linux-kernel - Re: [PATCH v3] Drivers: hv: vm_bus: Handle vmbus rescind calls after vmbus is suspended

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Date:   Mon, 11 Jul 2022 18:54:07 +0000
From:   Wei Liu <wei.liu@...nel.org>
To:     "Michael Kelley (LINUX)" <mikelley@...rosoft.com>
Cc:     Shradha Gupta <shradhagupta@...ux.microsoft.com>,
        "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        KY Srinivasan <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        Wei Liu <wei.liu@...nel.org>, Dexuan Cui <decui@...rosoft.com>,
        Shradha Gupta <shradhagupta@...rosoft.com>,
        Praveen Kumar <kumarpraveen@...rosoft.com>
Subject: Re: [PATCH v3] Drivers: hv: vm_bus: Handle vmbus rescind calls after
 vmbus is suspended

On Mon, Jul 11, 2022 at 05:50:43PM +0000, Michael Kelley (LINUX) wrote:
> From: Shradha Gupta <shradhagupta@...ux.microsoft.com> Sent: Sunday, July 10, 2022 9:12 PM
> > 
> > Add a flag to indicate that the vmbus is suspended so we should ignore
> > any offer message. Add a new work_queue for rescind msg, so we could drain
> > it along with other offer work_queues upon suspension.
> > It was observed that in some hibernation related scenario testing, after
> > vmbus_bus_suspend() we get rescind offer message for the vmbus. This would
> > lead to processing of a rescind message for a channel that has already been
> > suspended.
> > 
> > Signed-off-by: Shradha Gupta <shradhagupta@...ux.microsoft.com>
[...]
> 
> Reviewed-by: Michael Kelley <mikelley@...rosoft.com>
> 

Applied to hyperv-next. Thanks.