From: Jan Kiszka Subject: Re: Device assignment, shared IRQs, uio_pci_generic Date: Mon, 01 Nov 2010 12:27:06 +0100 Message-ID: <4CCEA40A.1010004@web.de> References: <4CCC40A6.7080008@web.de> <1288458364.2893.16.camel@x201> <4CCD85B7.1030904@web.de> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enigC5A58972659FB8E004C25BFD" Cc: "Michael S. Tsirkin" , kvm To: Alex Williamson Return-path: Received: from fmmailgate02.web.de ([217.72.192.227]:39472 "EHLO fmmailgate02.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754914Ab0KAL1S (ORCPT ); Mon, 1 Nov 2010 07:27:18 -0400 In-Reply-To: <4CCD85B7.1030904@web.de> Sender: kvm-owner@vger.kernel.org List-ID: This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigC5A58972659FB8E004C25BFD Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Am 31.10.2010 16:05, Jan Kiszka wrote: > Still not working here are ehci, ath9k and e1000e when passed through. > They receive IRQs, but somehow the Linux guest drivers are unhappy abou= t > the device states (the e1000e detects "Hardware Unit Hang" e.g.). This > is independent of my patches. Anyone any ideas? Improper configurations= > of the BIOS? I stumbled over this in the kernel log: >=20 > DMAR: BIOS has allocated no shadow GTT; disabling IOMMU for graphic= s >=20 Argh, no one told me that there is CONFIG_DMAR_DEFAULT_ON and that you have to pass "intel_iommu=3Don" if that config switch is off like here. Moreover, I somehow assumed "iommu=3D0" on the command line means "use IOMMU with index 0" (don't ask me why). Usability deserves some patches - later. So it's starting to work, already accessed some devices (ath9k did a successful scan), but now it's crashing in intel_iommu_attach_device. Looks like use after release. Sigh. Jan --------------enigC5A58972659FB8E004C25BFD Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.15 (GNU/Linux) Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org/ iEYEARECAAYFAkzOpA0ACgkQitSsb3rl5xSw3ACfbDYyGiXJbZsaDIUt5+2Xh0Cj +6sAn3zSjCu7ITEKqD1AY9Wb6RlALhh0 =9gQX -----END PGP SIGNATURE----- --------------enigC5A58972659FB8E004C25BFD--