Solved Trying to understand why only some kind of vmm.ko module allows to passthru my nvidia GPU to a WIndows 11 vm

I want to add a further element to this discussion. The last time that I have recompiled the world and the kernel I missed the string inside the file x86.c and now I'm getting this error from the Linux and the FreeBSD vms :

Code: 
[   35.340539] NVRM: GPU 0000:00:08.0: RmInitAdapter failed! (0x25:0x65:1589)
[   35.340783] NVRM: GPU 0000:00:08.0: rm_init_adapter failed, device minor number 0

On the FreeBSD vm I'm using : /usr/sbin/./bhyve-win
On the Ubuntu vm I'm using : /usr/sbin/./bhyve-lin

The error is the same for both the Os. I suspect that the missing string is the cause.
I will try to recompile vmm.ko with the string to have the certainty.
 
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