From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <3D99AEA7.1000005@ellemedia.com> Date: Tue, 01 Oct 2002 17:18:15 +0300 From: Apostolos Meliones MIME-Version: 1.0 To: linuxppc-embedded@lists.linuxppc.org Subject: Segmentation fault and HiP3 vs HiP4 (8260 vs 8264) Content-Type: text/plain; charset=us-ascii; format=flowed Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: Dear colleagues, At last, we solved the segmentation fault problem that we encountered when trying to port kernel 2.4.7 on a HiP4 MPC8260 customized board thanks to the kind assistance of a friend from the list! We moved to a new kernel (we were using 2.4.7) to support the PVR of the HiP4 versions of MPC826x, so we tested 2.4.12, 2.4.18 and 2.4.20. We did our porting mostly on 2.4.20. We had almost everything there. However, we encountered a serious error related to memory management regarding one of our drivers that was based on a port from MPC860 coded for kernel 2.4.4. Alternatively, we kept on working in parallel on 2.4.7 to find out and cancel the PVR checks that were instructing the kernel to use an incorrect cpu among the several available processor versions. This was responsible for the segmentation fault. We deceived the kernel to take 8264 for 8260 and this way the problem was solved !! Best regards Apostol ---------------------------------------- Dr. Apostol Meliones Ellemedia Technologies 223 Syngrou Ave., 17121, Athens, Greece Tel: +30-10-9373095, Fax: +30-10-9370386 ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/