kfree(lapic);
return r;
}
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 08b2ccd..5ee558c 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -1564,9 +1564,7 @@ out_free2:
break;
}
default:
- vcpu_put(vcpu);
r = kvm_arch_vcpu_ioctl(filp, ioctl, arg);
- vcpu_load(vcpu);
}
out:
vcpu_put(vcpu);
--
1.7.0.4
reply other threads:[~2010-05-13 11:17 UTC|newest]
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