From owner-freebsd-x11@FreeBSD.ORG Mon Nov 8 12:26:51 2010 Return-Path: <owner-freebsd-x11@FreeBSD.ORG> Delivered-To: freebsd-x11@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E1E521065670; Mon, 8 Nov 2010 12:26:51 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from mail.zoral.com.ua (mx0.zoral.com.ua [91.193.166.200]) by mx1.freebsd.org (Postfix) with ESMTP id 3C4508FC17; Mon, 8 Nov 2010 12:26:50 +0000 (UTC) Received: from deviant.kiev.zoral.com.ua (root@deviant.kiev.zoral.com.ua [10.1.1.148]) by mail.zoral.com.ua (8.14.2/8.14.2) with ESMTP id oA8CQhUu088435 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 8 Nov 2010 14:26:43 +0200 (EET) (envelope-from kostikbel@gmail.com) Received: from deviant.kiev.zoral.com.ua (kostik@localhost [127.0.0.1]) by deviant.kiev.zoral.com.ua (8.14.4/8.14.4) with ESMTP id oA8CQhqE022822; Mon, 8 Nov 2010 14:26:43 +0200 (EET) (envelope-from kostikbel@gmail.com) Received: (from kostik@localhost) by deviant.kiev.zoral.com.ua (8.14.4/8.14.4/Submit) id oA8CQhCU022821; Mon, 8 Nov 2010 14:26:43 +0200 (EET) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: deviant.kiev.zoral.com.ua: kostik set sender to kostikbel@gmail.com using -f Date: Mon, 8 Nov 2010 14:26:43 +0200 From: Kostik Belousov <kostikbel@gmail.com> To: Andriy Gapon <avg@freebsd.org> Message-ID: <20101108122643.GE2392@deviant.kiev.zoral.com.ua> References: <4CD3B1D2.30003@icyb.net.ua> <4CD7E401.1010206@freebsd.org> <20101108120403.GC2392@deviant.kiev.zoral.com.ua> <4CD7E80F.4090100@freebsd.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="iTK5zgLp6gXhzOi1" Content-Disposition: inline In-Reply-To: <4CD7E80F.4090100@freebsd.org> User-Agent: Mutt/1.4.2.3i X-Virus-Scanned: clamav-milter 0.95.2 at skuns.kiev.zoral.com.ua X-Virus-Status: Clean X-Spam-Status: No, score=-3.4 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00, DNS_FROM_OPENWHOIS autolearn=no version=3.2.5 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on skuns.kiev.zoral.com.ua Cc: freebsd-x11@freebsd.org, freebsd-current@freebsd.org Subject: Re: radeon_cp_texture: page fault with non-sleepable locks held X-BeenThere: freebsd-x11@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: X11 on FreeBSD -- maintaining and support <freebsd-x11.freebsd.org> List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-x11>, <mailto:freebsd-x11-request@freebsd.org?subject=unsubscribe> List-Archive: <http://lists.freebsd.org/pipermail/freebsd-x11> List-Post: <mailto:freebsd-x11@freebsd.org> List-Help: <mailto:freebsd-x11-request@freebsd.org?subject=help> List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-x11>, <mailto:freebsd-x11-request@freebsd.org?subject=subscribe> X-List-Received-Date: Mon, 08 Nov 2010 12:26:52 -0000 --iTK5zgLp6gXhzOi1 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Nov 08, 2010 at 02:07:43PM +0200, Andriy Gapon wrote: > on 08/11/2010 14:04 Kostik Belousov said the following: > > On Mon, Nov 08, 2010 at 01:50:25PM +0200, Andriy Gapon wrote: > >> on 05/11/2010 09:27 Andriy Gapon said the following: > >>> > >>> I use FreeSBD head and KDE 4 with all the bells and whistles enabled. > >>> Apparently recent KDE update has enabled even more of them, because I= started to > >>> have panics with a kernel that has INVARIANTS and WITNESS enabled. > >> > >> I tried to solve the problem by changing drmdev from mutex to sx: > >> http://people.freebsd.org/~avg/drm-sx.diff > > I remember that drm lock can be acquired from the interrupt thread, if > > the card supports interrupts. Changing it to sx cannot work then, becau= se > > interrupt threads cannot sleep. Most likely, you are getting around it > > since r600 not yet used interrupts on FreeBSD. > >=20 > > I think the solution is to drop drm lock around copyin. >=20 > Kostik, >=20 > thanks a lot for the help! > Are familiar enough with the code to tell if drmdev is always held at that > place? Or should I first check if it's actually owned and drop/reacquire= it > accordingly? I think you can assume that the lock is always owned. --iTK5zgLp6gXhzOi1 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (FreeBSD) iEYEARECAAYFAkzX7IIACgkQC3+MBN1Mb4jB1wCgyV//8jHNz1bQucRshL/u/oh+ c0YAoLWMqVoUJYj4O4p/Xwxirsbwbd7O =MrAg -----END PGP SIGNATURE----- --iTK5zgLp6gXhzOi1--