Re: [Xen-devel] [PATCH v2 4/4] xen/x86: Allow stubdom access to irq created for msi.

[Roger Pau Monné <roger.pau@xxxxxxxxxx>]

On Thu, Jan 17, 2019 at 04:52:42AM -0700, Jan Beulich wrote:
> >>> On 17.01.19 at 09:57, <roger.pau@xxxxxxxxxx> wrote:
> > While not against using physdevop if we agree that a new hypercall is
> > the way to go, I would prefer a domctl because this hypercall would
> > only be used by toolstack components, and thus doesn't need to be
> > added to the public stable ABI available to all guests, even if the
> > functionality is actually limited to stubdomains.
> 
> But a new sub-op doesn't need to be part of the stable ABI.
> See how e.g. various of the memory sub-ops are restricted to
> be used by the tool stack, and hence not required to remain
> unchanged.

Oh, then I'm all in for a physdevop limited to stubdomain only usage.

Thanks, Roger.

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