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From:   Michael Kelley <mikelley@microsoft.com>
To:     Dexuan Cui <decui@microsoft.com>,
        "linux-hyperv@vger.kernel.org" <linux-hyperv@vger.kernel.org>,
        "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
        Stephen Hemminger <sthemmin@microsoft.com>,
        Sasha Levin <Alexander.Levin@microsoft.com>,
        "sashal@kernel.org" <sashal@kernel.org>,
        Haiyang Zhang <haiyangz@microsoft.com>,
        KY Srinivasan <kys@microsoft.com>,
        "tglx@linutronix.de" <tglx@linutronix.de>
CC:     "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: RE: [PATCH v4 12/12] Drivers: hv: vmbus: Resume after fixing up old
 primary channels
Thread-Topic: [PATCH v4 12/12] Drivers: hv: vmbus: Resume after fixing up old
 primary channels
Thread-Index: AQHVYe3OX2xdqssLhU64Vvbm5PnvIacbvDcg
Date:   Wed, 4 Sep 2019 16:45:17 +0000
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From: Dexuan Cui <decui@microsoft.com> Sent: Monday, September 2, 2019 5:23=
 PM
>=20
> When the host re-offers the primary channels upon resume, the host only
> guarantees the Instance GUID  doesn't change, so vmbus_bus_suspend()
> should invalidate channel->offermsg.child_relid and figure out the
> number of primary channels that need to be fixed up upon resume.
>=20
> Upon resume, vmbus_onoffer() finds the old channel structs, and maps
> the new offers to the old channels, and fixes up the old structs,
> and finally the resume callbacks of the VSC drivers will re-open
> the channels.
>=20
> Signed-off-by: Dexuan Cui <decui@microsoft.com>
> ---
>  drivers/hv/channel_mgmt.c | 85 ++++++++++++++++++++++++++++++++++++-----=
------
>  drivers/hv/connection.c   |  2 ++
>  drivers/hv/hyperv_vmbus.h | 14 ++++++++
>  drivers/hv/vmbus_drv.c    | 17 ++++++++++
>  include/linux/hyperv.h    |  3 ++
>  5 files changed, 101 insertions(+), 20 deletions(-)
>=20

Reviewed-by: Michael Kelley <mikelley@microsoft.com>