Bhyve NIC Passthru broken
- Reply: Santiago Martinez : "Re: Bhyve NIC Passthru broken"
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Date: Thu, 03 Aug 2023 04:48:08 UTC
Hello, Starting a vm (FreeBSD 13.2) with passthru NIC results a constant flood of error messages on the host (FreeBSD 14-CURRENT). The NIC refuses to work in the vm (it works on the host if I turn off the passthru). This problem is persistent since 13.1-Release. (Sidenote: the passthru mostly works under the EOL 13.0-p13 with the same config, only occasionally showing the symptoms after multiple vm reboots, and a host reboot solves the problem unlike in 13.1-release 13.2-release and now 14.0-current) Ruling out NIC/board hardware fault and specific NIC driver problems, I've tried with the following NICs: - Intel I350-t4 - Intel 82580 - Broadcom BCM5720 ...in different desktop and server boards (with the latest BIOS): - Asus M5A99X EVO R2.0 - Asus M4A87TD EVO - Asus KGPE-D16 # freebsd-version -kru 14.0-CURRENT 14.0-CURRENT 14.0-CURRENT /boot/loader.conf: vmm_load="YES" nmdm_load="YES" hw.vmm.amdvi.enable=1 pptdevs="8/0/0 8/0/1" # vm passthru|grep ppt0 ppt0 8/0/0 Yes 82580 Gigabit Network Connection the vm config file for vm-bhyve: loader="bhyveload" cpu=2 memory=4G disk0_type="virtio-blk" disk0_name="ptproba.img" # igb0: passthru0="8/0/0" uuid="2333ba09-dfe1-11ed-9ed6-9c5c8e54ad77" vm-bhyve.log: Aug 03 02:25:16: initialising Aug 03 02:25:16: [loader: bhyveload] Aug 03 02:25:16: [cpu: 2] Aug 03 02:25:16: [memory: 4G] Aug 03 02:25:16: [hostbridge: standard] Aug 03 02:25:16: [com ports: com1] Aug 03 02:25:16: [uuid: 2333ba09-dfe1-11ed-9ed6-9c5c8e54ad77] Aug 03 02:25:16: [debug mode: no] Aug 03 02:25:16: [primary disk: ptproba.img] Aug 03 02:25:16: [primary disk dev: file] Aug 03 02:25:16: booting Aug 03 02:25:16: bhyveload -c /dev/nmdm-ptproba.1A -S -m 4G -e autoboot_delay=3 -d /root/vm-bhyve/ptproba/ptproba.img ptproba Aug 03 02:25:22: [bhyve options: -c 2 -m 4G -AHP -U 2333ba09-dfe1-11ed-9ed6-9c5c8e54ad77 -u -S] Aug 03 02:25:22: [bhyve devices: -s 0,hostbridge -s 31,lpc -s 4:0,virtio-blk,/root/vm-bhyve/ptproba/ptproba.img -s 5:0,passthru,8/0/0] Aug 03 02:25:22: [bhyve console: -l com1,/dev/nmdm-ptproba.1A] Aug 03 02:25:22: starting bhyve (run 1) The first few dozen messages are like the followings (couple of hundred lines): ivhd0: EVT INTR 0 Status:0x1a EVT Head:0x0 Tail:0x10] [CMD Total 0x24] Tail:0x240, Head:0x240. ivhd0: [Event0: Head:0x0 Tail:0x10] [INV_DTE devid:0xa0 addr:0xfdf9103300 type:0x3 tr:0] ivhd0: EVT INTR 1 Status:0x1a EVT Head:0x10 Tail:0x20] [CMD Total 0x26] Tail:0x260, Head:0x260. ivhd0: [Event0: Head:0x10 Tail:0x20] [INV_DTE devid:0xa0 addr:0xfdf9103300 type:0x3 tr:0] ivhd0: EVT INTR 2 Status:0x1a EVT Head:0x20 Tail:0x30] [CMD Total 0x26] Tail:0x260, Head:0x260. ivhd0: [Event0: Head:0x20 Tail:0x30] [INV_DTE devid:0xa0 addr:0xfdf9103300 type:0x3 tr:0] ...then the constant flood (about 35 lines per second in /var/log/messages): ivhd0: [Event63: Head:0x3e0 Tail:0x8d0] [INV_DTE devid:0xa0 addr:0xfdf9103300 type:0x3 tr:0] ivhd0: [Event64: Head:0x3f0 Tail:0x8d0] [INV_DTE devid:0xa0 addr:0xfdf9103300 type:0x3 tr:0] ivhd0: [Event65: Head:0x400 Tail:0x8d0] [INV_DTE devid:0xa0 addr:0xfdf9103300 type:0x3 tr:0] Any idea? Best