lkml.org 
[lkml]   [2019]   [Jul]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [patch 11/12] hrtimer: Prepare support for PREEMPT_RT
From
Date
On 29/07/19 17:08, Steven Rostedt wrote:
> On Sun, 28 Jul 2019 11:06:50 +0200
> Juergen Gross <jgross@suse.com> wrote:
>
>> In case we'd want to change that I'd rather not special case timers, but
>> apply a more general solution to the quite large amount of similar
>> cases: I assume the majority of cpu_relax() uses are affected, so adding
>> a paravirt op cpu_relax() might be appropriate.
>>
>> That could be put under CONFIG_PARAVIRT_SPINLOCK. If called in a guest
>> it could ask the hypervisor to give up the physical cpu voluntarily
>> (in Xen this would be a "yield" hypercall).
>
> Seems paravirt wants our cpu_chill() ;-)

Actually that is not really a joke! :)

Paolo

\
 
 \ /
  Last update: 2019-07-29 19:33    [W:0.078 / U:0.008 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site