From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dario Faggioli Subject: Re: Xen 4.2 Release Plan / TODO [and 1 more messages] Date: Thu, 12 Apr 2012 23:48:43 +0200 Message-ID: <1334267323.2417.3.camel@Abyss> References: <1333362402.25602.36.camel@zakaz.uk.xensource.com> <20357.44324.27939.514126@mariner.uk.xensource.com> <20357.44475.632787.365339@mariner.uk.xensource.com> <1334216554.12209.239.camel@dagon.hellion.org.uk> <1334216141.12209.236.camel@dagon.hellion.org.uk> <20358.47143.994639.76453@mariner.uk.xensource.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============2851872401064207056==" Return-path: In-Reply-To: <20358.47143.994639.76453@mariner.uk.xensource.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Ian Jackson Cc: Ian Campbell , xen-devel List-Id: xen-devel@lists.xenproject.org --===============2851872401064207056== Content-Type: multipart/signed; micalg="pgp-sha1"; protocol="application/pgp-signature"; boundary="=-P1ICXe+U+C0FLVkq+lOc" --=-P1ICXe+U+C0FLVkq+lOc Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Thu, 2012-04-12 at 12:10 +0100, Ian Jackson wrote:=20 > > I think we can defer this to 4.3? The existing interface may be pants > > but at least the name is pretty explicit that it will block. I think > > this should then be easy enough to sort out in a backward compatible > > manner in 4.3 since I expect the name of the function would change and > > we could retain the old name in terms of the new for compat. >=20 > The problem isn't just that it blocks but also that the semantics are > wrong. This is all related to the problems of allocating memory. We > had a recent conversation where we concluded that we needed hypervisor > changes to do memory assignment in a race-free way. =20 > I remember that. :-) This is basically the reason why I said, earlier in this thread, that warning too much about moving/reworking the locking in xl is not that important, as it we won't be able to solve _this_ issue anyway just playing with it. > This is not 4.3 > material. > Just to be sure I get it, you think we need to have the creation-vs-ballooning potential race solved *before* 4.2 ? Thanks and Regards, Dario --=20 <> (Raistlin Majere) ----------------------------------------------------------------- Dario Faggioli, Ph.D, http://retis.sssup.it/people/faggioli Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK) --=-P1ICXe+U+C0FLVkq+lOc Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iEYEABECAAYFAk+HTbwACgkQk4XaBE3IOsTkpgCcDQEJXkzY9t0LSH06dISyrydz OC4AoKAJR6lfxrka+gHe3CrJ7y9BqlZc =EwTe -----END PGP SIGNATURE----- --=-P1ICXe+U+C0FLVkq+lOc-- --===============2851872401064207056== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel --===============2851872401064207056==--