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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 3C1E5C2BA16 for ; Tue, 7 Apr 2020 07:48:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0425F20678 for ; Tue, 7 Apr 2020 07:48:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727775AbgDGHso (ORCPT ); Tue, 7 Apr 2020 03:48:44 -0400 Received: from jabberwock.ucw.cz ([46.255.230.98]:38148 "EHLO jabberwock.ucw.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726635AbgDGHsn (ORCPT ); Tue, 7 Apr 2020 03:48:43 -0400 Received: by jabberwock.ucw.cz (Postfix, from userid 1017) id D96751C4A6E; Tue, 7 Apr 2020 09:48:41 +0200 (CEST) Date: Tue, 7 Apr 2020 09:48:41 +0200 From: Pavel Machek To: Chris Wilson Cc: Linus Torvalds , airlied@redhat.com, intel-gfx@lists.freedesktop.org, jani.nikula@linux.intel.com, joonas.lahtinen@linux.intel.com, kernel list , matthew.auld@intel.com, rodrigo.vivi@intel.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com Subject: Re: Linus, please revert 7dc8f11437: regression in 5.7-rc0, hangs while attempting to run X Message-ID: <20200407074841.GB18673@amd.ucw.cz> References: <20200407072047.GA18532@amd.ucw.cz> <158624426770.4794.6070200474948860768@build.alporthouse.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="hQiwHBbRI9kgIhsi" Content-Disposition: inline In-Reply-To: <158624426770.4794.6070200474948860768@build.alporthouse.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --hQiwHBbRI9kgIhsi Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi! > > > 7dc8f1143778a35b190f9413f228b3cf28f67f8d > > >=20 > > > drm/i915/gem: Drop relocation slowpath > > > =20 > > > Since the relocations are no longer performed under a global > > > struct_mutex, or any other lock, that is also held by pagefault h= andlers, > > > we can relax and allow our fast path to take a fault. As we no lo= nger > > > need to abort the fast path for lock avoidance, we no longer need= the > > > slow path handling at all. > > >=20 > > > causes regression on thinkpad x220: instead of starting X, I'm looking > > > at blinking cursor. > > >=20 > > > Reverting the patch on too of 919dce24701f7b3 fixes things for me. > >=20 > > I have received no feedback from patch authors, and I believe we don't > > want to break boot in -rc1 on Intel hardware... so the commit should > > be simply reverted. >=20 > Beyond the fix already submitted? I did not get that one, can I have a pointer? Pavel --=20 (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html --hQiwHBbRI9kgIhsi Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iF0EABECAB0WIQRPfPO7r0eAhk010v0w5/Bqldv68gUCXowwWQAKCRAw5/Bqldv6 8ptBAJ9iwHYXM0KdeR4HdWyZ7IEsER3vHACcC1g2U0sCmmYeFy9vvaeM+OCph0g= =8TpN -----END PGP SIGNATURE----- --hQiwHBbRI9kgIhsi--