linux-kernel - Re: [PATCH RFT v11 1/8] arm64/gcs: Return a success value from gcs_alloc_thread

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Message-ID: <ZyKhFSb4N0WVNFQY@debug.ba.rivosinc.com>
Date: Wed, 30 Oct 2024 14:11:49 -0700
From: Deepak Gupta <debug@...osinc.com>
To: Mark Brown <broonie@...nel.org>
Cc: "Rick P. Edgecombe" <rick.p.edgecombe@...el.com>,
	Szabolcs Nagy <Szabolcs.Nagy@....com>,
	"H.J. Lu" <hjl.tools@...il.com>,
	Florian Weimer <fweimer@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
	"H. Peter Anvin" <hpa@...or.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Juri Lelli <juri.lelli@...hat.com>,
	Vincent Guittot <vincent.guittot@...aro.org>,
	Dietmar Eggemann <dietmar.eggemann@....com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>,
	Valentin Schneider <vschneid@...hat.com>,
	Christian Brauner <brauner@...nel.org>,
	Shuah Khan <shuah@...nel.org>, linux-kernel@...r.kernel.org,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>, jannh@...gle.com,
	Yury Khrustalev <yury.khrustalev@....com>,
	Wilco Dijkstra <wilco.dijkstra@....com>,
	linux-kselftest@...r.kernel.org, linux-api@...r.kernel.org,
	Kees Cook <kees@...nel.org>
Subject: Re: [PATCH RFT v11 1/8] arm64/gcs: Return a success value from
 gcs_alloc_thread_stack()

On Sat, Oct 05, 2024 at 11:31:28AM +0100, Mark Brown wrote:
>Currently as a result of templating from x86 code gcs_alloc_thread_stack()
>returns a pointer as an unsigned int however on arm64 we don't actually use
>this pointer value as anything other than a pass/fail flag. Simplify the
>interface to just return an int with 0 on success and a negative error code
>on failure.
>
>Signed-off-by: Mark Brown <broonie@...nel.org>
Acked-by: Deepak Gupta <debug@...osinc.com>