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authorMarcelo Tosatti <mtosatti@redhat.com>2008-09-08 15:23:48 -0300
committerAvi Kivity <avi@qumranet.com>2008-10-15 10:15:26 +0200
commitd76901750ab9f71091d33ef3d2b5909d8a9a4ad4 (patch)
treee4a7ac912c70a05e4c8ee4e7294d9add48383fc2 /arch/x86/kvm/i8254.c
parenta6a3034cb979b1fa3948d8e1e91b2387fc66b89b (diff)
downloadop-kernel-dev-d76901750ab9f71091d33ef3d2b5909d8a9a4ad4.zip
op-kernel-dev-d76901750ab9f71091d33ef3d2b5909d8a9a4ad4.tar.gz
KVM: x86: do not execute halted vcpus
Offline or uninitialized vcpu's can be executed if requested to perform userspace work. Follow Avi's suggestion to handle halted vcpu's in the main loop, simplifying kvm_emulate_halt(). Introduce a new vcpu->requests bit to indicate events that promote state from halted to running. Also standardize vcpu wake sites. Signed-off-by: Marcelo Tosatti <mtosatti <at> redhat.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'arch/x86/kvm/i8254.c')
-rw-r--r--arch/x86/kvm/i8254.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c
index 4cb4430..634132a 100644
--- a/arch/x86/kvm/i8254.c
+++ b/arch/x86/kvm/i8254.c
@@ -200,10 +200,9 @@ static int __pit_timer_fn(struct kvm_kpit_state *ps)
if (!atomic_inc_and_test(&pt->pending))
set_bit(KVM_REQ_PENDING_TIMER, &vcpu0->requests);
- if (vcpu0 && waitqueue_active(&vcpu0->wq)) {
- vcpu0->arch.mp_state = KVM_MP_STATE_RUNNABLE;
+
+ if (vcpu0 && waitqueue_active(&vcpu0->wq))
wake_up_interruptible(&vcpu0->wq);
- }
pt->timer.expires = ktime_add_ns(pt->timer.expires, pt->period);
pt->scheduled = ktime_to_ns(pt->timer.expires);
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