From: Marc Zyngier <maz@kernel.org>
To: Oliver Upton <oliver.upton@linux.dev>
Cc: Miguel Luis <miguel.luis@oracle.com>,
"kvmarm@lists.linux.dev" <kvmarm@lists.linux.dev>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
Eric Auger <eric.auger@redhat.com>,
James Morse <james.morse@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Zenghui Yu <yuzenghui@huawei.com>
Subject: Re: [PATCH 5/5] KVM: arm64: Handle AArch32 SPSR_{irq,abt,und,fiq} as RAZ/WI
Date: Wed, 25 Oct 2023 09:49:39 +0100 [thread overview]
Message-ID: <86edhj3x3w.wl-maz@kernel.org> (raw)
In-Reply-To: <ZTjV1Q05nXXOOyVO@linux.dev>
On Wed, 25 Oct 2023 09:46:13 +0100,
Oliver Upton <oliver.upton@linux.dev> wrote:
>
> To your point, the SPSR_* accessors still trap even if AArch32 is not
> implemented. I was suggesting in passing that it'd be nice if the
> architecture alternatively allowed for these to read as RES0 (no trap)
> if NV==1 and AArch32 is not implemented, which aligns with your change.
Ah, I see what you mean now. Yeah, I'll put that on the bucket list of
things I need to write up. It has quite a few entries already, and I
really should get to it.
Thanks,
M.
--
Without deviation from the norm, progress is not possible.
next prev parent reply other threads:[~2023-10-25 8:49 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-23 9:54 [PATCH 0/5] KVM: arm64: NV trap forwarding fixes Marc Zyngier
2023-10-23 9:54 ` [PATCH 1/5] arm64: Add missing _EL12 encodings Marc Zyngier
2023-10-23 9:54 ` [PATCH 2/5] arm64: Add missing _EL2 encodings Marc Zyngier
2023-10-23 9:54 ` [PATCH 3/5] KVM: arm64: Refine _EL2 system register list that require trap reinjection Marc Zyngier
2023-10-23 9:54 ` [PATCH 4/5] KVM: arm64: Do not let a L1 hypervisor access the *32_EL2 sysregs Marc Zyngier
2023-10-23 9:54 ` [PATCH 5/5] KVM: arm64: Handle AArch32 SPSR_{irq,abt,und,fiq} as RAZ/WI Marc Zyngier
2023-10-23 18:55 ` Miguel Luis
2023-10-24 17:25 ` Marc Zyngier
2023-10-24 22:41 ` Oliver Upton
2023-10-24 23:04 ` Oliver Upton
2023-10-25 8:28 ` Marc Zyngier
2023-10-25 8:46 ` Oliver Upton
2023-10-25 8:49 ` Marc Zyngier [this message]
2023-10-25 10:44 ` Miguel Luis
2023-10-25 6:40 ` [PATCH 0/5] KVM: arm64: NV trap forwarding fixes Oliver Upton
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