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On Tue, Dec 14, 2004 at 11:14:46PM -0800, Martin J. Bligh wrote: > Well hold on a sec. We don't need to use the hugepages pool for this, > do we? This is the same as using huge page mappings for the whole of > kernel space on ia32. As long as it's a kernel mapping, and 16MB aligned > and contig, we get it for free, surely? The whole point of the patch is to not use the direct mapping, but use a different interleaved mapping on NUMA machines to spread the memory out over multiple nodes. > > Using other page sizes would be probably tricky because the > > linux VM can currently barely deal with two page sizes. > > I suspect handling more would need some VM infrastructure effort > > at least in the changed port. > > For the general case I'd agree. But this is a setup-time only tweak > of the static kernel mapping, isn't it? It's probably not impossible, just lots of ugly special cases. e.g. how about supporting it for /proc/kcore etc? -Andi - 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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