Messages in this thread | | | Date | Fri, 20 Oct 2006 19:11:34 -0700 (PDT) | Subject | Re: [PATCH 1/3] Fix COW D-cache aliasing on fork | From | David Miller <> |
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From: Linus Torvalds <torvalds@osdl.org> Date: Fri, 20 Oct 2006 17:38:32 -0700 (PDT)
> I think (but may be mistaken) that ARM _does_ have pure virtual caches > with a process ID, but people have always ended up flushing them at > context switch simply because it just causes too much trouble. > > Sparc? VIPT too? Davem?
sun4c is VIVT, but has no SMP variants. sun4m has both VIPT and PIPT.
> But it would be good to have something for the early -rc1 sequence for > 2.6.20, and maybe the MIPS COW D$ patches are it, if it has performance > advantages on MIPS that can also be translated to other virtual cache > users..
I think it could help for sun4m highmem configs. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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