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KVM: ia64: Remove lock held by halted vcpu

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Remove the lock protection for kvm halt logic, otherwise,
once other vcpus want to acquire the lock, and they have to
wait all vcpus are waken up from halt.

Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Xiantao Zhang 2008-10-23 15:03:38 +08:00 committed by Avi Kivity
parent a917f7af39
commit 853dafb62b
1 changed files with 0 additions and 2 deletions
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arch/ia64/kvm/kvm-ia64.c
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@ -439,7 +439,6 @@ int kvm_emulate_halt(struct kvm_vcpu *vcpu)
expires = div64_u64(itc_diff, cyc_per_usec); expires = div64_u64(itc_diff, cyc_per_usec);
kt = ktime_set(0, 1000 * expires); kt = ktime_set(0, 1000 * expires);
down_read(&vcpu->kvm->slots_lock);
vcpu->arch.ht_active = 1; vcpu->arch.ht_active = 1;
hrtimer_start(p_ht, kt, HRTIMER_MODE_ABS); hrtimer_start(p_ht, kt, HRTIMER_MODE_ABS);
@ -452,7 +451,6 @@ int kvm_emulate_halt(struct kvm_vcpu *vcpu)
if (vcpu->arch.mp_state == KVM_MP_STATE_HALTED) if (vcpu->arch.mp_state == KVM_MP_STATE_HALTED)
vcpu->arch.mp_state = vcpu->arch.mp_state =
KVM_MP_STATE_RUNNABLE; KVM_MP_STATE_RUNNABLE;
up_read(&vcpu->kvm->slots_lock);
if (vcpu->arch.mp_state != KVM_MP_STATE_RUNNABLE) if (vcpu->arch.mp_state != KVM_MP_STATE_RUNNABLE)
return -EINTR; return -EINTR;