[Date Prev] | [Thread Prev] | [Thread Next] | [Date Next] -- [Date Index] | [Thread Index] | [List Home]
Subject: Re: [virtio-dev] Re: [PATCH 0/5] virtio: introduce SUSPEND bit and vq state
On 9/19/2023 2:49 AM, Michael S. Tsirkin wrote:
On Mon, Sep 18, 2023 at 06:41:55PM +0000, Parav Pandit wrote:Please refer to the code for setting FEATURES_OK.It wont work when one needs to suspend the device. There is no point of doing such work over registers as fundamental framework is over the AQ.Well not really. It's over admin commands. When these were built the intent always was that it's possible to use admin commands through another interface, other than admin queue. Is there a problem implementing admin commands over a memory BAR? For example, I can see an "admin command" capability pointing at a BAR where commands are supplied, and using a new group type referring to device itself.
I am not sure, if a bar cap would be implemented as a proxy for the admin vqbased live migration. then the problems of admin vq LM that we have discussed
still exist. the bar is only a proxy, doesn't fix anything. and even larger side channel attacking surface: vf-->pf-->vf
[Date Prev] | [Thread Prev] | [Thread Next] | [Date Next] -- [Date Index] | [Thread Index] | [List Home]