From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751259AbdBAE4w (ORCPT ); Tue, 31 Jan 2017 23:56:52 -0500 Received: from ozlabs.org ([103.22.144.67]:37157 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750946AbdBAE4v (ORCPT ); Tue, 31 Jan 2017 23:56:51 -0500 Date: Wed, 1 Feb 2017 15:56:36 +1100 From: David Gibson To: Paul Mackerras Cc: sjitindarsingh@gmail.com, benh@kernel.crashing.org, thuth@redhat.com, lvivier@redhat.com, linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCHv2 00/11] KVM implementation of PAPR HPT resizing extension Message-ID: <20170201045636.GT30639@umbus.fritz.box> References: <20161220054907.9204-1-david@gibson.dropbear.id.au> <20170131221813.GA3305@fergus.ozlabs.ibm.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="9r3HF47jptiQlX4s" Content-Disposition: inline In-Reply-To: <20170131221813.GA3305@fergus.ozlabs.ibm.com> User-Agent: Mutt/1.7.1 (2016-10-04) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --9r3HF47jptiQlX4s Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Feb 01, 2017 at 09:18:13AM +1100, Paul Mackerras wrote: > On Tue, Dec 20, 2016 at 04:48:56PM +1100, David Gibson wrote: > > Here is the KVM implementation for the proposed PAPR extension which > > allows the runtime resizing of a PAPR guest's Hashed Page Table (HPT). > >=20 > > Using this requires a guest kernel with support for the extension. > > Patches for guest side support in Linux were posted earlier: > > https://lists.ozlabs.org/pipermail/linuxppc-dev/2016-December/152164.= html > >=20 > > It also requires userspace (i.e. qemu) to intercept the HPT resizing > > hypercalls and invoke the KVM ioctl()s to implement them. This is > > done instead of having KVM direclty intercept the hypercalls, so that > > userspace can, if useful, impose additional restrictions on resizes: > > for example it could refuse them entirely if policy for the VM > > precludes resizing, or it could limit the size of HPT the guest can > > request to meet resource limits. > >=20 > > Patches to implement the userspace part of HPT resizing are proposed > > for qemu-2.9, and can be found at: > > https://github.com/dgibson/qemu/tree/hpt-resize > >=20 > > I'm posting these now, in the hopes that both these and the > > corresponding guest side patches can be staged and merged for the 4.11 > > window. >=20 > Thanks, series applied to my kvm-ppc-next branch. Great. Where can I grab that tree? > Next time, please cc kvm-ppc@vger.kernel.org so I shows up in > patchwork and I don't miss it. Sorry, I hadn't realized that list existed. Noted for future reference. --=20 David Gibson | I'll have my music baroque, and my code david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_ | _way_ _around_! http://www.ozlabs.org/~dgibson --9r3HF47jptiQlX4s Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAEBCAAGBQJYkWp+AAoJEGw4ysog2bOS9LcP+QHPPJTo6FFkmiY7hp8UnN0u dW8xfpsRC81sv7OW2IjpRJ5w9GafMNO/g68n124y7Df68Dg4ql3N27BdfzP5cs8/ JvU4F4BQGKwTMxzCrNK/OFif+mrYOmTCIEVIx+/QDZXLwI4FzxSHJ+eVT0IzXGyO mK2DauA9ujuaCHVYGqDpcqw0MRjqnHX4lRWL4FodYEy08NApHyc8+SdYqS5sS85v Y+DNSfbTwLV0KOY7PIBHi0liFqG1C035Mnp6obfgOg6HJwxrujDdmEK/G7FSFj72 kTOdYSQKUkZA9dBd5Q5996XAkUzwVxS2GrtD2nKdm4fOV3LEBUEYlKqwvzG9UQw+ ej5Eh7eLB4kjPbUeuQ1dd+IV/Ind0r3vMnpXZDxdkCNiPpQ1bjbf5jO+g0Lk2bQo glICTe07wEGRXml3mT58vvt/IOAk3W07VivqD8LUFveinr+p71pNpEE1VmcXW4nW W3sEBajb5Zydx6fg+ov4bUG5AyfRyt8XgNam2n6F01HHNmII7f2Q3GxM2Cjr2Gv2 ESbvPUYdOl/SvfW4W6lhm53NBENyK6UV02FO2EiEiGKolSQh5ooVtSFTfoKIdy/E ixGw4XNLiWKUZgc5HXM5C6KgLIhItdkIk/t9+NbZQk0bm3/F8Po1bOcA0tv3VWTv qS45usV8RszC6KoU+qpp =IAgI -----END PGP SIGNATURE----- --9r3HF47jptiQlX4s--