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From: "BillXiang" <xiangwencheng@dayudpu.com>
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 <CAJFAV8wokT1NEWk4LD7nn_ydc9_HbsvkPo3Cn0m7Eq_w7w31BA@mail.gmail.com>
Date: Wed, 10 Jul 2024 15:09:08 +0800
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To: "David Marchand" <david.marchand@redhat.com>
Cc: "Tyler Retzlaff" <roretzla@linux.microsoft.com>, 
 "Anatoly Burakov" <anatoly.burakov@intel.com>, <dev@dpdk.org>
Subject: Re: [PATCH v3] vfio: combine container_create and group_bind
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> From: "David Marchand"<david.marchand@redhat.com>
> Date:=C2=A0 Tue, Jul 9, 2024, 16:49
> Subject:=C2=A0 Re: [PATCH v3] vfio: combine container_create and group_bi=
nd
> To: "BillXiang"<xiangwencheng@dayudpu.com>
> Cc: "Tyler Retzlaff"<roretzla@linux.microsoft.com>, "Anatoly Burakov"<ana=
toly.burakov@intel.com>, <dev@dpdk.org>
> On Thu, Jul 4, 2024 at 9:48=E2=80=AFAM BillXiang <xiangwencheng@dayudpu.c=
om> wrote:
> >
> > From: BillXiang <xiangwencheng@dayudpu.com>
> >
> > For multi-devices in one group we can only create and bind to one
> > container. With this new function, device driver does not need to
> > save the binding info additionally between different devices.
> >
> > Signed-off-by: BillXiang <xiangwencheng@dayudpu.com>
>=C2=A0
> Thanks for the patch (don't forget to register to the dev@ mailing
> list when submitting patches).
>=C2=A0
> Could you please describe which driver benefits from it?
>=C2=A0
>=C2=A0
> --=C2=A0
> David Marchand

Thanks for your replay. I have registered now.

This patch addresses the issue for PCIe devices that have multiple PFs with=
in=C2=A0
the same IOMMU group, a situation arising from the absence of ACS support.
If we want to use these PFs in vDPA, we have to know if the group has been=
=C2=A0
bound to a container by other PF upon each probe.