5a72e04df5
Using CPU hotplug to support suspend/resume SMP. Both S3 and S4 use disable/enable_nonboot_cpus API. The S4 part is based on Pavel's original S4 SMP patch. Signed-off-by: Li Shaohua<shaohua.li@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
38 lines
988 B
C
38 lines
988 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/irq.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 fastcall 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 __devinit 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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