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
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