aboutsummaryrefslogtreecommitdiffstats
path: root/virt/kvm/kvm_main.c
diff options
context:
space:
mode:
authorAvi Kivity <avi@redhat.com>2010-02-18 11:25:22 +0200
committerMarcelo Tosatti <mtosatti@redhat.com>2010-03-01 12:36:13 -0300
commit70e335e16882df5b5d6971022e63c3603a1e8c23 (patch)
treea15adffbba25223c7232a6b349a5307cdcad48bf /virt/kvm/kvm_main.c
parentfa8273e9549b3cee2947d1aebe5242e7a25eb3de (diff)
downloadmrst-s0i3-test-70e335e16882df5b5d6971022e63c3603a1e8c23.tar.gz
mrst-s0i3-test-70e335e16882df5b5d6971022e63c3603a1e8c23.tar.xz
mrst-s0i3-test-70e335e16882df5b5d6971022e63c3603a1e8c23.zip
KVM: Convert kvm->requests_lock to raw_spinlock_t
The code relies on kvm->requests_lock inhibiting preemption. Noted by Jan Kiszka. Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'virt/kvm/kvm_main.c')
-rw-r--r--virt/kvm/kvm_main.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 0a360c26cc3..548f9253c19 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -138,7 +138,7 @@ static bool make_all_cpus_request(struct kvm *kvm, unsigned int req)
zalloc_cpumask_var(&cpus, GFP_ATOMIC);
- spin_lock(&kvm->requests_lock);
+ raw_spin_lock(&kvm->requests_lock);
me = smp_processor_id();
kvm_for_each_vcpu(i, vcpu, kvm) {
if (test_and_set_bit(req, &vcpu->requests))
@@ -153,7 +153,7 @@ static bool make_all_cpus_request(struct kvm *kvm, unsigned int req)
smp_call_function_many(cpus, ack_flush, NULL, 1);
else
called = false;
- spin_unlock(&kvm->requests_lock);
+ raw_spin_unlock(&kvm->requests_lock);
free_cpumask_var(cpus);
return called;
}
@@ -409,7 +409,7 @@ static struct kvm *kvm_create_vm(void)
kvm->mm = current->mm;
atomic_inc(&kvm->mm->mm_count);
spin_lock_init(&kvm->mmu_lock);
- spin_lock_init(&kvm->requests_lock);
+ raw_spin_lock_init(&kvm->requests_lock);
kvm_eventfd_init(kvm);
mutex_init(&kvm->lock);
mutex_init(&kvm->irq_lock);