Re: [PATCH 2/4, v2] x86: enlightenment for ticket spin locks - Xen implementation

Jan Beulich
2010-07-01T07:56:58Z

>>> On 30.06.10 at 17:57, Stefano Stabellini <stefano.stabellini@eu.citrix.com>
wrote:
> On Wed, 30 Jun 2010, Jeremy Fitzhardinge wrote:
>> On 06/29/2010 04:32 PM, Jan Beulich wrote:
>> > Use the (alternative instructions based) callout hooks to the ticket
>> > spinlock code to enlighten ticket locks when running fully virtualized
>> > on Xen. Ultimately, this code might also be a candidate to be used
>> > when running para-virtualized.
>> >
>>
>> I'm not sure what the gain is by making this independent of all the rest
>> of the Xen support in the kernel. Stefano is working on a series
>> (posted a few times now) to add more paravirtual features for Xen HVM
>> guests, and this work is conceptually very similar.
>
> My series has been stable since a while now and contains all the basic
> PV on HVM mechanisms you need, including parsing the cpuid and mapping
> the shared info page.
>
> Could you please rebase on my series (or at least the first two
> patches), so that we don't conflict with each other?

I really don't want to make those patches depend on no upstream
stuff (as I want it accepted upstream), and I'm not sure when your
patch series is expected to be upstream. If that's going to be soon,
I'd just re-base after it happened.

Jan