Messages in this thread |  | | Date | 24 Dec 2000 11:36:00 +0200 | From | (Kai Henningsen) | Subject | Re: About Celeron processor memory barrier problem |
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torvalds@transmeta.com (Linus Torvalds) wrote on 23.12.00 in <Pine.LNX.4.10.10012230920330.2066-100000@penguin.transmeta.com>:
> On Thu, 23 Dec 1999, michael chen wrote: > > I found that when I compiled the 2.4 kernel with the option > > of Pentium III or Pentium 4 on a Celeron's PC, it could cause the > > system hang at very beginning boot stage, and I found the problem > > is cause by the fact that Intel Celeron doesn't have a real memory > > barrier,but when you choose the Pentium III option, the kernel > > assume the processor has a real memory barrier. > > Here is a patch to fix it: > > No. > > The fix is to not lie to the configurator. > > A Celeron isn't a PIII, and you shouldn't tell the configure that it is. > > The whole point of being able to choose the CPU to optimize for is that we > can optimize things at compile-time.
Which is all fine, but maybe the kernel really ought to detect that problem and complain at boot time?
Or does that happen already?
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