Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755361AbYFPOwX (ORCPT ); Mon, 16 Jun 2008 10:52:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752573AbYFPOwO (ORCPT ); Mon, 16 Jun 2008 10:52:14 -0400 Received: from netops-testserver-3-out.sgi.com ([192.48.171.28]:60826 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752257AbYFPOwN (ORCPT ); Mon, 16 Jun 2008 10:52:13 -0400 Date: Mon, 16 Jun 2008 07:52:08 -0700 (PDT) From: Christoph Lameter X-X-Sender: clameter@schroedinger.engr.sgi.com To: Rusty Russell cc: Nick Piggin , Martin Peschke , Andrew Morton , linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, David Miller , Eric Dumazet , Peter Zijlstra , Mike Travis Subject: Re: [patch 04/41] cpu ops: Core piece for generic atomic per cpu operations In-Reply-To: <200806152033.02891.rusty@rustcorp.com.au> Message-ID: References: <20080530035620.587204923@sgi.com> <200806131038.12987.rusty@rustcorp.com.au> <200806152033.02891.rusty@rustcorp.com.au> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 804 Lines: 19 On Sun, 15 Jun 2008, Rusty Russell wrote: > > 3. Some hooks for arches to override particular behavior as needed. > > F.e. IA64 allocates percpu structures in a special way. x86_64 > > needs to do some tricks for the pda etc etc. > > IA64 is going to need some work, since dynamic percpu addresses won't be able > to use their pinned TLB trick to get the local version. The ia64 hook could simply return the address of percpu area that was reserved when the per node memory layout was generated (which happens very early during node bootstrap). -- 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/