Re: [Xen-devel] (v2) Design proposal for RMRR fix

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 13.01.15 at 17:00, <george.dunlap@xxxxxxxxxxxxx> wrote:
> Another option I was thinking about: Before assigning a device to a
> guest, you have to unplug the device and assign it to pci-back (e.g.,
> with xl pci-assignable-add).  In addition to something like rmmr=host,
> we could add rmrr=assignable, which would add all of the RMRRs of all
> devices currently listed as "assignable".  The idea would then be that
> you first make all your devices assignable, then just start your guests,
> and everything you've made assignable will be able to be assigned.

Nice idea indeed, but I'm not sure about its practicability: It may
not be desirable to make all devices eventually to be handed to a
guest prior to starting any of the guests it may get handed to. In
particular there may be reasons why the host needs the device
while (or until after) creating the guests.

Jan


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