Re: [PATCH v6 10/13] vpci/header: reset the command register when adding devices

[Oleksandr Andrushchenko]

On 07.02.22 16:31, Jan Beulich wrote:
> On 07.02.2022 15:17, Oleksandr Andrushchenko wrote:
> But: What's still missing here then is the separation of guest and host
> views. When we set INTx behind the guest's back, it shouldn't observe the
> bit set. Or is this meant to be another (big) TODO?
Why not? This seems to be when a guest tries to both enable MSI/MSI-X
and INTx which is a wrong combination. Let's pretend to be a really
smart PCI device which partially rejects such PCI_COMMAND write,
so guest still sees the register consistent wrt INTx bit. Namely it remains
set.
>
> Jan
>
>