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[217.229.29.45]) by smtp.gmail.com with ESMTPSA id o8sm8593281wma.1.2019.03.04.06.27.36 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Mon, 04 Mar 2019 06:27:36 -0800 (PST) Date: Mon, 4 Mar 2019 15:27:35 +0100 From: Thierry Reding To: Andrew Lunn Subject: Re: Unstable Kernel behavior on an ARM based board Message-ID: <20190304142735.GC24676@ulmo> References: <20190302110112.GA13405@1wt.eu> <20190302113651.zerdonykcvv5ex3e@shell.armlinux.org.uk> <20190302115729.zbowssfwf4j7jf22@shell.armlinux.org.uk> <20190302123907.qoe46qs6qmx7qnjs@shell.armlinux.org.uk> <453072a9-52e2-7591-750f-624ca27e0bbf@gmx.net> <20190304140042.GE26378@lunn.ch> MIME-Version: 1.0 In-Reply-To: <20190304140042.GE26378@lunn.ch> User-Agent: Mutt/1.11.3 (2019-02-01) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190304_062739_204045_A9B481A2 X-CRM114-Status: GOOD ( 12.69 ) 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: Embedded Engineer , linux-arm-kernel@lists.infradead.org Content-Type: multipart/mixed; boundary="===============0390080185286097031==" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org --===============0390080185286097031== Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="1ccMZA6j1vT5UqiK" Content-Disposition: inline --1ccMZA6j1vT5UqiK Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Mar 04, 2019 at 03:00:42PM +0100, Andrew Lunn wrote: > > Do you suggest board redesign is only option left? >=20 > Have you checked your cache configuration when you jump into the > kernel? >=20 > If i remember correctly, you need all caches turned off. I've had > problems with an ARM v5 system which got this wrong, left the caches > turned on, and so the kernel corrupted itself during startup. That's a good point. I vaguely remember this being an issue on Tegra a long time ago and given that U-Boot on this board seems to be fairly old it's not something I would exclude. Recent versions of U-Boot have that fixed, so might be worth upgrading to a later version for those as well. Thierry --1ccMZA6j1vT5UqiK Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEiOrDCAFJzPfAjcif3SOs138+s6EFAlx9NdcACgkQ3SOs138+ s6HIEw/+JuKgqJp4Q9QwfLUhPF3cLCAKDNU+xUNgXUhbKLz1ZWHrIQr4GWdI61Zu HhRfc773NWObNluotS6tZwwMbrXTxEYh7NluaIBknFoY4zcFulegCZ5oMImLWBIV 8D0WkIoWXIytZYO6cksWtSCtBDayX9L3Q6AU6brCteFGj49utZIyGpw6PfrJRwIo /j9xt7ca1TxQPDFzcTUKV8C28BA2kX2mH6LKhPaSU63nc3gBuu+Z/qgBC1hiYwpP VXwehmsX+5MCXMLV/ZLaCt/MGfxQYSb9yeej1ykVn5QQ4Z419HPwwkp3EBTG5mAg 1lHaY9smHvOomE+j+5liB6YYkj1Zn2UyywcuW5KCveFU6vjarP/6UgXri1RUJV7r SPtYF3e87NvNuAmGmt4Cy0uXqmt90BnPFStcf2wkmdSjgf3T/18PP20ZphvajTor Eko0znY431z01mCVPkdGzWZe7i8H8Mhn7nknKmqnivQKpEJLjHhfWFq8Bq6Szno6 jkaLFwaqyZestLhxqHGHDne39zr6GIAxRylPSAOROxVNjYZHQQDIuJ5iPxwaYQi4 TW6eQE3vewsk+WNQTZd8vv/I73fjdSWfXfC/DbLVwlp5UjdSf16QKSkvTKFvEMQa kcmu5SeJ0sujDkgEVPmWqg1Dfnx4LI5r/Kye/c5BkWqB2fGz4Cw= =M3Ba -----END PGP SIGNATURE----- --1ccMZA6j1vT5UqiK-- --===============0390080185286097031== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel --===============0390080185286097031==--