Date: Wed, 25 Feb 2015 17:36:49 +0100
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Scott Wood <scottwood@freescale.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>, Alexander Graf <agraf@suse.de>,
        Bogdan Purcareata <bogdan.purcareata@freescale.com>,
        linuxppc-dev@lists.ozlabs.org, linux-rt-users@vger.kernel.org,
        linux-kernel@vger.kernel.org, mihai.caraman@freescale.com,
        Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH 0/2] powerpc/kvm: Enable running guests on RT Linux
Message-ID: <20150225163649.GD6823@linutronix.de>
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 <54E740E7.5090806@redhat.com>
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* 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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