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| author | Marc Zyngier <maz@kernel.org> | 2022-04-05 21:23:27 +0300 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2022-05-04 16:09:53 +0300 |
| commit | 49a1a2c70a7fd820fe60a65a3e38ab9095082dc9 (patch) | |
| tree | d9d3e7cf5b54c8c3fd49faca4bfd646a0b036a4b /include/kvm/arm_vgic.h | |
| parent | 4645d11f4a5538ec1221f36e397cfb0115718ffe (diff) | |
| download | linux-49a1a2c70a7fd820fe60a65a3e38ab9095082dc9.tar.xz | |
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/arm_vgic.h')
| -rw-r--r-- | include/kvm/arm_vgic.h | 3 |
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; |