Re: [Xen-devel] [PATCH v2] docs: update HVM emulated unplug protocol to cover NVMe disks

[George Dunlap <george.dunlap@xxxxxxxxxx>]

On 24/03/17 11:00, Paul Durrant wrote:
> Recent discussions on xen-devel have highlighted that to properly
> support displacing emulated NVMe disks with PV equivalents will need
> updates to PV frontends. Therefore it is important that, if an emulated
> NVMe disk is exposed to a guest with an existing PV storage frontend,
> that frontend does not inadvertently cause unplug of that emulated
> disk when unplugging IDE or SCSI disks.
> 
> This patch defines a new bit in the mask used to instruct QEMU to unplug
> emulated devices which will instruct QEMU to unplug NVMe disks and limits
> the semantics of the existing 'all' disk-unplug bit to only IDE and/or SCSI
> disks.
> 
> Signed-off-by: Paul Durrant <paul.durrant@xxxxxxxxxx>

That's a lot better -- thanks!

Acked-by: George Dunlap <george.dunlap@xxxxxxxxxx>



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