Re: [patch] i386: halt the CPU on serious errors

On Tue, 2006-06-20 at 00:55 -0400, Chuck Ebbert wrote:
> Halt the CPU when serious errors are encountered and we
> deliberately go into an infinite loop.
> 
> Suggested by Andreas Mohr.
> 
> Signed-off-by: Chuck Ebbert <[email protected]>
> 
> --- 2.6.17-32.orig/arch/i386/kernel/crash.c
> +++ 2.6.17-32/arch/i386/kernel/crash.c
> @@ -113,8 +113,8 @@ static int crash_nmi_callback(struct pt_
>  	disable_local_APIC();
>  	atomic_dec(&waiting_for_crash_ipi);
>  	/* Assume hlt works */
> -	halt();
> -	for(;;);
> +	for (;;)
> +		halt();

if halt is fall through (as you suggest).. this would want a cpu_relax()
as well..

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    • From: Chuck Ebbert <[email protected]>

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