Re: [Xen-devel] [PATCH RFC V8 0/17] Paravirtualized ticketspinlocks

From: Jan Beulich
Date: Tue May 15 2012 - 07:26:14 EST

>>> On 07.05.12 at 19:25, Ingo Molnar <mingo@xxxxxxxxxx> wrote:

(apologies for the late reply, the mail just now made it to my inbox
via xen-devel)

> I'll hold off on the whole thing - frankly, we don't want this
> kind of Xen-only complexity. If KVM can make use of PLE then Xen
> ought to be able to do it as well.

It does - for fully virtualized guests. For para-virtualized ones,
it can't (as the hardware feature is an extension to VMX/SVM).

> If both Xen and KVM makes good use of it then that's a different
> matter.

I saw in a later reply that you're now tending towards trying it
out at least - thanks.


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