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| author | Michael S. Tsirkin <mst@redhat.com> | 2009-06-29 22:24:21 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2009-09-10 08:33:05 +0300 |
| commit | 108b56690f35e083c5559116d6656f59a557a815 (patch) | |
| tree | 64e5af9be0b4ebda257ea30ba8955cf0b3c96509 /arch/x86/kvm/x86.c | |
| parent | d5c2dcc36aaf4dfdf9e01513493c71d71715f817 (diff) | |
| download | lwn-108b56690f35e083c5559116d6656f59a557a815.tar.gz lwn-108b56690f35e083c5559116d6656f59a557a815.zip | |
KVM: switch pit creation to slots_lock
switch pit creation to slots_lock. slots_lock is already taken for read
everywhere, so we only need to take it for write when creating pit.
This is in preparation to removing in_range and kvm->lock around it.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm/x86.c')
| -rw-r--r-- | arch/x86/kvm/x86.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 0be75d53b7fd..7ce6367c1976 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -2188,7 +2188,7 @@ long kvm_arch_vm_ioctl(struct file *filp, sizeof(struct kvm_pit_config))) goto out; create_pit: - mutex_lock(&kvm->lock); + down_write(&kvm->slots_lock); r = -EEXIST; if (kvm->arch.vpit) goto create_pit_unlock; @@ -2197,7 +2197,7 @@ long kvm_arch_vm_ioctl(struct file *filp, if (kvm->arch.vpit) r = 0; create_pit_unlock: - mutex_unlock(&kvm->lock); + up_write(&kvm->slots_lock); break; case KVM_IRQ_LINE_STATUS: case KVM_IRQ_LINE: { |