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| author | Gleb Natapov <gleb@redhat.com> | 2010-03-09 11:01:10 +0100 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2010-04-20 11:55:04 +0200 |
| commit | 7567cae105e435b53e5a3e778546dd3ec53e3204 (patch) | |
| tree | a8a9651af97e24940e117f8f0d6adf49476cc394 /arch/x86 | |
| parent | Linux 2.6.34-rc5 (diff) | |
| download | linux-7567cae105e435b53e5a3e778546dd3ec53e3204.tar.xz linux-7567cae105e435b53e5a3e778546dd3ec53e3204.zip | |
KVM: take srcu lock before call to complete_pio()
complete_pio() may use slot table which is protected by srcu.
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kvm/x86.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 24cd0ee896e9..2eb999dc9774 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -4483,7 +4483,9 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) kvm_set_cr8(vcpu, kvm_run->cr8); if (vcpu->arch.pio.cur_count) { + vcpu->srcu_idx = srcu_read_lock(&vcpu->kvm->srcu); r = complete_pio(vcpu); + srcu_read_unlock(&vcpu->kvm->srcu, vcpu->srcu_idx); if (r) goto out; } |