Messages in this thread | | | From | Jesse Barnes <> | Subject | Re: MTRR initialization | Date | Thu, 20 Sep 2007 10:08:53 -0700 |
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On Thursday, September 20, 2007, Jesse Barnes wrote: > On Wednesday, September 19, 2007 11:50:23 pm Andi Kleen wrote: > > Jesse Barnes <jesse.barnes@intel.com> writes: > > > To do this in a nicer way (and be less vulnerable to similar BIOS > > > funkiness) the kernel really needs full PAT support. That should > > > allow WC over WB and WC over UC mappings to occur, at least if > > > I'm remembering the docs right... > > > > PAT only really helps for device driver performance optimizations. > > But if the basic WB MTRRs are wrong PAT cannot really salvage it. > > Look at the original bug report. There's a bug WB region so any ^^^ err big - 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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