From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:42315) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1S490y-0001EE-3W for qemu-devel@nongnu.org; Sun, 04 Mar 2012 05:50:09 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1S490t-0005e4-EM for qemu-devel@nongnu.org; Sun, 04 Mar 2012 05:50:07 -0500 Received: from mx1.redhat.com ([209.132.183.28]:21498) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1S490t-0005cW-6b for qemu-devel@nongnu.org; Sun, 04 Mar 2012 05:50:03 -0500 Message-ID: <4F5348CE.8070909@redhat.com> Date: Sun, 04 Mar 2012 12:49:50 +0200 From: Avi Kivity MIME-Version: 1.0 References: <1330043012-30556-1-git-send-email-david@gibson.dropbear.id.au> <1330043012-30556-7-git-send-email-david@gibson.dropbear.id.au> <4F4CC96B.6040003@redhat.com> <1330465707.11728.29.camel@pasglop> In-Reply-To: <1330465707.11728.29.camel@pasglop> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH 6/6] kvm: Fix dirty tracking with large kernel page size List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Benjamin Herrenschmidt Cc: Marcelo Tosatti , qemu-devel@nongnu.org, anthony@codemonkey.ws, David Gibson On 02/28/2012 11:48 PM, Benjamin Herrenschmidt wrote: > On Tue, 2012-02-28 at 14:32 +0200, Avi Kivity wrote: > > > What if TARGET_PAGE_SIZE > getpagesize()? Or is that impossible? > > We have yet to encounter such a case. It's not currently possible on > power (some old embedded chips could do 1K and 2K page sizes in the TLB > iirc but we never supported that in Linux and it's being phased out in > HW). > > I suggest that gets dealt with when/if it needs to, which means probably > never :-) Doesn't ppc support both 4k and 64k pages? Suppose you run a 4k guest on a 64k host? Maybe I'm misremembering or misunderstanding something. -- error compiling committee.c: too many arguments to function