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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 /arch/arm64/kvm/vgic/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 'arch/arm64/kvm/vgic/vgic.h')
| -rw-r--r-- | arch/arm64/kvm/vgic/vgic.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm64/kvm/vgic/vgic.h b/arch/arm64/kvm/vgic/vgic.h index 1d04a900f3e3..4c6bdd321faa 100644 --- a/arch/arm64/kvm/vgic/vgic.h +++ b/arch/arm64/kvm/vgic/vgic.h @@ -98,6 +98,11 @@ #define DEBUG_SPINLOCK_BUG_ON(p) #endif +static inline u32 vgic_get_implementation_rev(struct kvm_vcpu *vcpu) +{ + return vcpu->kvm->arch.vgic.implementation_rev; +} + /* Requires the irq_lock to be held by the caller. */ static inline bool irq_is_pending(struct vgic_irq *irq) { |