linux-kernel - Re: [PATCH v9 05/39] arm64/gcs: Document the ABI for Guarded Control Stacks

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Message-ID: <87msmgu82q.fsf@linaro.org>
Date: Tue, 16 Jul 2024 22:21:33 -0300
From: Thiago Jung Bauermann <thiago.bauermann@...aro.org>
To: Mark Brown <broonie@...nel.org>
Cc: Catalin Marinas <catalin.marinas@....com>,  Will Deacon
 <will@...nel.org>,  Jonathan Corbet <corbet@....net>,  Andrew Morton
 <akpm@...ux-foundation.org>,  Marc Zyngier <maz@...nel.org>,  Oliver Upton
 <oliver.upton@...ux.dev>,  James Morse <james.morse@....com>,  Suzuki K
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  Shuah Khan <shuah@...nel.org>,  "Rick P. Edgecombe"
 <rick.p.edgecombe@...el.com>,  Deepak Gupta <debug@...osinc.com>,  Ard
 Biesheuvel <ardb@...nel.org>,  Szabolcs Nagy <Szabolcs.Nagy@....com>,
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  Albert Ou <aou@...s.berkeley.edu>,  Florian Weimer <fweimer@...hat.com>,
  Christian Brauner <brauner@...nel.org>,  Ross Burton
 <ross.burton@....com>,  linux-arm-kernel@...ts.infradead.org,
  linux-doc@...r.kernel.org,  kvmarm@...ts.linux.dev,
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Subject: Re: [PATCH v9 05/39] arm64/gcs: Document the ABI for Guarded
 Control Stacks

Mark Brown <broonie@...nel.org> writes:

> +3.  Allocation of Guarded Control Stacks
> +----------------------------------------
> +
> +* When GCS is enabled for a thread a new Guarded Control Stack will be
> +  allocated for it of size RLIMIT_STACK or 4 gigabytes, whichever is

s/4 gigabytes/2 gigabytes/

> +  smaller.

-- 
Thiago