KVM: arm/arm64: vgic-its: Check the LPI translation cache on MSI injection
When performing an MSI injection, let's first check if the translation is already in the cache. If so, let's inject it quickly without going through the whole translation process. Tested-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Eric Auger <eric.auger@redhat.com> Signed-off-by: Marc Zyngier <maz@kernel.org>
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