Messages in this thread | | | Date | Thu, 04 Dec 2014 14:53:26 +0100 | From | Paolo Bonzini <> | Subject | Re: [patch -rt 2/2] KVM: lapic: mark LAPIC timer handler as irqsafe |
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On 25/11/2014 21:24, Thomas Gleixner wrote: > On Tue, 25 Nov 2014, Rik van Riel wrote: >> On 11/25/2014 12:21 PM, Marcelo Tosatti wrote: >>> Since lapic timer handler only wakes up a simple waitqueue, >>> it can be executed from hardirq context. >>> >>> Reduces average cyclictest latency by 3us. >> >> Can this patch be merged in the KVM tree, and go >> upstream via Paolo? > > Not really as it has RT dependencies ....
Can hrtimer_start_expires even return ETIME on a non-RT kernel? If yes, I can take patch 2. If not, it's better to keep both patches in the RT tree.
Paolo
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