From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marcelo Tosatti Subject: Re: [PATCH] emulate accessed bit for EPT Date: Sun, 7 Feb 2010 17:21:01 -0200 Message-ID: <20100207192101.GB3387@amt.cnet> References: <20100203161103.11e2b572@annuminas.surriel.com> <20100204041212.GI19641@balbir.in.ibm.com> <4B6ACE5B.9080601@redhat.com> <20100204174715.GL5959@random.random> <20100205173422.GA14706@amt.cnet> <20100205181413.GV5959@random.random> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Rik van Riel , balbir@linux.vnet.ibm.com, jdike@addtoit.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, avi@redhat.com To: Andrea Arcangeli Return-path: Content-Disposition: inline In-Reply-To: <20100205181413.GV5959@random.random> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org On Fri, Feb 05, 2010 at 07:14:13PM +0100, Andrea Arcangeli wrote: > On Fri, Feb 05, 2010 at 03:34:23PM -0200, Marcelo Tosatti wrote: > > But perhaps a module parameter to turn accessed bit emulation off might > > be handy in the future? > > Maybe, but somebody should show that this can overall become a > downside, which I doubt... I think if it does, the VM is to blame for > calling page_referenced when there is no point to do so just yet. Agreed. ACK.