linux-kernel - Re: [PATCH v15 1/6] arm64/gcs: Ensure FGTs for EL1 GCS instructions are disabled

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Message-ID: <87h5y1k4q9.wl-maz@kernel.org>
Date: Wed, 20 Aug 2025 23:28:30 +0100
From: Marc Zyngier <maz@...nel.org>
To: Mark Brown <broonie@...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 v15 1/6] arm64/gcs: Ensure FGTs for EL1 GCS instructions are disabled

On Wed, 20 Aug 2025 23:24:24 +0100,
Marc Zyngier <maz@...nel.org> wrote:
> 
> On Wed, 20 Aug 2025 15:14:41 +0100,
> Mark Brown <broonie@...nel.org> wrote:
> > 
> > The initial EL2 setup for GCS did not include disabling of EL1 usage of
> > GCS instructions, also disable these traps.  This is the first disabling
> > of instruction traps, use x2 to store the value to be written.
> 
> Written where?

Gah, I was looking at 6.16, not 6.17-rc1.

Apologies for the noise.

	M.

-- 
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