| Message ID | 20190725153543.24386-7-maz@kernel.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | KVM: arm/arm64: vgic: ITS translation cache | expand |
Hi Marc, On 7/25/19 5:35 PM, Marc Zyngier wrote: > From: Marc Zyngier <marc.zyngier@arm.com> > > If an ITS gets disabled, we need to make sure that further interrupts > won't hit in the cache. For that, we invalidate the translation cache > when the ITS is disabled. > > Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Reviewed-by: Eric Auger <eric.auger@redhat.com> Eric > --- > virt/kvm/arm/vgic/vgic-its.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c > index 09a179820816..05406bd92ce9 100644 > --- a/virt/kvm/arm/vgic/vgic-its.c > +++ b/virt/kvm/arm/vgic/vgic-its.c > @@ -1597,6 +1597,8 @@ static void vgic_mmio_write_its_ctlr(struct kvm *kvm, struct vgic_its *its, > goto out; > > its->enabled = !!(val & GITS_CTLR_ENABLE); > + if (!its->enabled) > + vgic_its_invalidate_cache(kvm); > > /* > * Try to process any pending commands. This function bails out early >
diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c index 09a179820816..05406bd92ce9 100644 --- a/virt/kvm/arm/vgic/vgic-its.c +++ b/virt/kvm/arm/vgic/vgic-its.c @@ -1597,6 +1597,8 @@ static void vgic_mmio_write_its_ctlr(struct kvm *kvm, struct vgic_its *its, goto out; its->enabled = !!(val & GITS_CTLR_ENABLE); + if (!its->enabled) + vgic_its_invalidate_cache(kvm); /* * Try to process any pending commands. This function bails out early