Re: [Xen-devel] [PATCH RFC v2 4/4] xen/MSI: re-expose masking capability

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

On Mon, 14 Dec 2015, Jan Beulich wrote:
> >>> On 11.12.15 at 17:56, <ian.campbell@xxxxxxxxxx> wrote:
> > For the original issue here, could the flag be exposed as a
> > XEN_SYSCTL_PHYSCAP_????
> 
> Yes, I think it could, albeit calling this a "capability" or "feature"
> seems odd (since really the original behavior was bogus/buggy).
> But - with sysctl not being a stable interface, is making qemu use
> this actually a good idea? I.e. won't we paint ourselves into the
> corner of needing to write compatibility wrappers in qemu
> whenever XEN_SYSCTL_physinfo (or its libxc wrapper) changes?

Even though it might increase the number of compatibility wrappers that
we need today, I think that Ian will be able to eventually switch it
over to a stable interface?

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