linux-kernel - RE: [PATCH v2 4/7] Drivers: hv: vmbus: Suspend/resume the synic for hibernation

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Message-ID: <DM5PR21MB0137C86DA324FF19E88244A1D7D40@DM5PR21MB0137.namprd21.prod.outlook.com>
Date:   Wed, 7 Aug 2019 15:21:21 +0000
From:   Michael Kelley <mikelley@...rosoft.com>
To:     Dexuan Cui <decui@...rosoft.com>,
        "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        Sasha Levin <Alexander.Levin@...rosoft.com>,
        "sashal@...nel.org" <sashal@...nel.org>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        KY Srinivasan <kys@...rosoft.com>,
        "tglx@...utronix.de" <tglx@...utronix.de>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v2 4/7] Drivers: hv: vmbus: Suspend/resume the synic for
 hibernation

From: Dexuan Cui <decui@...rosoft.com> Sent: Wednesday, July 31, 2019 10:52 AM
> 
> This is needed when we resume the old kernel from the "current" kernel.
> 
> Note: when hv_synic_suspend() and hv_synic_resume() run, all the
> non-boot CPUs have been offlined, and interrupts are disabled on CPU0.
> 
> Signed-off-by: Dexuan Cui <decui@...rosoft.com>
> ---
>  drivers/hv/vmbus_drv.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 46 insertions(+)
> 

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