Messages in this thread |  | | | Date | Fri, 16 Mar 2007 13:55:45 -0700 (PDT) | | Subject | Re: [PATCH 00/18] Make common x86 arch area for i386 and x86_64 - Take 2 | | From | David Miller <> |
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From: Christoph Lameter <clameter@sgi.com> Date: Fri, 16 Mar 2007 13:52:18 -0700 (PDT)
> Virtual mmap allows holes in the same way as page tables do.
I don't want to take expensive TLB misses to lookup a page.
Don't force a virtual mapping solution down my throat if that is not what I believe as a platform maintainer works best for me.
TLB misses are extremely expensive on some platforms, that's why I try to make all the critical structures go through the 4MB locked TLB entry for the kernel image, or failing that the 4MB linear mappings at PAGE_OFFSET on sparc64. - 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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