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Edgecombe" , Szabolcs Nagy , "H.J. Lu" , Florian Weimer , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Peter Zijlstra , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Valentin Schneider , Christian Brauner , Shuah Khan , linux-kernel@vger.kernel.org, Catalin Marinas , Will Deacon , jannh@google.com, Yury Khrustalev , Wilco Dijkstra , linux-kselftest@vger.kernel.org, linux-api@vger.kernel.org, Kees Cook Subject: Re: [PATCH RFT v11 1/8] arm64/gcs: Return a success value from gcs_alloc_thread_stack() Message-ID: References: <20241005-clone3-shadow-stack-v11-0-2a6a2bd6d651@kernel.org> <20241005-clone3-shadow-stack-v11-1-2a6a2bd6d651@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: <20241005-clone3-shadow-stack-v11-1-2a6a2bd6d651@kernel.org> 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 Acked-by: Deepak Gupta