From: Wei Liu <wei.liu@kernel.org>
To: Dexuan Cui <decui@microsoft.com>
Cc: kys@microsoft.com, haiyangz@microsoft.com,
sthemmin@microsoft.com, wei.liu@kernel.org,
linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org,
mikelley@microsoft.com, vkuznets@redhat.com,
stable@vger.kernel.org
Subject: Re: [PATCH v3] Drivers: hv: vmbus: Fix Suspend-to-Idle for Generation-2 VM
Date: Tue, 14 Apr 2020 21:18:37 +0100 [thread overview]
Message-ID: <20200414201837.yvmrz5nl5gxgjmqt@debian> (raw)
In-Reply-To: <1586663435-36243-1-git-send-email-decui@microsoft.com>
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@vger.kernel.org
> Reviewed-by: Michael Kelley <mikelley@microsoft.com>
> Signed-off-by: Dexuan Cui <decui@microsoft.com>
Applied to hyperv-fixes. Thanks.
Wei.
prev parent reply other threads:[~2020-04-14 20:18 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-12 3:50 [PATCH v3] Drivers: hv: vmbus: Fix Suspend-to-Idle for Generation-2 VM Dexuan Cui
2020-04-14 20:18 ` Wei Liu [this message]
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