From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:38619) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XgHXX-0004rQ-Bd for qemu-devel@nongnu.org; Mon, 20 Oct 2014 14:18:48 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XgHXR-0001uy-W7 for qemu-devel@nongnu.org; Mon, 20 Oct 2014 14:18:43 -0400 Received: from mout.web.de ([212.227.15.14]:57945) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XgHXR-0001us-Mq for qemu-devel@nongnu.org; Mon, 20 Oct 2014 14:18:37 -0400 Message-ID: <544551EF.6050008@web.de> Date: Mon, 20 Oct 2014 20:18:23 +0200 From: Jan Kiszka MIME-Version: 1.0 References: <1413797938-18100-1-git-send-email-mst@redhat.com> <877fzvq87z.fsf@blackfin.pond.sub.org> <20141020142356.GD11062@redhat.com> <1413818157.7969.38.camel@ori.omang.mine.nu> In-Reply-To: <1413818157.7969.38.camel@ori.omang.mine.nu> Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="xq1NQ13Cm82kj9gBr7BJM4iPpJHVB1SOS" Subject: Re: [Qemu-devel] [PATCH] intel_iommu: fix VTD_SID_TO_BUS List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Knut Omang , "Michael S. Tsirkin" Cc: qemu-devel , Le Tan , Anthony Liguori , Markus Armbruster This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --xq1NQ13Cm82kj9gBr7BJM4iPpJHVB1SOS Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 2014-10-20 17:15, Knut Omang wrote: > On Mon, 2014-10-20 at 17:23 +0300, Michael S. Tsirkin wrote: >> WRT intel_iommu, it does not yet seem to be as fully functional as I >> hoped. People also discussed the best way to handle virtio versus iom= mu >> (it bypasses it ATM). >> I'd like to suggest we hide the iommu from the command line >> help for 2.2, this way people don't activate it mistakenly. >> >> Let's make it more complete and then enable for 2.3. >> >> Thoughts? >=20 > Note that you have to explicitly enable iommu support in the guest > (intel_iommu=3Don on the boot command line in the Linux case) for it to= > have any effect apart from being visible in the DMAR table and logging > so it should not really do any harm. >=20 > From my perspective the feature works well and I have been running a fe= w > virtual machines with div.network workload stable using the additional = 4 > patches referred to in this post (Jan's two for interrupt remapping and= > two bug fixes and enhancements from me for running behind bridges) : >=20 > https://lists.nongnu.org/archive/html/qemu-devel/2014-08/msg02986.html >=20 > Latest version here: >=20 > https://github.com/knuto/qemu/tree/sriov_patches_v2 >=20 > Give me a hint and I can rebase and post the two iommu patches, I > believe Jan wanted to do some more work on the interrupt remapping > first. You should avoid to depend on my series regarding upstreaming of fixes or features that can be done independently. Did your bridging fixes depend on IR? Can you break them up? Jan --xq1NQ13Cm82kj9gBr7BJM4iPpJHVB1SOS Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iEYEARECAAYFAlRFUfgACgkQitSsb3rl5xQawACghHOCZGsB2SN9yl98yIe8M8xA 5K8AnjTO1nZAPvUwMpvjVF8KdbzsUxDS =QuE4 -----END PGP SIGNATURE----- --xq1NQ13Cm82kj9gBr7BJM4iPpJHVB1SOS--