[PATCH 0/3] x86: unify crash_32/64.c

Hiroshi Shimamoto h-shimamoto at ct.jp.nec.com
Fri Oct 26 17:43:08 EDT 2007

> I'm now testing crash on 32bit, but there is an issue before
> applying the patches. My machine stopped at checking 'hlt'
> after kexec, showing below message.
> CPU: Intel(R) Xeon(TM) CPU 3.80GHz stepping 0a
> Checking 'hlt' instruction...
> v2.6.23.1 works fine for 1st kernel.
> I'm investigating it..

I found that the following patch makes my machine stopped.
x86: HPET force enable for ICH5

It means that after applied this patch, HPET is enabled
automatically on 1st kernel and after crash/kexec the 2nd
kernel stopped at checking 'hlt'.

I also tested the latest kernel(2.6.24-rc1-gec3b67c1).
Boot parameter "nohpet" resolves this issue and kdump
works well on 32bit.
So I guess HPET affects this.
But I don't know why 64bit kernel with HPET is OK.

Hiroshi Shimamoto

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