KVM: arm/arm64: vgic: Add LPI translation cache definition

Add the basic data structure that expresses an MSI to LPI
translation as well as the allocation/release hooks.

The size of the cache is arbitrarily defined as 16*nr_vcpus.

Tested-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/kvm/arm_vgic.h b/include/kvm/arm_vgic.h
index 7a30524a80ee..ded50a30e2d5 100644
--- a/include/kvm/arm_vgic.h
+++ b/include/kvm/arm_vgic.h
@@ -249,6 +249,9 @@ struct vgic_dist {
         struct list_head        lpi_list_head;
         int                     lpi_list_count;
 
+        /* LPI translation cache */
+        struct list_head        lpi_translation_cache;
+
         /* used by vgic-debug */
         struct vgic_state_iter *iter;