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Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.2 #3 (Red Hat Linux)) id 1iG4uE-0006to-2H; Thu, 03 Oct 2019 17:28:46 +0000 Received: from mout.gmx.net ([212.227.15.15]) by bombadil.infradead.org with esmtps (Exim 4.92.2 #3 (Red Hat Linux)) id 1iG4uB-0006sz-5O for linux-arm-kernel@lists.infradead.org; Thu, 03 Oct 2019 17:28:44 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1570123715; bh=1/9ytc+GiSYLmzLUQTHXod+HPAelk3SiwurUk+Qr1yw=; h=X-UI-Sender-Class:Subject:To:Cc:References:From:Date:In-Reply-To; b=CJYOeogBGQo0GZboKNzoPTNFGJP7gyTe8ysUI62iHOFyQnMY/RnxxLPJXFY3m6aVU LoTHWUKCu1EBTOKHcImQvCF7pGjJ1bhUlh7jiJmQe4t+EjMIAidDjTbuVrYLfx7vYC w/NihBJnoa8wfRFhVXlCTAk5cLTu2mniycEzcyRo= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from [192.168.1.162] ([37.4.249.116]) by mail.gmx.com (mrgmx005 [212.227.17.190]) with ESMTPSA (Nemesis) id 1Mt75H-1i19Lu1F6X-00tPuP; Thu, 03 Oct 2019 19:28:35 +0200 Subject: Re: [PATCH] ARM: dt: check MPIDR on MP devices built without SMP To: Nicolas Saenz Julienne , linux-kernel@vger.kernel.org References: <20191002114508.1089-1-nsaenzjulienne@suse.de> From: Stefan Wahren Message-ID: Date: Thu, 3 Oct 2019 19:28:33 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <20191002114508.1089-1-nsaenzjulienne@suse.de> Content-Language: en-US X-Provags-ID: V03:K1:sY96XPCdbmODy3ENQlqjYJoCke2gtAyeaRHQ/ewzjOXNOxvx0/A qbuh9Z8YocIKS/wvcaobPGkEZeoW4UtoD0zFjrSOTvzB2S3MjUxsBhQ0ELhAx8mZNPUS83w sJU+6SLWL1qvXoaSnaGzdmjFYgEz2yAcUD6v3dnb7VNTV1KVvYl8aChNgpanuSYxw6Ooejb lzhdZTT81abj3HPqjb7Ig== X-UI-Out-Filterresults: notjunk:1;V03:K0:F8KbZNVHwWY=:JS9pNupe6kR583TYXbT6TH UaYtQkAAEYgrXx7mWwajxIETZwCTKTyfva4pSeSaX7cazQDSxqwSsPJhjS7cdcmmy9sQaI/Kl ZPUIbAvFllW1gJeQclovYN+ID6gkzaMlTkpntqQdFOiqMwdB9kWBRlwLWd/Os2Lt/HtjqTsH7 clN650pzstI/5hsZgQv0a3EQ/DxCvRpY/8uGnREMtW9ZPBI/0OIMfqsbPugdM7C64PqPlmL4U Be7tTEsnYYjwkbnyujZv9BQzfhgJlk8P0pvNoPca8hexkDfh+wJktFtScnPyBk8jQpKNNqJ1U qEWDDfTPEKAGox6UXUphWMe4YYSZAnQ279D2rkSiX7r6tRGUjVaXnBoQ5DyK/zdz7U5hwKrdx H9pJq1WTRnxyWfLEd2SjStCS21pTbrVjmUkhfSH2t3XlTUX7Pogzel3vB4Oi9m1CEcRzqc0+J PD1410f+rGm3bogyd74o8CoeLRjexA1BH3Jkh8mK2HnNMq2RxvV27KZuAyU3wXPxSuNTG6tYQ G74aUtPwn99fsFNLvFfSDjnlJLePz0oOWkHkkFe3xckF09Y/CXopTtHqVC/mQa2GnxfTF71qK WWMtgGBAEjPsVZBr/T6V0GVhdRt9+36/OGfBX+d9NVoZIK0om+hY6X17Ia8eH6syUhSH1xtn3 +HuqlQRJhrAaz8/6JqAtJIlG6VLlVj1gaYk+CHTIF3EheK4TtFZN0lGe+i7zEKvHbplLAqFca NwZEgiXI+KrRZMEtRTUcET8luQRjYcvMMDySRsAgs8oF4vHpgh1APRkDI5MDHZ1ElOHVH+y4d a7krHpVFk1jDG4Ys5MIz9qqNQBmrI7BQP2dXnTKRqzqUQ4hU4SAqe5KOOEVF/t3A+xu8G2Rhh MNenCWNqmHz2whisbbp691OBNxgoyfmkjuN6HNUrDuYIJduP470F2eEl+FMt6/YYR81rao86a llJwZcWjVcfqdRXISg1Zts5SYFaX1p9dR2/QP0oQIx6cuME3WurlroEaZbCDvxRFRceKYYHLv d0qxN6w6yhr40yA/z6uYWDXed1uC7op1mBAAcdY2VmScyOTYhrcAh1905754n7hkHSui+54WF kFgiSrnuft9aeSd957wKJM77N8Sy9yK9folc2RmpjN1vWWGyIbiUGmfJPLyw/kpv/JMCPLuNM 8WG0zHrZlsx+0mC7feEPs/WQizIYfHZ2EpuImNcxT5R9IiSVGlEH4BXuHzAvyY88i65WfOyEy rJH4oBbAkzVsVbea10jG63+VJPQC75sq9fo33wFraGHKOPztjKmjBqLRpleQ= X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191003_102843_499932_A5EDCA12 X-CRM114-Status: GOOD ( 14.81 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arm-kernel@lists.infradead.org, Russell King , "kernelci.org bot" 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 Am 02.10.19 um 13:45 schrieb Nicolas Saenz Julienne: > Currently, in arm_dt_init_cpu_maps(), the hwid of the boot CPU is read > from MPIDR on SMP devices and set to 0 for non SMP. This value is then > matched with the DT cpu nodes' reg property in order to find the boot > CPU in DT. > > On MP devices build without SMP the cpu DT node contains the expected > MPIDR yet the hwid is set to 0. With this the function fails to match > the cpus and uses the default CPU logical map. Making it impossible to > get the CPU's DT node further down the line. This causes issues with > cpufreq-dt, as it triggers warnings when not finding a suitable DT node > on CPU0. > > Change the way we choose whether to get MPIDR or not. Instead of > depending on SMP check the number of CPUs defined in DT. Anything > 1 > means MPIDR will be available. > > This was seen on a Raspberry Pi 2 build with bcm2835_defconfig. > > Reported-by: "kernelci.org bot" > Signed-off-by: Nicolas Saenz Julienne > --- Tested-by: Stefan Wahren Thanks _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel