forked from Minki/linux
1b74dde7c4
- Use the more current logging style pr_<level>(...) instead of the old printk(KERN_<LEVEL> ...). - Convert pr_warning() to pr_warn(). Signed-off-by: Chen Yucong <slaoub@gmail.com> Cc: Borislav Petkov <bp@alien8.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1454384702-21707-1-git-send-email-slaoub@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
/*
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* IDT Winchip specific Machine Check Exception Reporting
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* (C) Copyright 2002 Alan Cox <alan@lxorguk.ukuu.org.uk>
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*/
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#include <linux/interrupt.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <asm/processor.h>
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#include <asm/traps.h>
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#include <asm/tlbflush.h>
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#include <asm/mce.h>
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#include <asm/msr.h>
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/* Machine check handler for WinChip C6: */
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static void winchip_machine_check(struct pt_regs *regs, long error_code)
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{
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ist_enter(regs);
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pr_emerg("CPU0: Machine Check Exception.\n");
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add_taint(TAINT_MACHINE_CHECK, LOCKDEP_NOW_UNRELIABLE);
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ist_exit(regs);
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}
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/* Set up machine check reporting on the Winchip C6 series */
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void winchip_mcheck_init(struct cpuinfo_x86 *c)
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{
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u32 lo, hi;
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machine_check_vector = winchip_machine_check;
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/* Make sure the vector pointer is visible before we enable MCEs: */
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wmb();
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rdmsr(MSR_IDT_FCR1, lo, hi);
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lo |= (1<<2); /* Enable EIERRINT (int 18 MCE) */
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lo &= ~(1<<4); /* Enable MCE */
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wrmsr(MSR_IDT_FCR1, lo, hi);
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cr4_set_bits(X86_CR4_MCE);
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pr_info("Winchip machine check reporting enabled on CPU#0.\n");
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}
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