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authorMarc Zyngier <maz@kernel.org>2022-04-05 19:23:27 +0100
committerMarc Zyngier <maz@kernel.org>2022-05-04 14:09:53 +0100
commit49a1a2c70a7fd820fe60a65a3e38ab9095082dc9 (patch)
treed9d3e7cf5b54c8c3fd49faca4bfd646a0b036a4b /include/kvm
parent4645d11f4a5538ec1221f36e397cfb0115718ffe (diff)
KVM: arm64: vgic-v3: Advertise GICR_CTLR.{IR, CES} as a new GICD_IIDR revision
Since adversising GICR_CTLR.{IC,CES} is directly observable from a guest, we need to make it selectable from userspace. For that, bump the default GICD_IIDR revision and let userspace downgrade it to the previous default. For GICv2, the two distributor revisions are strictly equivalent. Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20220405182327.205520-5-maz@kernel.org
Diffstat (limited to 'include/kvm')
-rw-r--r--include/kvm/arm_vgic.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/kvm/arm_vgic.h b/include/kvm/arm_vgic.h
index 401236f97cf2..2d8f2e90edc2 100644
--- a/include/kvm/arm_vgic.h
+++ b/include/kvm/arm_vgic.h
@@ -231,6 +231,9 @@ struct vgic_dist {
/* Implementation revision as reported in the GICD_IIDR */
u32 implementation_rev;
+#define KVM_VGIC_IMP_REV_2 2 /* GICv2 restorable groups */
+#define KVM_VGIC_IMP_REV_3 3 /* GICv3 GICR_CTLR.{IW,CES,RWP} */
+#define KVM_VGIC_IMP_REV_LATEST KVM_VGIC_IMP_REV_3
/* Userspace can write to GICv2 IGROUPR */
bool v2_groups_user_writable;