Date: Tue, 15 Oct 2002 22:47:40 -0700 From: Lars Eggert <larse@ISI.EDU> To: Jim Pirzyk <jim@pirzyk.org> Cc: Julian Elischer <julian@elischer.org>, 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: <3DACFD7C.1000302@isi.edu> References: <Pine.BSF.4.21.0210151823350.81042-100000@InterJet.elischer.org> <200210152125.08142.jim@pirzyk.org>
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[-- Attachment #1 --]
Jim Pirzyk wrote:
> On Tuesday 15 October 2002 06:23 pm, Julian Elischer wrote:
>
>>How many SMP vmware's have you seen?
>>
>>On Tue, 15 Oct 2002, Lars Eggert wrote:
>>
>>>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.
>>
>
> Are you setting this on the host OS or the guest OS's kernel? This is only
> for the guest OS (ie running within vmware). Checking the VmWare
> web site, the make no mention of SMP Virtual Machines (they always
> talk about processor, not processors).
Guest. I often dual-boot a raw FreeBSD partition both natively on SMP
hardware and inside vmware, and was hoping to be able to use the same
kernel for both.
No biggie; I was just trying to suggest that if this option is soley for
use with vmware guest kernels, maybe add a sentence to NOTES along the
lines of "This option is only useful for vmware guest kernels, and may
break things when such a kernel is booted on real hardware."
Lars
--
Lars Eggert <larse@isi.edu> USC Information Sciences Institute
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