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[24.20.82.131]) by smtp.gmail.com with ESMTPSA id a19-v6sm1970655qta.50.2018.07.17.14.12.50 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 17 Jul 2018 14:12:51 -0700 (PDT) Subject: Re: [PATCH] powerpc/msi: Remove VLA usage To: Kees Cook , Benjamin Herrenschmidt Cc: Rob Herring , Randy Dunlap , linux-kernel@vger.kernel.org, Paul Mackerras , Tyrel Datwyler , Andrew Morton , linuxppc-dev@lists.ozlabs.org, Ingo Molnar References: <20180629185254.GA37557@beast> From: Tyrel Datwyler Message-ID: <911632d5-b54c-b632-75d9-7628a0cfc490@gmail.com> Date: Tue, 17 Jul 2018 14:12:49 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.8.0 MIME-Version: 1.0 In-Reply-To: <20180629185254.GA37557@beast> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 06/29/2018 11:52 AM, Kees Cook wrote: > In the quest to remove all stack VLA usage from the kernel[1], this > switches from an unchanging variable to a constant expression to eliminate > the VLA generation. > > [1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.com > > Cc: Benjamin Herrenschmidt > Cc: Paul Mackerras > Cc: Michael Ellerman > Cc: Andrew Morton > Cc: Randy Dunlap > Cc: Tyrel Datwyler > Cc: Rob Herring > Cc: Ingo Molnar > Cc: linuxppc-dev@lists.ozlabs.org > Signed-off-by: Kees Cook > --- Reviewed-by: Tyrel Datwyler