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Thu, 07 Nov 2024 05:55:12 -0800 (PST) MIME-Version: 1.0 References: <20241014-armv7-cacheinfo-v2-0-38ab76d2b7fa@linaro.org> <20241014-armv7-cacheinfo-v2-2-38ab76d2b7fa@linaro.org> In-Reply-To: <20241014-armv7-cacheinfo-v2-2-38ab76d2b7fa@linaro.org> From: Linus Walleij Date: Thu, 7 Nov 2024 14:55:01 +0100 Message-ID: Subject: Re: [PATCH v2 2/2] ARM: implement cacheinfo support To: Dmitry Baryshkov Cc: Sudeep Holla , Ard Biesheuvel , Russell King , linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Bjorn Andersson , Konrad Dybcio , Arnd Bergmann Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241107_055515_777632_D28C5756 X-CRM114-Status: GOOD ( 10.67 ) 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Oct 14, 2024 at 3:56=E2=80=AFPM Dmitry Baryshkov wrote: > On ARMv7 / v7m machines read CTR and CLIDR registers to provide > information regarding the cache topology. Earlier machines should > describe full cache topology in the device tree. > > Note, this follows the ARM64 cacheinfo support and provides only minimal > support required to bootstrap cache info. All useful properties should > be decribed in Device Tree. > > Signed-off-by: Dmitry Baryshkov It's really neat actually! Reviewed-by: Linus Walleij Yours, Linus Walleij