Re: [PATCH v3 0/4] implement vcpu preempted check

From: Peter Zijlstra
Date: Thu Sep 29 2016 - 06:11:03 EST

On Thu, Jul 21, 2016 at 07:45:10AM -0400, Pan Xinhui wrote:
> change from v2:
> no code change, fix typos, update some comments
> change from v1:
> a simplier definition of default vcpu_is_preempted
> skip mahcine type check on ppc, and add config. remove dedicated macro.
> add one patch to drop overload of rwsem_spin_on_owner and mutex_spin_on_owner.
> add more comments
> thanks boqun and Peter's suggestion.
> This patch set aims to fix lock holder preemption issues.

So I really like the concept, but I would also really like to see
support for more hypervisors included before we can move forward with

Please consider s390 and (x86/arm) KVM. Once we have a few, more can
follow later, but I think its important to not only have PPC support for