Re: About Celeron processor memory barrier problem

Linus Torvalds
2000-12-23T17:53:03Z

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.

Linus