From: Jason Wang <jasowang@redhat.com>
To: John Fastabend <john.fastabend@gmail.com>, mst@redhat.com
Cc: john.r.fastabend@intel.com, netdev@vger.kernel.org,
alexei.starovoitov@gmail.com, daniel@iogearbox.net
Subject: Re: [net PATCH v4 5/6] virtio: add pci_down/pci_up configuration
Date: Mon, 16 Jan 2017 11:57:24 +0800 [thread overview]
Message-ID: <8844bce3-74bc-fca3-a87b-6736fc62fe62@redhat.com> (raw)
In-Reply-To: <20170116000119.28980.89712.stgit@john-Precision-Tower-5810>
On 2017年01月16日 08:01, John Fastabend wrote:
> In virtio_net we need to do a full reset of the device to support
> queue reconfiguration and also we can trigger this via ethtool
> commands. So instead of open coding this in net driver push this
> into generic code in virtio. This also avoid exporting a handful
> of internal virtio routines.
Looks like this is not a pci specific stuffs. And there's some driver
left (e.g scsi and block).
In fact, I'm not sure touching other drivers is really needed. Maybe we
can just:
- move virtio_device_freeze(), virtio_device_restore() and
.freeze/.restore in virtio_driver out of CONFIG_PM_SLEEP
- move virtnet_freeze() and virtnet_restore() out of CONFIG_PM_SLEEP
- introduce virtio_net_reset() and call
virtio_device_freeze()/virtio_device_restore() there
Another possible issue for sleep/hibernation is xdp_prog were not
restored, if this is not XDP intended, we'd better fix this.
Thanks
[...]
next prev parent reply other threads:[~2017-01-16 3:57 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-15 23:59 [net PATCH v4 0/6] virtio_net XDP fixes and adjust_header support John Fastabend
2017-01-15 23:59 ` [net PATCH v4 1/6] virtio_net: use dev_kfree_skb for small buffer XDP receive John Fastabend
2017-01-15 23:59 ` [net PATCH v4 2/6] virtio_net: wrap rtnl_lock in test for calling with lock already held John Fastabend
2017-01-17 16:57 ` David Miller
2017-01-17 19:03 ` John Fastabend
2017-01-16 0:00 ` [net PATCH v4 3/6] virtio_net: factor out xdp handler for readability John Fastabend
2017-01-16 0:00 ` [net PATCH v4 4/6] virtio_net: remove duplicate queue pair binding in XDP John Fastabend
2017-01-16 0:01 ` [net PATCH v4 5/6] virtio: add pci_down/pci_up configuration John Fastabend
2017-01-16 3:57 ` Jason Wang [this message]
2017-01-16 4:04 ` John Fastabend
2017-01-17 18:45 ` John Fastabend
2017-01-16 0:01 ` [net PATCH v4 6/6] virtio_net: XDP support for adjust_head John Fastabend
2017-01-16 5:48 ` Jason Wang
2017-01-16 5:51 ` [net PATCH v4 0/6] virtio_net XDP fixes and adjust_header support Jason Wang
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