Re: [Xen-devel] [PATCH v9 1/9] xen/x86: set the vPMU interface based on the presence of a lapic

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 30.11.15 at 21:28, <boris.ostrovsky@xxxxxxxxxx> wrote:
> On 11/27/2015 08:42 AM, Roger Pau Monne wrote:
>> Instead of choosing the interface to expose to guests based on the guest
>> type, do it based on whether the guest has an emulated local apic or not.
>>
>> Signed-off-by: Roger Pau Monnà <roger.pau@xxxxxxxxxx>
>> Signed-off-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
>> Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
>> Cc: Jan Beulich <jbeulich@xxxxxxxx>
>> Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
>> ---
>> Changes since v8:
>>   - Don't add the xenpmu hypercalls to the HVM hypercall table (yet).
> 
> Without having the hypercalls available to HVMlite (?) guests these 
> changes, except possibly those in vmx.c/svm.c, are somewhat pointless 
> since we never reach patched code.
> 
> I understand desire not to increase size of hypercall tables which we 
> want to eventually get rid of but is it really worth doing (or rather 
> not doing) at the cost of not including useful functionality?

Considering that Konrad had designated you as (kind of informal)
PVH maintainer, perhaps this is a good reason for you to actually
do the folding now (and maybe we should record maintainership in
./MAINTAINERS even if there are no specific files to be listed)? In
any event, my ack was made dependent on the HVM hypercall
tables being left alone until folded, and I don't think I want to give
up on that.

Jan

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