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Date:      Wed, 25 Sep 2002 13:48:09 -0700
From:      Gordon Tetlow <gordont@gnf.org>
To:        stable@freebsd.org
Subject:   Re: Panic on 4.6.1-RELEASE-p10 with a Crusoe processors
Message-ID:  <20020925204809.GR41477@roark.gnf.org>
In-Reply-To: <20020920220916.GA41477@roark.gnf.org>
References:  <20020920220916.GA41477@roark.gnf.org>

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On Fri, Sep 20, 2002 at 03:09:16PM -0700, Gordon Tetlow wrote:
> I have a *very* reproducable panic from my RLX Transmeta Blade when I try
> to do a sysctl -a. It hits hw.crusoe.longrun and crashes the box. Since t=
his
> is in production I didn't get a core dump (I don't have a debug kernel ar=
ound
> since this is on a production server). Here's the info from the console:
>=20
> stack pointer           =3D 0x10:0xc874cdfc
> frame pointer           =3D 0x10:0xc874ce0c
> code segment            =3D base 0x0, limit 0xfffff, type 0x1b
>                         =3D DPL 0, pres 1, def32 1, gran 1
> processor eflags        =3D resume, IOPL =3D 0
> current process         =3D 174 (sysctl)
> interrupt mask          =3D none
> trap number             =3D 9
> panic: general protection fault
>=20
> I don't know if that helps, but there it is.
>=20
> If you want to look at the code that pertains,
> src/sys/i386/i386/identcpu.c:1138

The problem turns out to be the fact that this CPU doesn't have longrun on
it. I think there is a CPU flag that indicates longrun capability or not.
I'm not sure what it is, or what it looks like, but I can provide some code
(from a Linux package) that does the detection.

-gordon

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