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Date: Thu, 17 Apr 2008 03:18:29 -0700 From: Andrew Morton <akpm@...ux-foundation.org> To: Andi Kleen <andi@...stfloor.org> Cc: Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org, Linus Torvalds <torvalds@...ux-foundation.org>, Thomas Gleixner <tglx@...utronix.de>, "H. Peter Anvin" <hpa@...or.com> Subject: Re: [v2.6.26] what's brewing in x86.git for v2.6.26 On Thu, 17 Apr 2008 12:11:36 +0200 Andi Kleen <andi@...stfloor.org> wrote: > Andrew Morton <akpm@...ux-foundation.org> writes: > > > > Does it really really really need to consume one of our few remaining page > > flags? We'll be in a mess when we run out. > > No we're not. Just the (imho always misguided) "encode zone/node number > into flags" optimization has to be removed again or made 64bit only. > Then there will be plenty of flags again. hm. Or we add a new nid&zone field to the pageframe for 32bit NUMA. Just don't tell Paul Mundt ;) Need to work out what's going on with ia64's use of the upper 32 bits too. I have a feeling it's using less than it used too but at 3AM I can't be assed working it out. > Really I see no real reason this can't be done with a small hash table > again like x86-64 originally did. How did that work? A pfn->zone-id hash table would be huge? -- 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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