From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 271F6C433C1 for ; Thu, 25 Mar 2021 23:58:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E870C61A40 for ; Thu, 25 Mar 2021 23:58:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229812AbhCYX5a (ORCPT ); Thu, 25 Mar 2021 19:57:30 -0400 Received: from maynard.decadent.org.uk ([95.217.213.242]:35590 "EHLO maynard.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229574AbhCYX47 (ORCPT ); Thu, 25 Mar 2021 19:56:59 -0400 Received: from [2a02:1811:d34:3700:3b8d:b310:d327:e418] (helo=deadeye) by maynard with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lPZqF-000196-4c; Fri, 26 Mar 2021 00:56:43 +0100 Received: from ben by deadeye with local (Exim 4.94) (envelope-from ) id 1lPZqD-00210q-FM; Fri, 26 Mar 2021 00:56:41 +0100 Message-ID: <7e2ab5dbd76773c03f6e27af6fb8254c13e6402f.camel@decadent.org.uk> Subject: Re: [PATCH] x86/tlb: Flush global mappings when KAISER is disabled From: Ben Hutchings To: Sasha Levin , Borislav Petkov Cc: stable , Hugh Dickins , Babu Moger , Paolo Bonzini , Jim Mattson , Vitaly Kuznetsov , Wanpeng Li , kvm list , Joerg Roedel , the arch/x86 maintainers , LKML , Ingo Molnar , "H . Peter Anvin" , Thomas Gleixner , Makarand Sonare , Sean Christopherson , carnil@debian.org Date: Fri, 26 Mar 2021 00:56:23 +0100 In-Reply-To: References: <4a72f780-3797-229e-a938-6dc5b14bec8d@amd.com> <20210311235215.GI5829@zn.tnic> <20210324212139.GN5010@zn.tnic> <20210325095619.GC31322@zn.tnic> <20210325102959.GD31322@zn.tnic> <20210325200942.GJ31322@zn.tnic> Content-Type: multipart/signed; micalg="pgp-sha512"; protocol="application/pgp-signature"; boundary="=-BZCkuB3+koKnPKrmigAc" User-Agent: Evolution 3.38.2-1 MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:1811:d34:3700:3b8d:b310:d327:e418 X-SA-Exim-Mail-From: ben@decadent.org.uk X-SA-Exim-Scanned: No (on maynard); SAEximRunCond expanded to false Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --=-BZCkuB3+koKnPKrmigAc Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Thu, 2021-03-25 at 19:19 -0400, Sasha Levin wrote: > On Thu, Mar 25, 2021 at 04:36:55PM -0400, Sasha Levin wrote: > > On Thu, Mar 25, 2021 at 09:09:42PM +0100, Borislav Petkov wrote: > > > Hi stable folks, > > >=20 > > > the patch below fixes kernels 4.4 and 4.9 booting on AMD platforms wi= th > > > PCID support. It doesn't have an upstream counterpart because it patc= hes > > > the KAISER code which didn't go upstream. It applies fine to both of = the > > > aforementioned kernels - please pick it up. > >=20 > > Queued up for 4.9 and 4.4, thanks! > >=20 > > > Jim Mattson reported that Debian 9 guests using a 4.9-stable kernel > > > are exploding during alternatives patching: > >=20 > > (Cc Ben & Salvatore) > >=20 > > I'm not sure if 4.9 or Debian is still alive or not, but FYI... > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 *on >=20 > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 :) We're supporting both 4.9 and 4.19 in Debian 9. The general rule is we carry on with the same stable kernel branch for the whole 5 year support period, but add the option of using the kernel version from the next stable release. Ben. --=20 Ben Hutchings Teamwork is essential - it allows you to blame someone else. --=-BZCkuB3+koKnPKrmigAc Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEErCspvTSmr92z9o8157/I7JWGEQkFAmBdIygACgkQ57/I7JWG EQmePRAAou+cNc9EAXhWMu8MifMJaX2sqIkYtavWuhzOsy6IuDpi129ppi2m/7kv rzTjBYKj7AYz0N/az8lPhEtOPE3mfiusppv2a1f4HnHWkjRZMegw9JKjR9cANxN3 ZaXrvPRciV0Afv4KVsPTX2NhqQwjMILB646X69/CmOgmq8KP5OQQ4wM7RpIleeWA Q/MDBD0HO9lIr/16HxSOUUhhezZHBxE27tNjWMRrWALntlKUxc6Z/upr3A89Uyte ggEYiI7JIp4jTbvG7GW7qyMSYT2zs69iE17TayzZQUl4L2iSfDDI2jQtg4OgKDel XEkwUy/S7PHP5hSHglwf+W+ef1e3946z3J9eJ5XFDPDR0WIj/+dFNzKBi/iM+1JW SQyZ1XHNEYXDW9WrfGKaqYpZEefcjZhCvYmhHFrmWUaYS0upb7vM2Un56BRufNJ9 34k2BKCFs4e5G7HDeVBSIQ2LChvx+05b0KVP83I9m5ghGr3kVOgH2L6sCPiEeAPF E53DBNf8lL7xiwL10HERNUVgxLbE7yp+K0JKC9B6CTOr/VDUEilQmGb16j4EIucc HiPlqUiomHTcaExu/lSBET3HZxunTWGoA1ju+C/rlE6mjK+JKP7dRhpxbq7KUmBS bW6vzaiys+AJJm/9paGDCiYvjAynu/wZT/PY62TpWp0LjZDHq1M= =CDeP -----END PGP SIGNATURE----- --=-BZCkuB3+koKnPKrmigAc--