Date: Tue, 15 Oct 2002 18:11:57 -0700 From: Lars Eggert <larse@ISI.EDU> To: Juli Mallett <jmallett@FreeBSD.org> Cc: Jim Pirzyk <pirzyk@FreeBSD.org>, cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/conf options.i386 src/sys/i386/conf NOTES src/sys/i386/include atomic.h Message-ID: <3DACBCDD.3000903@isi.edu> References: <200210141933.g9EJXCCp079728@repoman.freebsd.org> <3DACBB41.9040709@isi.edu> <20021015180611.A15941@FreeBSD.org>
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[-- Attachment #1 --]
Juli Mallett wrote:
> * De: Lars Eggert <larse@ISI.EDU> [ Data: 2002-10-15 ]
> [ Subjecte: Re: cvs commit: src/sys/conf options.i386 src/sys/i386/conf NOTES src/sys/i386/include atomic.h ]
>
>>Jim Pirzyk wrote:
>>
>>>pirzyk 2002/10/14 12:33:12 PDT
>>>
>>> Modified files:
>>> sys/conf options.i386
>>> sys/i386/conf NOTES
>>> sys/i386/include atomic.h
>>> Log:
>>> Add a knob to turn on and off the CMPXCHG instruction on > i386 IA32 systems.
>>> This is most beneficial for vmware client os installs.
>>
>>Setting this option in an SMP kernel makes it die a horrible death
>>during boot.
>
>
> Yes. And?
Maybe a line could be added in NOTES stating that?
(I know booting an SMP kernel inside vmware doesn't make sense; we have
a custom setup that disables/enables kernel options per-machine from a
common template, and it took me a bit to figure out why the SMP version
suddenly crashed. We added CMPXCHG to the flags to turn off for SMP.)
Lars
--
Lars Eggert <larse@isi.edu> USC Information Sciences Institute
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