Messages in this thread | ![/](/images/icornerl.gif) | | Date | Thu, 11 Sep 2003 11:06:14 -0400 | From | Jeff Garzik <> | Subject | Re: [PATCH] 2.6 workaround for Athlon/Opteron prefetch errata |
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Andi Kleen wrote: > On Thu, 11 Sep 2003 10:34:36 -0400 > Jeff Garzik <jgarzik@pobox.com> wrote: > > >>>X86_GENERIC is merely an optimization hint (currently it only changes the cache >>>line size hint) It does not change anything related to correctness. Everything >>>that handles correctness is checked unconditionally. >> >>When, building non-Pentium4-related code when CONFIG_MPENTIUM4 && >>!CONFIG_X86_GENERIC, it's OK that the code is incorrect for (picking >>example) AMD processors. > > > No 2.6 changed that. On 2.6 you can exchange the kernels. > > [that was mainly done for distributions, but helps other users too]
If distributions are not building with CONFIG_X86_GENERIC, then they're broken. So it was rather pointless for 2.6 to "change that."
Luckily, CONFIG_X86_GENERIC allows us the opportunity to be _less_ generic when it's not defined, regardless of what you originally intended ;-)
Jeff
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