From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Thu, 9 Nov 00 15:48 EST From: fraher To: linuxppc-embedded@lists.linuxppc.org Subject: MVME2604 Problems with MMU Content-Type: text/plain Message-ID: <3a0b0db70.46b4@clbdev2.eh.pweh.com> Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: I've got a 2.2.12 kernel with Gabriel's patches (NFS mounted root), and it works beautifully on a MVME2603 board (many thanks, Gabriel). However, when I swap out the MVME2603 with a MVME2604, and cause some SCSI disk activity, the system crashes with end_scsi_request: buffer-list destroyed page fault in interrupt handler, addr=8000000 NIP: 08000000 XER: 20000000 LR: C00C67BC REGS: c00ffc48 TRAP: 0400 MSR: 40001032 EE: 0 PR: 0 FP: 0 ME: 1 IR/DR: 11 TASK = c00fdfe8[0] 'swapper' mm->pgd c00fc000 Last syscall: 112 ... kernel panic: kernel access of bad area pc 8000000 lr c00c67bc address 8000000 tsk swapper/0 The 'page fault' makes me wonder if the 604's TLB miss response differs sufficiently to cause the kernel panic. Has anyone else seen problems running on 2.2.12 with an MVME2604? Are there other patches needed to compensate for the MMU differences with the 604e? Bill Fraher fraher@pratt-whitney.com ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/