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| author | Marcelo Tosatti <mtosatti@redhat.com> | 2009-12-23 14:35:25 -0200 |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2010-03-01 12:35:45 -0300 |
| commit | f656ce0185cabbbb0cf96877306879661297c7ad (patch) | |
| tree | e2c8e61642ae4849c901922552a1acf0112461b4 /arch/ia64 | |
| parent | e93f8a0f821e290ac5149830110a5f704db7a1fc (diff) | |
| download | kernel-common-f656ce0185cabbbb0cf96877306879661297c7ad.tar.gz kernel-common-f656ce0185cabbbb0cf96877306879661297c7ad.tar.bz2 kernel-common-f656ce0185cabbbb0cf96877306879661297c7ad.zip | |
KVM: switch vcpu context to use SRCU
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch/ia64')
| -rw-r--r-- | arch/ia64/kvm/kvm-ia64.c | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c index d0ad538f0083..d5e384641275 100644 --- a/arch/ia64/kvm/kvm-ia64.c +++ b/arch/ia64/kvm/kvm-ia64.c @@ -636,12 +636,9 @@ static void kvm_vcpu_post_transition(struct kvm_vcpu *vcpu) 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 @@ again: 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 @@ again: 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 @@ again: } 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; } |