Messages in this thread | | | Date | Mon, 17 Mar 2014 13:47:30 -0400 | From | Waiman Long <> | Subject | Re: [PATCH RFC v6 10/11] pvqspinlock, x86: Enable qspinlock PV support for KVM |
| |
On 03/14/2014 04:42 AM, Paolo Bonzini wrote: > Il 13/03/2014 20:13, Waiman Long ha scritto: >>>> >>> >>> This should also disable the unfair path. >>> >>> Paolo >>> >> >> The unfair lock uses a different jump label and does not require any >> special PV ops. There is a separate init function for that. > > Yeah, what I mean is that the patches that enable paravirtualization > should also take care of decreasing the unfair-lock jump label when > paravirtualization is enabled. > > Paolo
As there are people who don't like unfair lock at all, I prefer to give them the option to turn this on or off instead of forcing them to always use unfair lock in a PV guest.
-Longman
| |