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[70.82.104.228]) by smtp.gmail.com with ESMTPSA id v57sm14440655qtv.80.2019.02.11.07.57.38 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Mon, 11 Feb 2019 07:57:39 -0800 (PST) Date: Mon, 11 Feb 2019 10:57:38 -0500 (EST) From: Nicolas Pitre To: Stuart Menefy Subject: Re: [PATCH] ARM: MCPM: Add provision for platform specific wfi alternative In-Reply-To: Message-ID: References: <20190210231212.20470-1-stuart.menefy@mathembedded.com> User-Agent: Alpine 2.21 (LFD 202 2017-01-01) MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190211_075741_432981_89804999 X-CRM114-Status: GOOD ( 17.61 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, Will Deacon , Russell King , Arnd Bergmann Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, 11 Feb 2019, Stuart Menefy wrote: > Folks > > On Sun, 10 Feb 2019 at 23:12, Stuart Menefy > wrote: > > > > On some platforms (in particular the Exynos5260) the wfi is not > > executed directly by the operating system but by trapping into the > > secure monitor. This allows us to replicate the behaviour of the > > vendor supplied kernel using the MCPM framework. > > > > Signed-off-by: Stuart Menefy > > I forgot to add, this is a part of a series of patches which updates > the Exynos 5260 > support, allowing use of the kernel on secure parts and adding suspend > functionality, > Version 1 of the patches has been posted to the samsung-soc mailing list: > https://www.spinics.net/lists/linux-samsung-soc/#65035 > and I'm just about to post version 2. However as this is the only patch which > touches generic ARM files I though I'd better check the approach is acceptable > to a wider audience. I was about to ask that you also post those patches making use of this change. It is not possible to evaluate if the approach makes sense without seeing how it is used. Nicolas _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel