Messages in this thread |  | | | Date | Thu, 11 Sep 2003 16:58:26 +0200 | | From | Andi Kleen <> | | Subject | Re: [PATCH] 2.6 workaround for Athlon/Opteron prefetch errata |
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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 you're doing crazy LinuxBIOS stuff where flash size is limited, it > makes a lot of sense. (and I do such crazy things) The core 2.6 kernel > has really bloated with optional features, IMO.
If you really want to save text space just use .bz2 compression or compile the kernel with -Os. There are also other subsystems that would benefit much more (better effort/cost ratio) than adding micro #ifdefs to core code.
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