mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-04 18:46:43 +07:00
4de816297d
Before:
total: 4 errors, 0 warnings, 36 lines checked
After:
total: 0 errors, 0 warnings, 36 lines checked
No code changed:
arch/x86/kernel/cpu/mcheck/winchip.o:
text data bss dec hex filename
222 0 4 226 e2 winchip.o.before
222 0 4 226 e2 winchip.o.after
md5:
9caefa12256c5f7d71ef324f6d01a2d5 winchip.o.before.asm
9caefa12256c5f7d71ef324f6d01a2d5 winchip.o.after.asm
Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
37 lines
946 B
C
37 lines
946 B
C
/*
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* IDT Winchip specific Machine Check Exception Reporting
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* (C) Copyright 2002 Alan Cox <alan@redhat.com>
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*/
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/interrupt.h>
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#include <asm/processor.h>
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#include <asm/system.h>
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#include <asm/msr.h>
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#include "mce.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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printk(KERN_EMERG "CPU0: Machine Check Exception.\n");
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add_taint(TAINT_MACHINE_CHECK);
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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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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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set_in_cr4(X86_CR4_MCE);
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printk(KERN_INFO "Winchip machine check reporting enabled on CPU#0.\n");
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}
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