Re: [PATCH] PCI: hv: Detect and fix Hyper-V PCI domain number collision

[Sasha Levin]

On Fri, Aug 02, 2019 at 06:52:56PM +0000, Haiyang Zhang wrote:
> Due to Azure host agent settings, the device instance ID's bytes 8 and 9
> are no longer unique. This causes some of the PCI devices not showing up
> in VMs with multiple passthrough devices, such as GPUs. So, as recommended
> by Azure host team, we now use the bytes 4 and 5 which usually provide
> unique numbers.
>
> In the rare cases of collision, we will detect and find another number
> that is not in use.
> Thanks to Michael Kelley <mikelley@xxxxxxxxxxxxx> for proposing this idea.
>
> Signed-off-by: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>

Acked-by: Sasha Levin <sashal@xxxxxxxxxx>

Bjorn, will you take it through the PCI tree or do you want me to take
it through hyper-v?

--
Thanks,
Sasha