Messages in this thread | | | Date | Tue, 31 Aug 2004 22:22:24 -0700 | From | "David S. Miller" <> | Subject | Re: page fault scalability patch final : i386 tested, x86_64 support added |
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On Wed, 01 Sep 2004 14:24:50 +1000 Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:
> The removal of the page table lock has other more subtle side effects > on ppc64 (and ppc32 too) that aren't trivial to solve. Typically, due > to the way we use the hash table as a TLB cache.
True on sparc64 as well where the page table lock is what synchronizes TLB context allocation for a process. While the lock is held, we know that the TLB context cannot change and this allows all kinds of TLB flush optimizations.
We also have the pseudo-invariant that flush_tlb_page() is always called with the page table lock held. - 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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