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[35.195.168.105]) by smtp.gmail.com with ESMTPSA id j10sm30643193wrt.32.2021.05.12.05.34.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 12 May 2021 05:34:20 -0700 (PDT) Date: Wed, 12 May 2021 12:34:17 +0000 From: Quentin Perret To: Alexandre TORGUE Cc: Florian Fainelli , Ard Biesheuvel , Rob Herring , Greg Kroah-Hartman , Sasha Levin , stable , Arnd Bergmann , "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , "linux-kernel@vger.kernel.org" , Nicolas Boichat , Stephen Boyd , KarimAllah Ahmed , Android Kernel Team , Architecture Mailman List , Frank Rowand , linux-arm-kernel Subject: Re: [v5.4 stable] arm: stm32: Regression observed on "no-map" reserved memory region Message-ID: References: <001f8550-b625-17d2-85a6-98a483557c70@foss.st.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210512_053423_231729_70B76E84 X-CRM114-Status: GOOD ( 13.63 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wednesday 12 May 2021 at 12:55:53 (+0200), Alexandre TORGUE wrote: > We saw that patches [1] and [2] cause issue on stable version (at least for > 5.4). As you said issue can be seen with above device tree and check in > /proc/iomem than gpu_reserved region is taken by the kernel as "System RAM". > > On v5.10 stream there are no issues seen taking patches [1]&[2] and the > reason is linked to patches [3]&[4] which have been introduced in v5.10.0. > Reverting them give me the same behavior than on stable version. Thanks for confirming. Given that the patches were not really fixes, I think reverting is still the best option. I've sent reverts to -stable for 5.4 and prior: https://lore.kernel.org/stable/20210512122853.3243417-1-qperret@google.com/ Cheers, Quentin _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel