Re: [virtio-dev] Re: [virtio-comment] Re: [VIRTIO PCI PATCH v5 1/1] transport-pci: Add freeze_mode to virtio_pci_common_cfg

From: Zhu, Lingshan
Date: Wed Sep 20 2023 - 03:48:37 EST




On 9/20/2023 3:35 PM, Parav Pandit wrote:
From: Zhu, Lingshan <lingshan.zhu@xxxxxxxxx>
Sent: Wednesday, September 20, 2023 1:00 PM

On 9/20/2023 3:24 PM, Chen, Jiqian wrote:
Hi Lingshan,
It seems you reply to the wrong email thread. They are not related to my
patch.
These reply to Parva's comments.
@Parva, if you want to discuss more about live migration, please reply in my
thread, lets don't flood here.
You made the point that "this is not live migration".
I am not discussing live migration in this thread.

I replied for the point that device restoration from suspend for physical and hypevisor based device is not a 40nsec worth of work to restore by just doing a register write.
This is not live or device migration. This is restoring the device context initiated by the driver owning the device.
restore the device context should be done by the hypervisor before setting DRIVER_OK and waking up the guest, not a concern here, out of spec