Athlon TBird to XP compatability?

fabs_uk · Posted: Mon Sep 13, 2004 6:17 pm Post subject: Athlon TBird to XP compatability?

Hey all, just a quick question for ya.
I've just upgraded from an athlon TBird 1.3GHz to an Athlon XP 2500+(mobile), but am getting some funky errors ("failed to calculate module dependencies" is the killer). I was wondering, this being a system bootstrapped to --march=athlon-tbird, are there (backwards)compatability issues here? (i.e. --march=athlon-tbird not working properly on an XP)

Thanks everyone!
Fabs

MrApples · Guru Joined: 13 Dec 2002 Posts: 511

yes, you will have some issues since it wasnt installed with the -march=athlon-xp flag
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fabs_uk · Posted: Mon Sep 13, 2004 9:58 pm Post subject:

ok, cheers. Looks like i gotta wait until i'm back on the uni net before i get it sorted. (dialup at home sucks compared to a full speed 10Mbit/s line)

Fabs

MrApples · Guru Joined: 13 Dec 2002 Posts: 511

yes, its the only downside to a new processor i suppose
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olima · n00b Joined: 11 Sep 2004 Posts: 7

Erm, may I ask which instructions the TBird supports that the XP doesn't? I mean, you can compile everything with -march=i386 and it would run on anything that supports at least the i386 instruction set. Similarly, you should be able to compile something with -march=athlon-tbird and run it on an XP. If you did it the other way round, compiling for the XP and running on the TBird, you would obviously get into troubles since the XP is newer and supports more instructions (SSE comes to my mind, maybe others). The way he did it, though, shouldn't be a problem at all, apart from maybe not utilising all capabilities of the new processor (but you normally wouldn't notice that). Very strange...

MrApples · Guru Joined: 13 Dec 2002 Posts: 511

the thing is that when a new processor comes out, it doesnt just allow for new instructions, but it handles previously used ones differently
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syadnom · Guru Joined: 09 May 2002 Posts: 531

justcompile your kernel, and remember to set the processor type to athlonxp, x(3,4,5,6)86. remember to make modules modules_install also.

fabs_uk · Posted: Tue Sep 14, 2004 5:05 pm Post subject:

ok, update for y'all.
Setting RC_PARALLEL_STARTUP=yes has allowed my modules to load, even though it still fails on calculating the dependencies (shame...

)
everything else *seems* to be perfectly functional, except i get LOTS of lines like:

ctford0 · Posted: Tue Sep 14, 2004 5:21 pm Post subject: