Linux-kernel mailing list archive 2000-15,: Re: SMP Lockups III -The Search for Stability

# Re: SMP Lockups III -The Search for Stability

Philippe Troin (phil@fifi.org)
14 Apr 2000 01:20:51 -0700

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"Stahl, David" <David_Stahl@NAI.com> writes:

> **
> Please CC me on replies to this I'm using a off-list email to try
> not to miss anything in the mail flood my normal box gets
> **
>
> I'm concerned that it's going to get left by the wayside in 2.2...so
> here's my own SMP problem book.
>
> I'm still having massive problems with SMP support on 2.2.10-2.2.15
> and all PRE's in between. Likely before then, but that's as far
> back as I can remember at the moment. Essentially, I've never had
> 2.2 OR 2.3 work in SMP mode w/o problems. However, the last 2.3
> version I tried was in January of 2000.

8<snip>8

> Gnu C 2.95.1

8<snip>8

Gcc 2.95.1 optimizes too much for the kernel. Do you compile your
kernel with 2.95.1 ? That could be the problem... Linus recommends gcc
2.7.2 or egcs 1.1.2, but gcc 2.95 is not supported for kernel
compilations.

2.95.2 is known to work.
2.95.1 with -fno-aliasing (AFAIR) is known to work.

Phil.

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