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
Date: Wed, 4 Sep 2019 16:45:17 +0000 [thread overview]
Message-ID: <DM5PR21MB0137435EDD570C34C72F0FC3D7B80@DM5PR21MB0137.namprd21.prod.outlook.com> (raw)
In-Reply-To: <1567470139-119355-13-git-send-email-decui@microsoft.com>
From: Dexuan Cui <decui@microsoft.com> Sent: Monday, September 2, 2019 5:23 PM
>
> 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.
>
> 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.
>
> 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(-)
>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
prev parent reply other threads:[~2019-09-04 16:45 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-03 0:23 [PATCH v4 00/12] Enhance the hv_vmbus driver to support hibernation Dexuan Cui
2019-09-03 0:23 ` [PATCH v4 01/12] x86/hyper-v: Suspend/resume the hypercall page for hibernation Dexuan Cui
2019-09-05 15:44 ` Sasha Levin
2019-09-05 19:59 ` Dexuan Cui
2019-09-03 0:23 ` [PATCH v4 02/12] x86/hyper-v: Implement hv_is_hibernation_supported() Dexuan Cui
2019-09-04 16:43 ` Michael Kelley
2019-09-03 0:23 ` [PATCH v4 03/12] clocksource/drivers: Suspend/resume Hyper-V clocksource for hibernation Dexuan Cui
2019-09-03 0:23 ` [PATCH v4 04/12] Drivers: hv: vmbus: Break out synic enable and disable operations Dexuan Cui
2019-09-03 0:23 ` [PATCH v4 05/12] Drivers: hv: vmbus: Suspend/resume the synic for hibernation Dexuan Cui
2019-09-03 0:23 ` [PATCH v4 06/12] Drivers: hv: vmbus: Add a helper function is_sub_channel() Dexuan Cui
2019-09-03 0:23 ` [PATCH v4 07/12] Drivers: hv: vmbus: Implement suspend/resume for VSC drivers for hibernation Dexuan Cui
2019-09-03 0:23 ` [PATCH v4 08/12] Drivers: hv: vmbus: Ignore the offers when resuming from hibernation Dexuan Cui
2019-09-04 16:43 ` Michael Kelley
2019-09-03 0:23 ` [PATCH v4 09/12] Drivers: hv: vmbus: Suspend/resume the vmbus itself for hibernation Dexuan Cui
2019-09-03 0:23 ` [PATCH v4 10/12] Drivers: hv: vmbus: Clean up hv_sock channels by force upon suspend Dexuan Cui
2019-09-03 0:23 ` [PATCH v4 11/12] Drivers: hv: vmbus: Suspend after cleaning up hv_sock and sub channels Dexuan Cui
2019-09-04 16:44 ` Michael Kelley
2019-09-03 0:23 ` [PATCH v4 12/12] Drivers: hv: vmbus: Resume after fixing up old primary channels Dexuan Cui
2019-09-04 16:45 ` Michael Kelley [this message]
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