From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:33946) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cgpzx-0000HC-Fo for qemu-devel@nongnu.org; Thu, 23 Feb 2017 04:47:42 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cgpzu-0005Vs-Dz for qemu-devel@nongnu.org; Thu, 23 Feb 2017 04:47:41 -0500 Received: from mx1.redhat.com ([209.132.183.28]:53030) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1cgpzu-0005VB-7L for qemu-devel@nongnu.org; Thu, 23 Feb 2017 04:47:38 -0500 References: <1487361200-29966-1-git-send-email-mst@redhat.com> <1487361200-29966-13-git-send-email-mst@redhat.com> <1487681835.2694.76.camel@redhat.com> <83a2d0c9-23a4-32b1-ffe7-b33bbe9ea25d@redhat.com> <726a3292-9e27-6748-9669-a7c21cbf3b6e@redhat.com> <20170222173225.4f48dd99@t450s.home> <76987077-886a-5c6d-1291-c1734a5bc3b0@kaod.org> From: Paolo Bonzini Message-ID: <008174eb-429f-e2f8-f96d-52234dc1dffd@redhat.com> Date: Thu, 23 Feb 2017 10:47:33 +0100 MIME-Version: 1.0 In-Reply-To: <76987077-886a-5c6d-1291-c1734a5bc3b0@kaod.org> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Subject: Re: [Qemu-devel] [PULL 12/23] virtio: use VRingMemoryRegionCaches for avail and used rings List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: =?UTF-8?Q?C=c3=a9dric_Le_Goater?= , Alex Williamson Cc: Peter Maydell , "Michael S. Tsirkin" , Jason Wang , qemu-devel@nongnu.org, Gerd Hoffmann , Stefan Hajnoczi , Laszlo Ersek , David Gibson On 23/02/2017 10:33, C=E9dric Le Goater wrote: > I still have migration issues with this patch on ppc, which fails > on the target guest with :=20 >=20 > qemu-system-ppc64: VQ 0 size 0x80 < last_avail_idx 0xe1e - used_idx 0x0 > qemu-system-ppc64: Failed to load virtio-blk:virtio > qemu-system-ppc64: error while loading state for instance 0x0 of device= 'pci@800000020000000:01.0/virtio-blk' > qemu-system-ppc64: load of migration failed: Operation not permitted Stefan sent patches for that. As a workaround, perhaps you can try disabling virtio-modern. Paolo