From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Blake Subject: Re: [Qemu-devel] [RFC Design Doc]Speed up live migration by skipping free pages Date: Wed, 23 Mar 2016 10:53:42 -0600 Message-ID: <56F2CA16.5030900@redhat.com> References: <1458632629-4649-1-git-send-email-liang.z.li@intel.com> <20160323013715.GB13750@linux-gk3p> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="XrNx3GQE71qXbTe464emG4eAnVGv7OTbV" Cc: "rkagan@virtuozzo.com" , "linux-kernel@vger.kenel.org" , "ehabkost@redhat.com" , "kvm@vger.kernel.org" , "mst@redhat.com" , "simhan@hpe.com" , "quintela@redhat.com" , "qemu-devel@nongnu.org" , "dgilbert@redhat.com" , "jitendra.kolhe@hpe.com" , "mohan_parthasarathy@hpe.com" , "amit.shah@redhat.com" , "pbonzini@redhat.com" , "rth@twiddle.net" To: "Li, Liang Z" , Wei Yang Return-path: Received: from mx1.redhat.com ([209.132.183.28]:56315 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754217AbcCWQxr (ORCPT ); Wed, 23 Mar 2016 12:53:47 -0400 In-Reply-To: Sender: kvm-owner@vger.kernel.org List-ID: This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --XrNx3GQE71qXbTe464emG4eAnVGv7OTbV Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 03/23/2016 01:18 AM, Li, Liang Z wrote: >>> >>> >From guest's point of view, there are some pages currently not used = by >> >> I see in your original RFC patch and your RFC doc, this line starts wi= th a >> character '>'. Not sure this one has a special purpose? >> >=20 > No special purpose. Maybe it's caused by the email client. I didn't fin= d the > character in the original doc. >=20 Yes, it's an artifact used by many mailers so that mailboxes don't get confused by a bare "From" at the start of a line but in the middle rather than the start of a message. It's possible to avoid the artifact by using quoted-printable and escaping the 'F', and I'm honestly a bit surprised that git doesn't do it automatically. --=20 Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org --XrNx3GQE71qXbTe464emG4eAnVGv7OTbV Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 Comment: Public key at http://people.redhat.com/eblake/eblake.gpg Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBCAAGBQJW8soWAAoJEKeha0olJ0NqDSMH/3erDELDpovzc5kEdQXDy0v3 U5SYa18FSHBXmft47NrWYlxnn8aBWIjB1XcUMwzYKLj5krlT03+08yS2/vkBEg1J Gg70oGX5lqUm5P6eTuIPspUy7RAkJZhJm5JOB9FZo6F30d7G4KAmn/I4O+pfUu6s HKH49iEzmbQgRr8pfA/tdNdx3wrF6NOLAqaf5H2cvrS8BVttQZOgHaY7/Hr2Bcrn T29QdfuET16DyQw+6h8zQPuJUvqJerW4eFiN3+9IFgRZUs3SqgBOKBKkNBV4PesC gZS8W7O1XnoFDMxaBg2Lwq5EXO37OYoKJtUsK+6lHTov4RW4xEkYYHgznQG9i+U= =xit1 -----END PGP SIGNATURE----- --XrNx3GQE71qXbTe464emG4eAnVGv7OTbV-- From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:37767) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aim2W-0006lK-Jo for qemu-devel@nongnu.org; Wed, 23 Mar 2016 12:53:49 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aim2V-0008Gj-MJ for qemu-devel@nongnu.org; Wed, 23 Mar 2016 12:53:48 -0400 Received: from mx1.redhat.com ([209.132.183.28]:48410) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aim2V-0008GZ-Ew for qemu-devel@nongnu.org; Wed, 23 Mar 2016 12:53:47 -0400 References: <1458632629-4649-1-git-send-email-liang.z.li@intel.com> <20160323013715.GB13750@linux-gk3p> From: Eric Blake Message-ID: <56F2CA16.5030900@redhat.com> Date: Wed, 23 Mar 2016 10:53:42 -0600 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="XrNx3GQE71qXbTe464emG4eAnVGv7OTbV" Subject: Re: [Qemu-devel] [RFC Design Doc]Speed up live migration by skipping free pages List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Li, Liang Z" , Wei Yang Cc: "linux-kernel@vger.kenel.org" , "ehabkost@redhat.com" , "kvm@vger.kernel.org" , "mst@redhat.com" , "simhan@hpe.com" , "quintela@redhat.com" , "qemu-devel@nongnu.org" , "dgilbert@redhat.com" , "jitendra.kolhe@hpe.com" , "rkagan@virtuozzo.com" , "amit.shah@redhat.com" , "pbonzini@redhat.com" , "rth@twiddle.net" , "mohan_parthasarathy@hpe.com" This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --XrNx3GQE71qXbTe464emG4eAnVGv7OTbV Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 03/23/2016 01:18 AM, Li, Liang Z wrote: >>> >>> >From guest's point of view, there are some pages currently not used = by >> >> I see in your original RFC patch and your RFC doc, this line starts wi= th a >> character '>'. Not sure this one has a special purpose? >> >=20 > No special purpose. Maybe it's caused by the email client. I didn't fin= d the > character in the original doc. >=20 Yes, it's an artifact used by many mailers so that mailboxes don't get confused by a bare "From" at the start of a line but in the middle rather than the start of a message. It's possible to avoid the artifact by using quoted-printable and escaping the 'F', and I'm honestly a bit surprised that git doesn't do it automatically. --=20 Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org --XrNx3GQE71qXbTe464emG4eAnVGv7OTbV Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 Comment: Public key at http://people.redhat.com/eblake/eblake.gpg Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBCAAGBQJW8soWAAoJEKeha0olJ0NqDSMH/3erDELDpovzc5kEdQXDy0v3 U5SYa18FSHBXmft47NrWYlxnn8aBWIjB1XcUMwzYKLj5krlT03+08yS2/vkBEg1J Gg70oGX5lqUm5P6eTuIPspUy7RAkJZhJm5JOB9FZo6F30d7G4KAmn/I4O+pfUu6s HKH49iEzmbQgRr8pfA/tdNdx3wrF6NOLAqaf5H2cvrS8BVttQZOgHaY7/Hr2Bcrn T29QdfuET16DyQw+6h8zQPuJUvqJerW4eFiN3+9IFgRZUs3SqgBOKBKkNBV4PesC gZS8W7O1XnoFDMxaBg2Lwq5EXO37OYoKJtUsK+6lHTov4RW4xEkYYHgznQG9i+U= =xit1 -----END PGP SIGNATURE----- --XrNx3GQE71qXbTe464emG4eAnVGv7OTbV--