| // 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 |
| } |
