[Bug 270966] PCI passthru stops working after ~30 guest reboots (ivhd, ILLEGAL CMD, IO_PAGE_FAULT)

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=270966

--- Comment #18 from Raúl <raul.munoz@custos.es> ---
(In reply to Santiago Martinez from comment #16)

Hi Santiago,

never thought it can be processor related, I've seen this problem on a 3700x.
Two hundred successful reboots? looks like too much without problems.
I'll try on a 'AMD Ryzen 9 5950X 16-Core Processor'.

About strange behavior after reboot, on that 3700x, changing lots of times
sleeping time between pooling on a Mellanox mlx5 VF from a linux guest (ubuntu
22.04 with nvidia ofed driver, dpdk 23.03), the adapter stop working after a
bhyve host reboot. That reboot was not related to that interface, was working
fine. After reboot, no errors at all, neither on PF or VF, but no ping
anywhere. Rebooting again didn't solve it, reset button did. Something happened
that needed 'hardware' reset. Nics nowadays are too smart and alive XD. Maybe
something more to consider on this problem?.

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