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| author | Alexander Graf <agraf@suse.de> | 2009-12-21 19:21:24 (GMT) |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2010-03-01 15:35:42 (GMT) |
| commit | 7706664d39a8eb8555408a24b1f17bd2086189c6 (patch) | |
| tree | c71bde99ac96573e137c29f990e0af4c1854b4df /arch/powerpc/kvm/booke.c | |
| parent | 583617b7866cfcc0b3830a4b7ab20f218d180f67 (diff) | |
| download | linux-fsl-qoriq-7706664d39a8eb8555408a24b1f17bd2086189c6.tar.xz | |
KVM: powerpc: Improve DEC handling
We treated the DEC interrupt like an edge based one. This is not true for
Book3s. The DEC keeps firing until mtdec is issued again and thus clears
the interrupt line.
So let's implement this logic in KVM too. This patch moves the line clearing
from the firing of the interrupt to the mtdec emulation.
This makes PPC64 guests work without AGGRESSIVE_DEC defined.
Signed-off-by: Alexander Graf <agraf@suse.de>
Acked-by: Acked-by: Hollis Blanchard <hollis@penguinppc.org>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/powerpc/kvm/booke.c')
| -rw-r--r-- | arch/powerpc/kvm/booke.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c index 06f5a9e..d8b6342 100644 --- a/arch/powerpc/kvm/booke.c +++ b/arch/powerpc/kvm/booke.c @@ -97,6 +97,11 @@ int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu) return test_bit(BOOKE_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions); } +void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu) +{ + clear_bit(BOOKE_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions); +} + void kvmppc_core_queue_external(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq) { |