android_kernel_xiaomi_sm8350/arch/i386/kernel/cpu/mcheck/winchip.c
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

38 lines
985 B
C

/*
* IDT Winchip specific Machine Check Exception Reporting
* (C) Copyright 2002 Alan Cox <alan@redhat.com>
*/
#include <linux/init.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <asm/processor.h>
#include <asm/system.h>
#include <asm/msr.h>
#include "mce.h"
/* Machine check handler for WinChip C6 */
static fastcall void winchip_machine_check(struct pt_regs * regs, long error_code)
{
printk(KERN_EMERG "CPU0: Machine Check Exception.\n");
add_taint(TAINT_MACHINE_CHECK);
}
/* Set up machine check reporting on the Winchip C6 series */
void __init winchip_mcheck_init(struct cpuinfo_x86 *c)
{
u32 lo, hi;
machine_check_vector = winchip_machine_check;
wmb();
rdmsr(MSR_IDT_FCR1, lo, hi);
lo|= (1<<2); /* Enable EIERRINT (int 18 MCE) */
lo&= ~(1<<4); /* Enable MCE */
wrmsr(MSR_IDT_FCR1, lo, hi);
set_in_cr4(X86_CR4_MCE);
printk(KERN_INFO "Winchip machine check reporting enabled on CPU#0.\n");
}