Date: Sun, 19 Jan 2020 08:58:37 +0000 From: bugzilla-noreply@freebsd.org To: virtualization@FreeBSD.org Subject: [Bug 236922] Virtio fails as QEMU-KVM guest with Q35 chipset on Ubuntu 18.04.2 LTS Message-ID: <bug-236922-27103-b0kkKtAzNz@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-236922-27103@https.bugs.freebsd.org/bugzilla/> References: <bug-236922-27103@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D236922 --- Comment #50 from John Hartley <drum@graphica.com.au> --- (In reply to Tommy P from comment #43) Hi Tomny P, Teting: Q35, OVMF, VirtIO Storage, em / vmx / re with netmap networking I believe I have not got repeatable way to get VirtIO (minus networking) and other general networking going on 12.1 . I outlined process here: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D236922#c49 Which in summary: 1. Use new VirtIO update provide by your patch 2. Disable VirtIO network from dev/virtio and modules/virtio 3. Apply netmap updates, but extend scope of condition compilation in sys/dev/netmap/if_ptnet.c to as per this snippet: <<snip>> ... #include <dev/netmap/netmap_mem2.h> #ifdef WITH_PTNETMAP #include <dev/virtio/network/virtio_net.h> #ifndef INET #error "INET not defined, cannot support offloadings" #endif ... <<end snip>> 4. Remove vtnet driver from sys/amd64/conf/GENERIC & virtio network from sys/conf/files 5. Ensure you have right QEMU Q35 machine version. There is a caveat. This build works on with Q35 v 3.1 not 4.0. From: virsh dumpxml <<snip>> ... <type arch=3D'x86_64' machine=3D'pc-q35-3.1'>hvm</type> ... <<end snip>> So VirtIO is seeing some difference in behaviour. So that for: - Q35-3.1 you get VirtIO Storage - Q35-4.0 you do not get VirtIO Storage Matts has also been seeing variation in netmap networking cross QEMU 3.1 and QEMU 4.1, so this machine variation across release is likely related: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D241774#c69 Likely as per MattS case this is new bug and explains why people are getting different testing results. Cheers, John Hartley. --=20 You are receiving this mail because: You are the assignee for the bug.=
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