On Thu, 20 Feb 2025 13:48:53 +0000, Marc Zyngier wrote:
> Since the previous incarnation of the ABI was proved to be subtly
> wrong, I have reworked it to be more in line with the current way KVM
> operates.
>
> No more late NV-specific adjustment nor writable ID_AA64MMFR0_EL1.VH.
> The NV configuration is now entirely selected from the vcpu flags.
> I've preserved the KVM_ARM_VCPU_EL2 flag which enables NV with VHE,
> and added KVM_ARM_VCPU_EL2_E2H0 which alters the NV behaviour to only
> allow nVHE guests without recursive NV support.
>
> [...]
I fixed up the typos, including the one that breaks bisection. Can
always back this out if anything is out of place.
Applied to next, thanks!
[01/14] arm64: cpufeature: Handle NV_frac as a synonym of NV2
https://git.kernel.org/kvmarm/kvmarm/c/88aea41b9bc5
[02/14] KVM: arm64: Hide ID_AA64MMFR2_EL1.NV from guest and userspace
https://git.kernel.org/kvmarm/kvmarm/c/9d6745572899
[03/14] KVM: arm64: Mark HCR.EL2.E2H RES0 when ID_AA64MMFR1_EL1.VH is zero
https://git.kernel.org/kvmarm/kvmarm/c/d9f943f76506
[04/14] KVM: arm64: Mark HCR.EL2.{NV*,AT} RES0 when ID_AA64MMFR4_EL1.NV_frac is 0
https://git.kernel.org/kvmarm/kvmarm/c/8f8d6084f5b5
[05/14] KVM: arm64: Advertise NV2 in the boot messages
https://git.kernel.org/kvmarm/kvmarm/c/2cd9542a375a
[06/14] KVM: arm64: Consolidate idreg callbacks
https://git.kernel.org/kvmarm/kvmarm/c/57e7de2650c8
[07/14] KVM: arm64: Make ID_REG_LIMIT_FIELD_ENUM() more widely available
https://git.kernel.org/kvmarm/kvmarm/c/179fd7e30f04
[08/14] KVM: arm64: Enforce NV limits on a per-idregs basis
https://git.kernel.org/kvmarm/kvmarm/c/e7ef6ed4583e
[09/14] KVM: arm64: Move NV-specific capping to idreg sanitisation
https://git.kernel.org/kvmarm/kvmarm/c/94f296dcd6d9
[10/14] KVM: arm64: Allow userspace to limit NV support to nVHE
https://git.kernel.org/kvmarm/kvmarm/c/f83c41fb3ddd
[11/14] KVM: arm64: Make ID_AA64MMFR4_EL1.NV_frac writable
https://git.kernel.org/kvmarm/kvmarm/c/642c23ea8b45
[12/14] KVM: arm64: Advertise FEAT_ECV when possible
https://git.kernel.org/kvmarm/kvmarm/c/8b0b98ebf34d
--
Best,
Oliver
