Re: [PATCH v3] Drivers: hv: vmbus: Fix Suspend-to-Idle for Generation-2 VM

[Wei Liu]

On Sat, Apr 11, 2020 at 08:50:35PM -0700, Dexuan Cui wrote:
> Before the hibernation patchset (e.g. f53335e3289f), in a Generation-2
> Linux VM on Hyper-V, the user can run "echo freeze > /sys/power/state" to
> freeze the system, i.e. Suspend-to-Idle. The user can press the keyboard
> or move the mouse to wake up the VM.
> 
> With the hibernation patchset, Linux VM on Hyper-V can hibernate to disk,
> but Suspend-to-Idle is broken: when the synthetic keyboard/mouse are
> suspended, there is no way to wake up the VM.
> 
> Fix the issue by not suspending and resuming the vmbus devices upon
> Suspend-to-Idle.
> 
> Fixes: f53335e3289f ("Drivers: hv: vmbus: Suspend/resume the vmbus itself for hibernation")
> Cc: stable@xxxxxxxxxxxxxxx
> Reviewed-by: Michael Kelley <mikelley@xxxxxxxxxxxxx>
> Signed-off-by: Dexuan Cui <decui@xxxxxxxxxxxxx>

Applied to hyperv-fixes. Thanks.

Wei.