Re: Cannot boot the 7-current's GENERIC kernel on some old PCs (Pentium/P54C, DX4ODP)

From: Alexander Leidinger <Alexander_at_Leidinger.net>
Date: Mon, 6 Feb 2006 21:36:42 +0100
Am Mon, 06 Feb 2006 21:55:21 +0900
schrieb Watanabe Kazuhiro <CQG00620_at_nifty.ne.jp>:

> Hi, all.
> 
> I have some old PCs which CPU is Intel Pentium/P54C and DX4ODP.
> They cannot boot the recent 7-current's GENERIC kernel.
> 
>  * NEC PC-9821Xa9	(CPU: Pentium/P54C, Memory: 64MB, pc98)
>  * NEC PC-9821As2	(CPU: DX4ODP, Memory: 42MB, pc98)
>  * Fujitsu FMV-575D4	(CPU: Pentium/P54C, Memory: 128MB, i386)
> 
> They can boot 6.0-RELEASE, but cannot boot 7-current (CVSup'ed with
> date=2006.01.26.00.00.00).
[...]
> But when I add a "options PQ_NOOPT" configulation option to the
> GENERIC kernel configulation file and recompile it, this kernel is
> able to boot on these PCs.

> I think this is caused by the CPU cache detection functions in
> sys/i386/i386/identcpu.c (but I have no idea to solve the problem).
> These ware comitted at the end of December 2005.  From src/UPDATING:

This is strange, since it is supposed to fall back to default values if
it can't detect a cache size. And the cache size detection is protected
like every other use of the CPU features detection code.

Bye,
Alexander.

-- 
http://www.Leidinger.net                       Alexander _at_ Leidinger.net
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Received on Mon Feb 06 2006 - 19:37:15 UTC

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