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SubjectRe: [patch 11/12] hrtimer: Prepare support for PREEMPT_RT
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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

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