Messages in this thread Patch in this message | | | From | Avi Kivity <> | Subject | [PATCH 35/45] KVM: ia64: Remove lock held by halted vcpu | Date | Mon, 8 Dec 2008 13:36:46 +0200 |
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From: Xiantao Zhang <xiantao.zhang@intel.com>
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> --- arch/ia64/kvm/kvm-ia64.c | 2 -- 1 files changed, 0 insertions(+), 2 deletions(-)
diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c index 43e45f6..70eb829 100644 --- a/arch/ia64/kvm/kvm-ia64.c +++ b/arch/ia64/kvm/kvm-ia64.c @@ -439,7 +439,6 @@ int kvm_emulate_halt(struct kvm_vcpu *vcpu) expires = div64_u64(itc_diff, cyc_per_usec); kt = ktime_set(0, 1000 * expires); - down_read(&vcpu->kvm->slots_lock); vcpu->arch.ht_active = 1; 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) vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE; - up_read(&vcpu->kvm->slots_lock); if (vcpu->arch.mp_state != KVM_MP_STATE_RUNNABLE) return -EINTR; -- 1.6.0.3
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