2 * IDT Winchip specific Machine Check Exception Reporting
3 * (C) Copyright 2002 Alan Cox <alan@redhat.com>
6 #include <linux/init.h>
7 #include <linux/types.h>
8 #include <linux/kernel.h>
9 #include <linux/interrupt.h>
11 #include <asm/processor.h>
12 #include <asm/system.h>
17 /* Machine check handler for WinChip C6 */
18 static void winchip_machine_check(struct pt_regs * regs, long error_code)
20 printk(KERN_EMERG "CPU0: Machine Check Exception.\n");
21 add_taint(TAINT_MACHINE_CHECK);
24 /* Set up machine check reporting on the Winchip C6 series */
25 void winchip_mcheck_init(struct cpuinfo_x86 *c)
28 machine_check_vector = winchip_machine_check;
30 rdmsr(MSR_IDT_FCR1, lo, hi);
31 lo|= (1<<2); /* Enable EIERRINT (int 18 MCE) */
32 lo&= ~(1<<4); /* Enable MCE */
33 wrmsr(MSR_IDT_FCR1, lo, hi);
34 set_in_cr4(X86_CR4_MCE);
35 printk(KERN_INFO "Winchip machine check reporting enabled on CPU#0.\n");