Re: [PATCH] x86: Expose hypervisor's PVH support via xen_caps

[Andrew Cooper <andrew.cooper3@citrix.com>]

On 23/05/14 16:08, Boris Ostrovsky wrote:
> On 05/23/2014 11:00 AM, Andrew Cooper wrote:
>> On 23/05/14 15:55, Boris Ostrovsky wrote:
>>> Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
>>> ---
>>>   xen/arch/x86/setup.c | 5 +++++
>>>   1 file changed, 5 insertions(+)
>> If the plan is to try and PVH and HVM back into one mode as far as Xen
>> is concerned, doesn't this become redundant?
>
> Yes, I was thinking about this but we currently don't have (or,
> rather, I can't think of) a good way to determine whether we can start
> a PVH guest. We can grep the log but that doesn't feel like a
> particularly good solution.
>
> One option could be to postpone this patch until 4.5 freezes and see
> whether we indeed followed up on the plan and if we didn't then
> integrate it.
>
> -boris

My concern here is that if this patch gets accepted, it will have to say
forever more as the cap strings are a very public API.

~Andrew