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Date: Thu, 3 Jan 2008 18:26:56 +0100 (CET) From: Andi Kleen <ak@...e.de> To: linux-kernel@...r.kernel.org Subject: [PATCH] [0/8] GB pages (PDP1GB) support for the kernel direct mapping This patchkit implement GB pages support for AMD Fam10h CPUs. This patchkit only implements it for the kernel direct mapping for now; support for hugetlbfs is upcomming. This allows to map the kernel direct mapping using 1GB TLBs instead of 2MB TLBs and get hopefully less TLB misses for the kernel. The GB pages are only implemented for 64bit (because the CPU only implements them for long mode) and also only for data pages (because Fam10h doesn't have GB ITLBs and AMD recommends against running code in them) There is an option to turn them off (direct_gbpages=off), although I hope that won't be needed. Also includes one generic bug fix for clear_page_kernel. -Andi -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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