Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754020AbcJDMsZ (ORCPT ); Tue, 4 Oct 2016 08:48:25 -0400 Received: from mx1.redhat.com ([209.132.183.28]:36996 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752074AbcJDMsY (ORCPT ); Tue, 4 Oct 2016 08:48:24 -0400 Message-ID: <1475585299.21644.53.camel@redhat.com> Subject: Re: [PATCH RFC 2/5] x86,fpu: delay FPU register loading until switch to userspace From: Rik van Riel To: Ingo Molnar , Andy Lutomirski Cc: Dave Hansen , "linux-kernel@vger.kernel.org" , X86 ML , Thomas Gleixner , Paolo Bonzini , Ingo Molnar , Andrew Lutomirski , "H. Peter Anvin" , Borislav Petkov , Linus Torvalds Date: Tue, 04 Oct 2016 08:48:19 -0400 In-Reply-To: <20161004063552.GA1035@gmail.com> References: <1475353895-22175-1-git-send-email-riel@redhat.com> <1475353895-22175-3-git-send-email-riel@redhat.com> <1475366900.21644.8.camel@redhat.com> <1475529679.4622.27.camel@redhat.com> <1475544579.21644.37.camel@redhat.com> <20161004063552.GA1035@gmail.com> Content-Type: multipart/signed; micalg="pgp-sha256"; protocol="application/pgp-signature"; boundary="=-ku2Hox74uYqQlraKdY34" Mime-Version: 1.0 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.32]); Tue, 04 Oct 2016 12:48:23 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1730 Lines: 50 --=-ku2Hox74uYqQlraKdY34 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Tue, 2016-10-04 at 08:35 +0200, Ingo Molnar wrote: > * Andy Lutomirski wrote: >=C2=A0 > > > We can get rid of fpu.counter, since nobody uses it > > > any more. > >=20 > > We should definitely do this. > >=20 > > Maybe getting in some cleanups first (my lazy fpu deletion, > > fpu.counter removal, etc) first is the way to go. >=20 > Could you guys please submit all pending FPU bits that aren't new > functionality to -tip? I'll remove lazy FPU handling if you don't > beat me to it. >=20 > Plus after lazy FPU removal we should take another good look and > make the FPU state machine even more obvious and self-documenting. >=20 > Upstream merge commit 597f03f9d133 would be a good base. I am flying out to Europe tomorrow, but will try to get you the cleanups some time this week. =C2=A0Besides the first four patcehs from Andy, there is a shortlist of a few more small changes. --=20 All Rights Reversed. --=-ku2Hox74uYqQlraKdY34 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 v2 iQEcBAABCAAGBQJX86UUAAoJEM553pKExN6Dfp0H/jHjJEjdLdH1DHrpLKBvey7L DW/53N1OZP6fyPj5wI+/tbmALWRUaYX7nkyvTBm377EsqjIgTAF+wVRRBsH7p4Q+ uYM5sfuaRoQKPhZzULRlTkaQ/Q6bSHt23wkyBg8v1lzz3xMfQieUC9sDGah9vi8S tJfNH6wO0BZ8dJrfCIl5lxDfV2/rxnFGJYsecaAp6CJ4igdptU5hflqiWxrEQFbo c8aZ+S9Z2Si+vPbZkyF0JbezAVU1aKttFhpMR56SYP876xgnjntglV5LEr8fQpuN SnkREW1bNwxzbULivJPZVMNXD5bMNilcmYqA4ynSmjommZe7jt5kjk7T01uI5JU= =1AAs -----END PGP SIGNATURE----- --=-ku2Hox74uYqQlraKdY34--