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KVM: arm/arm64: vgic-its: Invalidate MSI-LPI translation cache on ITS disable

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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.

Tested-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
This commit is contained in:
Marc Zyngier 2019-05-22 18:16:49 +01:00
parent b4931afcde
commit 363518f37a
1 changed files with 2 additions and 0 deletions
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virt/kvm/arm/vgic/vgic-its.c
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@ -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