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Date:      Mon, 02 Nov 2020 09:10:56 +0000
From:      bugzilla-noreply@freebsd.org
To:        virtualization@FreeBSD.org
Subject:   [Bug 250802] bhyve exited with status 134 when GPU PCI passthrough
Message-ID:  <bug-250802-27103@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D250802

            Bug ID: 250802
           Summary: bhyve exited with status 134 when GPU PCI passthrough
           Product: Base System
           Version: 12.2-STABLE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: bhyve
          Assignee: virtualization@FreeBSD.org
          Reporter: mr.xanto@gmail.com

Try to pass through GPU to a Windows 10 guest.

/boot/loader.conf:
vmm_load=3D"YES"
pptdevs=3D"1/0/0 1/0/1"

# pciconf -lv
ppt0@pci0:1:0:0:        class=3D0x030000 card=3D0x38991642 chip=3D0x0a6310d=
e rev=3D0xa2
hdr=3D0x00
    vendor     =3D 'NVIDIA Corporation'
    device     =3D 'GT218 [GeForce 310]'
    class      =3D display
    subclass   =3D VGA
ppt1@pci0:1:0:1:        class=3D0x040300 card=3D0x38991642 chip=3D0x0be310d=
e rev=3D0xa1
hdr=3D0x00
    vendor     =3D 'NVIDIA Corporation'
    device     =3D 'High Definition Audio Controller'
    class      =3D multimedia
    subclass   =3D HDA

bhyve options:
  [bhyve options: -c 1 -m 3G -Hwl
bootrom,/usr/local/share/uefi-firmware/BHYVE_UEFI.fd -U
00dad61d-0d2e-11eb-936d-70f3951447ea -S]
  [bhyve devices: -s 0,hostbridge -s 31,lpc -s
4:0,ahci,hd:/mnt/Data/vm/win10/disk0.img -s
5:0,virtio-net,tap0,mac=3D58:9c:fc:01:00:a8 -s 6:0,passthru,1/0/0 -s
6:1,passthru,1/0/1 -s 7:0,xhci,tablet]
  [bhyve console: -l com1,stdio]
  [bhyve iso device: -s 3:0,ahci-cd,/mnt/Data/vm/.config/null.iso]

Windows guest see NVidia GPU, try to install driver, and after reboot bhyve
stop working with error:

bhyve exited with status 134
Unhandled ps2 keyboard command 0x02
Unhandled ps2 keyboard command 0x02
Assertion failed: (pi->pi_bar[baridx].type =3D=3D PCIBAR_IO), function
passthru_write, file /usr/src/usr.sbin/bhyve/pci_passthru.c, line 916.

# uname -v
FreeBSD 12.2-STABLE r366667 GENERIC

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