Windows 10 guests fail to boot when attempting to passthrough network card

[Rodney W. Grimes]

[ Charset UTF-8 unsupported, converting... ]
> On 5/21/19 9:48 AM, Rodney W. Grimes wrote:
> >> On 5/19/19 6:24 AM, Rodney W. Grimes wrote:
> >>>> Does the card have multiple BARs? Can you send us the output of pciconf -lvb for the card?
> >>>>
> >>>> There is a bug in bhyve where if the OS assigns the 0xffffffff sentinel to more than one BAR simultaneously it is not compatible with bhyve?s memory model for the guest.
> >>>
> >>> The "we talked" below is myself and Nick talking about exactly that
> >>> which came from jhb@ pointing out to me in a hall wall
> >>> conversation here at BSDCan that this is the cause of this
> >>> problem and is a known issue.
> >>>
> >>> Does anyone have fixes for this issue?
> >>
> >> I have not tested this at all, but I have a candidate patch to fix the root
> >> issue at https://github.com/freebsd/freebsd/compare/master...bsdjhb:bhyve_passthrough_barsize
> > 
> > Could you please factor out the white space changes and do that
> > seperately and sooner, it clouds the S/N in this review a bit.
> 
> I can pull those out, but this is just a testing patch still, not yet a commit
> candidate.

Thanks and even more reason to pull those out, IMHO

> -- 
> John Baldwin
-- 
Rod Grimes                                                 rgrimes at freebsd.org