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Date: Wed, 21 Feb 2024 18:16:36 +0000
From: Mark Brown <broonie@kernel.org>
To: Thiago Jung Bauermann <thiago.bauermann@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>, Jonathan Corbet <corbet@lwn.net>,
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Subject: Re: [PATCH v8 20/38] arm64/gcs: Ensure that new threads have a GCS
Message-ID: <9400cfc3-0e87-4abd-afbc-172736d77a1b@sirena.org.uk>
References: <20240203-arm64-gcs-v8-0-c9fec77673ef@kernel.org>
 <20240203-arm64-gcs-v8-20-c9fec77673ef@kernel.org>
 <874je399ld.fsf@linaro.org>
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On Mon, Feb 19, 2024 at 11:02:22PM -0300, Thiago Jung Bauermann wrote:
> Mark Brown <broonie@kernel.org> writes:

> > +		gcspr_el0 = addr + size - (2 * sizeof(u64));
> > +		if (!gcs_consume_token(tsk, gcspr_el0)) {

> Should this code validate the end of stack marker? Or doesn't it matter
> whether the marker is correct or not?

I don't think we specifically care, we're just looking for a token here.

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