Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752195Ab2FSCHe (ORCPT ); Mon, 18 Jun 2012 22:07:34 -0400 Received: from mail-pz0-f46.google.com ([209.85.210.46]:49458 "EHLO mail-pz0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750821Ab2FSCHd (ORCPT ); Mon, 18 Jun 2012 22:07:33 -0400 Date: Tue, 19 Jun 2012 11:07:28 +0900 From: Takuya Yoshikawa To: Marcelo Tosatti Cc: Takuya Yoshikawa , Xiao Guangrong , Avi Kivity , LKML , KVM Subject: Re: [PATCH v6 6/9] KVM: MMU: fast path of handling guest page fault Message-Id: <20120619110728.14504b91ec1c2ee9cd81b413@gmail.com> In-Reply-To: <20120618192120.GA2697@amt.cnet> References: <4FC470C7.5040700@linux.vnet.ibm.com> <4FC471B8.3070204@linux.vnet.ibm.com> <20120613224002.GE19290@amt.cnet> <20120614102214.1c8a6e23.yoshikawa.takuya@oss.ntt.co.jp> <20120618192120.GA2697@amt.cnet> X-Mailer: Sylpheed 3.2.0beta3 (GTK+ 2.24.6; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 710 Lines: 24 On Mon, 18 Jun 2012 16:21:20 -0300 Marcelo Tosatti wrote: > > [not about this patch] > > > > EPT accessed/dirty bits will be used for more things in the future. > > Are there any rules for using these bits? > > > > Same as other bits? > > Do you mean hardware rules or KVM rules? KVM rules. Your concern was about "lock-less" v. "current EPT-A/D code". My question was what we should care not to break the former in the future. Takuya -- 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/