Thread (37 messages) 37 messages, 6 authors, 2015-04-27

Re: [PATCH 0/2] powerpc/kvm: Enable running guests on RT Linux

From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: 2015-02-25 16:37:04
Also in: linux-rt-users, lkml

* Scott Wood | 2015-02-23 17:27:31 [-0600]:
This isn't a host PIC driver.  It's guest PIC emulation, some of which
is indeed not suitable for a rawlock (in particular, openpic_update_irq
which loops on the number of vcpus, with a loop body that calls
IRQ_check() which loops over all pending IRQs).  The vcpu limits are a
temporary bandaid to avoid the worst latencies, but I'm still skeptical
about this being upstream material.
Okay.
-Scott
Sebastian
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