From mboxrd@z Thu Jan 1 00:00:00 1970 From: Markus Pietrek Date: Thu, 03 Dec 2009 12:36:38 +0000 Subject: Probably cache synchronization issue on SH7723 Message-Id: <4B17B0D6.6020105@emtrion.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable To: linux-sh@vger.kernel.org Hello, when starting bigger graphical applications they suddenly stop with a=20 segmentation fault or a bus error. If I execute the application a second=20 time, everything is fine. Applications that are linked to shared=20 libraries are more likely to fail than statically linked applications. Changing the cache from write-back to write-through fixes it. Maybe the=20 instruction cache and the data cache are not synchronized correctly? I didn't have this problem with the linux-2.6.29 vanilla kernel.=20 2.6.32rc2 from=20 git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 introduced=20 it. And after a pull yesterday even /bin/init is failing. On 9th Oct 2009, there was a similar bug report for the sh7785lcr. Does=20 this platform now work? Mit freundlichen Gr=FC=DFen / Best Regards Markus Pietrek Software engineer --=20 emtrion GmbH Greschbachstr. 12 76229 Karlsruhe GERMANY Phone +49 721 62725-45 Fax +49 721 62725-19 E-mail Markus.Pietrek@emtrion.de http://www.emtrion.de _____________________________________ Amtsgericht Mannheim HRB 110 300 Gesch=E4ftsf=FChrer: Dieter Baur, Ramona Maurer _____________________________________ Important Note: - This e-mail may contain trade secrets or privileged, undisclosed or=20 otherwise confidential information. - If you have received this e-mail in error, you are hereby notified that any review, copying or distribution of it is strictly prohibited. - Please inform us immediately and destroy the original transmittal. Thank you for your cooperation.