Re: [Xen-devel] [PATCH ARM v8 2/4] mini-os: arm: interrupt controller

[Anil Madhavapeddy <anil@xxxxxxxxxx>]

On 21 Oct 2014, at 17:03, Julien Grall <julien.grall@xxxxxxxxxx> wrote:
> 
>>> In this case, it would make mini-os working directly on Xen 4.4.
> 
>> and how long should mini-os carry this hack for then?
> 
> The current issue could be considered as an hardware bug (even though
> it's an emulation). Time to time guest has to deal with hardware bug. As
> long as it's very simple to fix it and doesn't impact performance, I
> guess it's better to have it forever.
> In this case, interrupts will be configured only once during mini-os
> initialization.
> 
> If nobody care about running mini-os on current version of current Xen
> 4.4.x, then fine.

Isn't this what XEN_INTERFACE_VERSION checks are for?  It's certainly
convenient to have MiniOS support the last stable version of the Xen
ABI unless it's a huge diff, and this should just be a localised #ifdef.

-anil

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