KVM: switch vcpu context to use SRCU
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c
index d0ad538..d5e3846 100644
--- a/arch/ia64/kvm/kvm-ia64.c
+++ b/arch/ia64/kvm/kvm-ia64.c
@@ -636,12 +636,9 @@
static int __vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
{
union context *host_ctx, *guest_ctx;
- int r;
+ int r, idx;
- /*
- * down_read() may sleep and return with interrupts enabled
- */
- down_read(&vcpu->kvm->slots_lock);
+ idx = srcu_read_lock(&vcpu->kvm->srcu);
again:
if (signal_pending(current)) {
@@ -663,7 +660,7 @@
if (r < 0)
goto vcpu_run_fail;
- up_read(&vcpu->kvm->slots_lock);
+ srcu_read_unlock(&vcpu->kvm->srcu, idx);
kvm_guest_enter();
/*
@@ -687,7 +684,7 @@
kvm_guest_exit();
preempt_enable();
- down_read(&vcpu->kvm->slots_lock);
+ idx = srcu_read_lock(&vcpu->kvm->srcu);
r = kvm_handle_exit(kvm_run, vcpu);
@@ -697,10 +694,10 @@
}
out:
- up_read(&vcpu->kvm->slots_lock);
+ srcu_read_unlock(&vcpu->kvm->srcu, idx);
if (r > 0) {
kvm_resched(vcpu);
- down_read(&vcpu->kvm->slots_lock);
+ idx = srcu_read_lock(&vcpu->kvm->srcu);
goto again;
}