From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:58287) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aXkvh-0003F0-HV for qemu-devel@nongnu.org; Mon, 22 Feb 2016 02:29:14 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aXkve-0000dt-Ay for qemu-devel@nongnu.org; Mon, 22 Feb 2016 02:29:13 -0500 Received: from mout.web.de ([212.227.15.3]:50894) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aXkve-0000de-1X for qemu-devel@nongnu.org; Mon, 22 Feb 2016 02:29:10 -0500 References: <1456078260-6669-1-git-send-email-davidkiarie4@gmail.com> <56CA1C28.6090104@web.de> From: Jan Kiszka Message-ID: <56CAB8BF.5040605@web.de> Date: Mon, 22 Feb 2016 08:29:03 +0100 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="oTc6r0OJGgJGG4WHmeif5dgbj1RRbdbh0" Subject: Re: [Qemu-devel] [V6 0/4] AMD IOMMU List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: David Kiarie Cc: Marcel Apfelbaum , Valentine Sinitsyn , QEMU Developers , "Michael S. Tsirkin" This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --oTc6r0OJGgJGG4WHmeif5dgbj1RRbdbh0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 2016-02-22 06:57, David Kiarie wrote: > On Sun, Feb 21, 2016 at 11:20 PM, Jan Kiszka wrote:= >> On 2016-02-21 19:10, David Kiarie wrote: >>> Hello there, >>> >>> Repost, AMD IOMMU patches version 6. >>> >>> Changes since version 5 >>> -Fixed macro formating issues >>> -changed occurences of IO MMU to IOMMU for consistency >>> -Fixed capability registers duplication >>> -Rebased to current master >> >> I suspect this still has some subtle bugs: I'm running the patches ove= r >> master with standard Linux distro as guest, full desktop, and I'm >> getting sporadic segfaults of arbitrary programs. These disappear once= I >> disable the IOMMU or switch to the Intel version. >=20 > Is this L1 guest or L2 guest ? - haven't got any such so far. It's L1 only. >=20 >> >> How did you test so far? >=20 > I mainly test by logging. I've tested L1 without any iommu-related > command line parameters and with L1 with 'iommu=3D1 iommu=3Dpt'. L2 gue= st; > passed-through a device checked it's working correctly, that all. > These guests barely have any load though. I quickly reproduced the issue by starting some "heavier" applications, a browser or an office suite. Something is apparently always corrupted then, data or code, thus the crashes. Jan --oTc6r0OJGgJGG4WHmeif5dgbj1RRbdbh0 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iEYEARECAAYFAlbKuL8ACgkQitSsb3rl5xT/ywCfa31RZriaS0BV7Uw/aLSiew80 IksAnA1mTsd5BumE/X0ar/FpKB5Kk8CM =fX+E -----END PGP SIGNATURE----- --oTc6r0OJGgJGG4WHmeif5dgbj1RRbdbh0--