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

… disable 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 <[email protected]> Reviewed-by: Eric Auger <[email protected]> Signed-off-by: Marc Zyngier <[email protected]>
wafgo · Aug 18, 2019 · 363518f · 363518f
1 parent b4931af
commit 363518f
Showing 1 changed file with 2 additions and 0 deletions.
diff --git 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