On Tue, 27 Aug 2024 16:25:06 +0100, Marc Zyngier wrote:
> It recently appeared that, when running on a GICv3-equipped platform
> (which is what non-ancient arm64 HW has), *not* configuring a GICv3
> for the guest could result in less than desirable outcomes.
>
> We have multiple issues to fix:
>
> - for registers that *always* trap (the SGI registers) or that *may*
> trap (the SRE register), we need to check whether a GICv3 has been
> instantiated before acting upon the trap.
>
> [...]
Applied to next, thanks!
[01/11] KVM: arm64: Move GICv3 trap configuration to kvm_calculate_traps()
commit: d2137ba8d8fe56cd2470c82b98e494cbcababd76
[02/11] KVM: arm64: Force SRE traps when SRE access is not enabled
commit: 5739a961b542530626cb3afb721efa688b290cce
[03/11] KVM: arm64: Force GICv3 trap activation when no irqchip is configured on VHE
commit: 8d917e0a8651377321c06513f42e2ab9a86161f4
[04/11] KVM: arm64: Add helper for last ditch idreg adjustments
commit: 795a0bbaeee2aa993338166bc063fe3c89373d2a
[05/11] KVM: arm64: Zero ID_AA64PFR0_EL1.GIC when no GICv3 is presented to the guest
commit: 5cb57a1aff7551bcb3b800d33141b06ef0ac178b
[06/11] KVM: arm64: Add ICH_HCR_EL2 to the vcpu state
commit: 9f5deace58da737d67ec9c2d23534a475be68481
[07/11] KVM: arm64: Add trap routing information for ICH_HCR_EL2
commit: 15a1ba8d049855c5ae454c84e6dd2d7657bacbe8
[08/11] KVM: arm64: Honor guest requested traps in GICv3 emulation
commit: 59af011d001b836aa52a3dbb5c54daf6fffb511e
[09/11] KVM: arm64: Make most GICv3 accesses UNDEF if they trap
commit: 4a999a1d7ae52592723a9a219aaa7a3406d66dd6
[10/11] KVM: arm64: Unify UNDEF injection helpers
commit: cd08d3216fc4e684f05fe4cf696a275a975f6499
[11/11] KVM: arm64: Add selftest checking how the absence of GICv3 is handled
commit: de2e75209303b98d3169a249a1bc847be9657d9b
Cheers,
M.
--
Without deviation from the norm, progress is not possible.
