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Date:      Wed, 09 Oct 2002 19:53:54 +0200
From:      Poul-Henning Kamp <phk@critter.freebsd.dk>
To:        ticso@cicely.de
Cc:        cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject:   Re: cvs commit: src/sys/boot/common ufsread.c 
Message-ID:  <11046.1034186034@critter.freebsd.dk>
In-Reply-To: Your message of "Wed, 09 Oct 2002 19:44:58 %2B0200." <20021009174457.GP17920@cicely8.cicely.de> 

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In message <20021009174457.GP17920@cicely8.cicely.de>, Bernd Walter writes:
>On Tue, Oct 08, 2002 at 08:46:45AM -0700, Poul-Henning Kamp wrote:
>> phk         2002/10/08 08:46:45 PDT
>> 
>>   Modified files:
>>     sys/boot/common      ufsread.c 
>>   Log:
>>   It seems that the only problem with UFS2 booting on i386 is the 64bit
>>   divide/remainder calls.  For reasons not resolved, compiling the
>>   relevant routines from libkern into boot2 results in stack corruption.
>>   
>>   Do the simple thing: Don't use 64bit divide/remainder operations.
>>   
>>   Sponsored by:   DARPA & NAI Labs
>
>Are there any known show stoppers to try booting an UFS2 partition
>on alpha?

Not that I know of.  I don't know how the bootcode arrangement is
on alpha, much less what size the UFS2 code results in.  I pressume
you could give your 'a' partition a start of something like 64k if
it larger than the default space, whatever that is.

I'm very interested in people with access to hardware to work on
this...


-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.

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