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

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To: Mark Brown <broonie@xxxxxxxxxx>
Subject: Re: [PATCH v9 05/39] arm64/gcs: Document the ABI for Guarded Control Stacks
From: Thiago Jung Bauermann <thiago.bauermann@xxxxxxxxxx>
Date: Tue, 16 Jul 2024 22:21:33 -0300
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>, Will Deacon <will@xxxxxxxxxx>, Jonathan Corbet <corbet@xxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Marc Zyngier <maz@xxxxxxxxxx>, Oliver Upton <oliver.upton@xxxxxxxxx>, James Morse <james.morse@xxxxxxx>, Suzuki K Poulose <suzuki.poulose@xxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx>, Oleg Nesterov <oleg@xxxxxxxxxx>, Eric Biederman <ebiederm@xxxxxxxxxxxx>, Shuah Khan <shuah@xxxxxxxxxx>, "Rick P. Edgecombe" <rick.p.edgecombe@xxxxxxxxx>, Deepak Gupta <debug@xxxxxxxxxxxx>, Ard Biesheuvel <ardb@xxxxxxxxxx>, Szabolcs Nagy <Szabolcs.Nagy@xxxxxxx>, Kees Cook <kees@xxxxxxxxxx>, "H.J. Lu" <hjl.tools@xxxxxxxxx>, Paul Walmsley <paul.walmsley@xxxxxxxxxx>, Palmer Dabbelt <palmer@xxxxxxxxxxx>, Albert Ou <aou@xxxxxxxxxxxxxxxxx>, Florian Weimer <fweimer@xxxxxxxxxx>, Christian Brauner <brauner@xxxxxxxxxx>, Ross Burton <ross.burton@xxxxxxx>, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, linux-doc@xxxxxxxxxxxxxxx, kvmarm@xxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, linux-arch@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, linux-kselftest@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-riscv@xxxxxxxxxxxxxxxxxxx
In-reply-to: <20240625-arm64-gcs-v9-5-0f634469b8f0@kernel.org> (Mark Brown's message of "Tue, 25 Jun 2024 15:57:33 +0100")

Mark Brown <broonie@xxxxxxxxxx> 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

References:
- [PATCH v9 00/39] arm64/gcs: Provide support for GCS in userspace
  - From: Mark Brown
- [PATCH v9 05/39] arm64/gcs: Document the ABI for Guarded Control Stacks
  - From: Mark Brown

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