RE: [PATCH]send slave cpus to SAL slave loop on crash (IA64)

From: Zou, Nanhai <nanhai.zou_at_intel.com>
Date: 2006-11-08 13:01:04
> -----Original Message-----
> From: Jay Lan [mailto:jlan@sgi.com]
> Sent: 2006114 1:42
> To: Zou, Nanhai
> Cc: fastboot; Linux-IA64; Jack Steiner; Luck, Tony
> Subject: Re: [PATCH]send slave cpus to SAL slave loop on crash (IA64)
> 
> Zou, Nanhai wrote:
> >   --noio patch should be the same to my original sugguestion..., it bypass
> all PIO and MMIO in purgatory with --noio option. I need to have a check though.
> 
> Hi Nanhai,
> 
> I finally got a chance to look at this further.
> 
> Your patch touched four files:
>     kexec/arch/ia64/kexec-elf-ia64.c
>     purgatory/arch/ia64/entry.S
>     purgatory/arch/ia64/include/arch/io.h
>     purgatory/arch/ia64/io.h
> 
> I replaced both of the io.h with my version and it still
> failed. So, it should be the way --noio option being handled
> that made the difference.
> 
> I did have debug messages showing that "noio" option was
> processed in elf_rel_set_symbol() in my testing. Does
> kernel code need to know about this option? Somehow
> this change makes kernel fail in init().
> 
  No, kernel does not need to know this. Kexec-tools pass this option to purgatory code by relocating at kexec load time.

 Zou Nan hai
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Received on Wed Nov 08 13:01:55 2006

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