Re: [PATCH v3 0/4] implement vcpu preempted check
From: Peter Zijlstra <peterz@infradead.org>
Date: 2016-09-29 10:11:00
Also in:
kvm, linux-s390, lkml, virtualization
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 this. 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 this.