[Bug 258007] FreeBSD and Linux guest os emulated with bhyve can't pass thru any of my NVIDIA graphic cards : the vm freezes before to starting the boot of the disk.

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=258007

--- Comment #10 from mario felicioni <marietto2008@gmail.com> ---
[drm] Unable to create a private tmpfs mount, hugepage support will be
disabled(-19).
Failed to add WC MTRR for [0x40000000-0x5fffffff]: -22; performance may suffer
[drm] Got stolen memory base 0x0, size 0x0
[drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[drm] Driver supports precise vblank timestamp query.
[drm] Connector eDP-1: get mode from tunables:
[drm]   - kern.vt.fb.modes.eDP-1
[drm]   - kern.vt.fb.default_mode
drmn1: successfully loaded firmware image 'i915/kbl_dmc_ver1_04.bin'
[drm] Finished loading DMC firmware i915/kbl_dmc_ver1_04.bin (v1.4)
[drm] failed to retrieve link info, disabling eDP
[drm] Connector HDMI-A-1: get mode from tunables:
[drm]   - kern.vt.fb.modes.HDMI-A-1
[drm]   - kern.vt.fb.default_mode
drmn1: Failed to program MOCS registers; expect performance issues.
sysctl_warn_reuse: can't re-use a leaf (hw.dri.debug)!
[drm] Initialized i915 1.6.0 20190822 for drmn1 on minor 0
WARNING: Device "fb" is Giant locked and may be deleted before FreeBSD 14.0.
VT: Replacing driver "efifb" with new "fb".
start FB_INFO:
type=11 height=1080 width=1920 depth=32
cmsize=16 size=8294400
pbase=0x40040000 vbase=0xfffff80040040000
name=drmn1 flags=0x0 stride=7680 bpp=32
cmap[0]=0 cmap[1]=7f0000 cmap[2]=7f00 cmap[3]=c4a000
end FB_INFO
drmn1: fb0: i915drmfb frame buffer device
WARNING: /mnt/da1p1 was not properly dismounted
tap0: link state changed to UP
pid 1841 (bhyve), jid 0, uid 0: exited on signal 6
tap0: link state changed to DOWN

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