Messages in this thread | | | Date | Mon, 8 Sep 2008 11:17:39 -0700 (PDT) | From | Linus Torvalds <> | Subject | Re: [git pull] x86 fixes |
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On Mon, 8 Sep 2008, Linus Torvalds wrote: > > - X86_GENERIC means _other_ things too, like doing a 128-bit cacheline > just so that it won't suck horribly on P4's even if it's otherwise > tuned for a good microarchitecture.
Hmm. The only other thing seems to be X86_INTEL_USERCOPY. Which doesn't seem to be something we want to force either.
And I have to say, that whole X86_GENERIC -> L1_CACHE_BYTES=128 -> cache_line_size() -> SLAB/SLUB/SLOB alignment worries me too. Looking at that, I really don't feel like I want to force 128-byte alignment on everybody, just because the P4 was a pig in cacheline size.
So NOPL really stands out as being different from the other things that X86_GENERIC does.
Linus
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