From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Mon, 6 Aug 2007 20:59:26 +0200 From: Andi Kleen Subject: Re: [PATCH 03/10] mm: tag reseve pages Message-ID: <20070806185926.GB22499@one.firstfloor.org> References: <20070806102922.907530000@chello.nl> <20070806103658.356795000@chello.nl> <1186426079.11797.88.camel@lappy> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1186426079.11797.88.camel@lappy> Sender: owner-linux-mm@kvack.org Return-Path: To: Peter Zijlstra Cc: Christoph Lameter , Andi Kleen , linux-kernel@vger.kernel.org, linux-mm@kvack.org, David Miller , Andrew Morton , Daniel Phillips , Pekka Enberg , Matt Mackall , Lee Schermerhorn , Steve Dickson List-ID: > precious page flag I always cringe when I hear that. It's really more than node/sparsemem use too many bits. If we get rid of 32bit NUMA that problem would be gone for the node at least because it could be moved into the mostly unused upper 32bit part on 64bit architectures. The alternative would be to investigate again what it does to the kernel to just use different lookup methods for this. -Andi -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org