From mboxrd@z Thu Jan 1 00:00:00 1970 From: Benjamin Herrenschmidt Date: Tue, 17 Aug 2004 08:01:39 +0000 Subject: Re: page fault fastpath: Increasing SMP scalability by introducing Message-Id: <1092729699.9539.131.camel@gaston> List-Id: References: <1092609485.9538.27.camel@gaston> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Christoph Lameter Cc: linux-ia64@vger.kernel.org, Linux Kernel list , Anton Blanchard > Is this the _PAGE_BUSY bit? The pte update routines on PPC64 seem to spin > on that bit when it is set waiting for the hash value update to complete. > Looks very specific to the PPC64 architecture. Yes, it is, I was thinking it's use could be extended tho Ben. From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S268166AbUHQIMF (ORCPT ); Tue, 17 Aug 2004 04:12:05 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S268157AbUHQIKu (ORCPT ); Tue, 17 Aug 2004 04:10:50 -0400 Received: from gate.crashing.org ([63.228.1.57]:7073 "EHLO gate.crashing.org") by vger.kernel.org with ESMTP id S268146AbUHQIKQ (ORCPT ); Tue, 17 Aug 2004 04:10:16 -0400 Subject: Re: page fault fastpath: Increasing SMP scalability by introducing pte locks? From: Benjamin Herrenschmidt To: Christoph Lameter Cc: linux-ia64@vger.kernel.org, Linux Kernel list , Anton Blanchard In-Reply-To: References: <1092609485.9538.27.camel@gaston> Content-Type: text/plain Message-Id: <1092729699.9539.131.camel@gaston> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Tue, 17 Aug 2004 18:01:39 +1000 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > Is this the _PAGE_BUSY bit? The pte update routines on PPC64 seem to spin > on that bit when it is set waiting for the hash value update to complete. > Looks very specific to the PPC64 architecture. Yes, it is, I was thinking it's use could be extended tho Ben.