linux-kernel - Re: [PATCH v16 2/6] KVM: arm64: Manage GCS access and registers for guests

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Message-ID: <aMRU3zCRpA4Zuj0L@finisterre.sirena.org.uk>
Date: Fri, 12 Sep 2025 18:14:07 +0100
From: Mark Brown <broonie@...nel.org>
To: Marc Zyngier <maz@...nel.org>
Cc: Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>,
	Oliver Upton <oliver.upton@...ux.dev>,
	Joey Gouly <joey.gouly@....com>,
	Suzuki K Poulose <suzuki.poulose@....com>,
	Shuah Khan <shuah@...nel.org>, linux-arm-kernel@...ts.infradead.org,
	linux-doc@...r.kernel.org, kvmarm@...ts.linux.dev,
	linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v16 2/6] KVM: arm64: Manage GCS access and registers for
 guests

On Fri, Sep 12, 2025 at 05:33:39PM +0100, Mark Brown wrote:
> On Fri, Sep 12, 2025 at 12:59:23PM +0100, Marc Zyngier wrote:

> > Just like the previous version, you're missing the accessors that
> > would be this table useful. Meaning that the vcpu_read_sys_reg() and
> > vcpu_write_sys_reg() accessors will fail for all 4 GSC registers.

> Just to confirm, this is __vcpu_{read,write}_sysreg()?

Sorry, that should have been __vcpu_{read,write}_sys_reg_{to,from}_cpu()
*sigh*

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