Messages in this thread | | | Subject | Re: [patch 11/12] hrtimer: Prepare support for PREEMPT_RT | From | Paolo Bonzini <> | Date | Mon, 29 Jul 2019 19:30:33 +0200 |
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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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