linux-kernel - Re: apic doesn't work with 32bit kernel (fine with 64bit) [asus m2n-mx se+]

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Date:	Sun, 13 Apr 2008 14:59:21 +0200
From:	Christoph Pfister <christophpfister@...il.com>
To:	"Yinghai Lu" <yhlu.kernel@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: apic doesn't work with 32bit kernel (fine with 64bit) [asus m2n-mx se+]

Am Sonntag 13 April 2008 01:15:51 schrieb Yinghai Lu:
> On Sat, Apr 12, 2008 at 12:20 PM, Christoph Pfister
>
> <christophpfister@...il.com> wrote:
> > Hi,
> >
> >  Using a new motherboard, I came across a kernel panic (dmesg using
> > 2.6.25-rc9 [x86_32] transcribed from screenshot attached; also dmesg when
> >  using "apic=debug").
> >  The system works nearly fine when using "noapic" (setting rtc doesn't
> > work).
> >
> >  Everything (including apic and rtc) works like a charm when I use the
> > x86_64 version with (nearly) the same kernel config (dmesg attached as
> > well).
>
> how about booting 64 bit apic=debug?

Attached.

> wonder if using kexec to load 32bit kernel from 64 bit kernel help.

What should it help? Btw, grabbed a good old RS232 cable to get more than 25 
lines of dmesg :) - attached as well.

> YH

Christoph

View attachment "dmesg_good.txt" of type "text/plain" (25417 bytes)

View attachment "dmesg_bad.txt" of type "text/plain" (5571 bytes)