Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754912AbYFJTyz (ORCPT ); Tue, 10 Jun 2008 15:54:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751995AbYFJTyr (ORCPT ); Tue, 10 Jun 2008 15:54:47 -0400 Received: from mga11.intel.com ([192.55.52.93]:31132 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751257AbYFJTyq convert rfc822-to-8bit (ORCPT ); Tue, 10 Jun 2008 15:54:46 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.27,619,1204531200"; d="scan'208";a="575066639" X-MimeOLE: Produced By Microsoft Exchange V6.5 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Subject: RE: [patch 01/41] cpu_alloc: Increase percpu area size to 128k Date: Tue, 10 Jun 2008 12:54:44 -0700 Message-ID: <1FE6DD409037234FAB833C420AA843EC0188382F@orsmsx424.amr.corp.intel.com> In-Reply-To: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [patch 01/41] cpu_alloc: Increase percpu area size to 128k Thread-Index: AcjLHphoswqPvrksQhW0IWVU85RHgQAFKNDg References: <20080530035620.587204923@sgi.com> <20080530040010.806208523@sgi.com> <1FE6DD409037234FAB833C420AA843EC0177822B@orsmsx424.amr.corp.intel.com> From: "Luck, Tony" To: "Christoph Lameter" Cc: , , , "David Miller" , "Eric Dumazet" , "Peter Zijlstra" , "Rusty Russell" , "Mike Travis" X-OriginalArrivalTime: 10 Jun 2008 19:54:45.0652 (UTC) FILETIME=[D4F2ED40:01C8CB33] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 734 Lines: 19 > > > -#define PERCPU_PAGE_SHIFT 16 /* log2() of max. size of per-CPU area */ > > > +#define PERCPU_PAGE_SHIFT 17 /* log2() of max. size of per-CPU area */ > > > > Don't you need some more changes to the alt_dtlb_miss handler in > > ivt.S for this to work? 128K is not a supported pagesize on any > > processor model. > > Ok so this needs to be 18? Yes. 18 will work (256K is an architected page size, guaranteed to be supported by all processor models ... SDM 2:52 table 4-4). -Tony -- 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/