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authorXiantao Zhang <xiantao.zhang@intel.com>2008-10-23 15:03:38 +0800
committerAvi Kivity <avi@redhat.com>2008-12-31 16:51:49 +0200
commit853dafb62b386a3a75808483a120998e734eb6e1 (patch)
treeb18153869727ba2f81ac35726025af197d0a8f00
parenta917f7af3905953329361d29b6db78eb17b4d44c (diff)
KVM: ia64: Remove lock held by halted vcpu
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>
-rw-r--r--arch/ia64/kvm/kvm-ia64.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c
index 43e45f6afcd..70eb829767f 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;