// SPDX-License-Identifier: GPL-2.0-or-later /* */ #include <linux/kernel.h> #include <linux/printk.h> #include <linux/ptrace.h> #include <asm/reg.h> int machine_check_8xx(struct pt_regs *regs) { unsigned long reason = regs->msr; pr_err("Machine check in kernel mode.\n"); pr_err("Caused by (from SRR1=%lx): ", reason); if (reason & 0x40000000) pr_cont("Fetch error at address %lx\n", regs->nip); else pr_cont("Data access error at address %lx\n", regs->dar); #ifdef CONFIG_PCI /* the qspan pci read routines can cause machine checks -- Cort * * yuck !!! that totally needs to go away ! There are better ways * to deal with that than having a wart in the mcheck handler. * -- BenH */ bad_page_fault(regs, SIGBUS); return 1; #else return 0; #endif }