Date: Tue, 15 Mar 2005 18:30:33 -0600 From: Jon Noack <noackjr@alumni.rice.edu> To: noackjr@alumni.rice.edu Cc: freebsd-i386@freebsd.org Subject: Re: CPUTYPE=pentium-m Message-ID: <42377E29.2080909@alumni.rice.edu> In-Reply-To: <42374EBD.6080501@alumni.rice.edu> References: <422ACE0B.4060503@lumachedelcervello.cjb.net> <422B502C.6090003@chillt.de> <20050312022324.GA4899@hub.freebsd.org> <423363C4.60508@chillt.de> <20050315020930.GA14246@dragon.NUXI.org> <42373A83.6040201@alumni.rice.edu> <20050315203959.GB41996@dragon.NUXI.org> <42374EBD.6080501@alumni.rice.edu>
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Jon Noack wrote: > David O'Brien wrote: >> On Tue, Mar 15, 2005 at 01:41:55PM -0600, Jon Noack wrote: >>> David O'Brien wrote: >>>> On Sat, Mar 12, 2005 at 10:48:52PM +0100, Bartosz Fabianowski wrote: >>>>>> Are you saying, all we need to do is commit this diff to make >>>>>> everyone's >>>>>> environment happy? >>>> >>>> Can you try with just -mno-sse2? I'd like to litter the compile >>>> command >>>> line as little as possible. >>> >>> I had this issue a while back with my Athlon-XP box >>> (http://lists.freebsd.org/pipermail/freebsd-current/2004-November/042127.html). >>> Note that I would get instant reboots with CPUTYPE?=athlon-xp, >>> CPUTYPE?=p3, and CPUTYPE?=p2. However, it worked fine with >>> CPUTYPE?=k6-2. I think you are right to be cautious and disable >>> anything that uses FP registers. >> >> I remember that problem but I don't know why I don't experience it, since >> I also use CPUTYPE=athlon-mp on my home desktop. I suspect the problem >> is SSE2 usage, which the Althon {X,M}P doesn't support. > > Huh. That didn't fix it for me. I manually merged the > sys/boot/i386/Makefile.inc and sys/boot/i386/boot2/Makefile changes, > added CPUTYPE?=athlon-xp, rebuilt world and kernel, and rebooted. Same > behavior. Oh crap -- I just noticed the sys/conf/kern.mk patch. > > Rebuilding kernel... Well, that didn't work either. I even rebuilt the loader with a hardcoded CPUTYPE=i686 for sys/boot/i386/Makefile.inc and sys/boot/i386/boot2/Makefile and it STILL rebooted instantly. Is it possible GCC compiled with CPUTYPE?=athlon-xp produces bad code? I guess my BIOS writer could've been on crack, but the machine is rock solid without CPUTYPE defined so I don't think it is a hardware problem. I'm willing to debug this but I need someone's hand to hold... Jon
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