2 * IDT Winchip specific Machine Check Exception Reporting
3 * (C) Copyright 2002 Alan Cox <alan@lxorguk.ukuu.org.uk>
5 #include <linux/interrupt.h>
6 #include <linux/kernel.h>
7 #include <linux/types.h>
8 #include <linux/init.h>
10 #include <asm/processor.h>
14 /* Machine check handler for WinChip C6: */
15 static void winchip_machine_check(struct pt_regs
*regs
, long error_code
)
17 printk(KERN_EMERG
"CPU0: Machine Check Exception.\n");
18 add_taint(TAINT_MACHINE_CHECK
);
21 /* Set up machine check reporting on the Winchip C6 series */
22 void winchip_mcheck_init(struct cpuinfo_x86
*c
)
26 machine_check_vector
= winchip_machine_check
;
27 /* Make sure the vector pointer is visible before we enable MCEs: */
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
);
35 set_in_cr4(X86_CR4_MCE
);
38 "Winchip machine check reporting enabled on CPU#0.\n");