1 /* 2 * This program is free software; you can redistribute it and/or 3 * modify it under the terms of the GNU General Public License 4 * as published by the Free Software Foundation; either version 5 * 2 of the License, or (at your option) any later version. 6 */ 7 8 #include <linux/kernel.h> 9 #include <linux/printk.h> 10 #include <linux/ptrace.h> 11 12 #include <asm/reg.h> 13 14 int machine_check_8xx(struct pt_regs *regs) 15 { 16 unsigned long reason = regs->msr; 17 18 pr_err("Machine check in kernel mode.\n"); 19 pr_err("Caused by (from SRR1=%lx): ", reason); 20 if (reason & 0x40000000) 21 pr_cont("Fetch error at address %lx\n", regs->nip); 22 else 23 pr_cont("Data access error at address %lx\n", regs->dar); 24 25 #ifdef CONFIG_PCI 26 /* the qspan pci read routines can cause machine checks -- Cort 27 * 28 * yuck !!! that totally needs to go away ! There are better ways 29 * to deal with that than having a wart in the mcheck handler. 30 * -- BenH 31 */ 32 bad_page_fault(regs, regs->dar, SIGBUS); 33 return 1; 34 #else 35 return 0; 36 #endif 37 } 38