Re: bhyve passthru problem

15.06.24 13:47, Mario Marietto:
> Ciao Oleksandr.
>
> I can't produce patches,I'm not a programmer. But I conduct 
> experiments every day,changing parameters,system files between 
> different FreeBSD versions,operating systems and tools.
>
> Can't you use virtio-net instead of passing through the physical 
> network interface,like this for example : -s 13,virtio-net,tap18 \ in 
> your bhyve guest ?
>
> You can try these bhyve versions : (try both)
>
> https://drive.google.com/drive/folders/14OMOjdyS5NPQ75ISatcpCWegU0udzG0r?usp=sharing
>
Unfortunately both of your vmm.ko modules fail to load on my system:

KLD vmm.ko: depends on kernel - not available or version mismatch

> On Sat, Jun 15, 2024 at 9:17 AM Oleksandr Kryvulia 
> <shuriku@shurik.kiev.ua> wrote:
>
>     14.06.24 10:50, Peter Grehan:
>     >> I don't know why bhyve validates the BAR size. The commit
>     adding this
>     >> check is old [1] and doesn't explain it. What bhyve could do is
>     >> rounding up the BAR size to a full page size when allocating
>     memory for
>     >> the BAR.
>     >>
>     >> [1] https://github.com/freebsd/freebsd-
>     >> src/commit/7a902ec0eccc752c9c38533ed123121eaaea1225
>     >
>     >  At the time, BIOSs would often place device BARs of less than a
>     page
>     > size in the same physical page. Since EPT only gives page
>     granularity,
>     > this would result in all those devices being available to the guest
>     > even if they hadn't been passed through.
>     >
>     Peter, can you explain how can I use this device in a guest without
>     passing through?
>
>
>
>
> -- 
> Mario.