From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Subject: Re: [PATCH -rt 2/2] KVM: arm/arm64: downgrade preempt_disable()d
 region to migrate_disable()
Date: Sat, 13 Feb 2016 00:03:19 +0100
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Cc: "Jaggi, Manish" <Manish.Jaggi@caviumnetworks.com>,
	linux-rt-users <linux-rt-users@vger.kernel.org>,
	Christoffer Dall <christoffer.dall@linaro.org>
To: Josh Cartwright <joshc@ni.com>
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* Josh Cartwright | 2016-02-11 11:54:01 [-0600]:

>kvm_arch_vcpu_ioctl_run() disables the use of preemption when updating
>the vgic and timer states to prevent the calling task from migrating to
>another CPU.  It does so to prevent the task from writing to the
>incorrect per-CPU GIC distributor registers.
>
>On -rt kernels, it's possible to maintain the same guarantee with the
>use of migrate_{disable,enable}(), with the added benefit that the
>migrate-disabled region is preemptible.  Update
>kvm_arch_vcpu_ioctl_run() to do so.
>
>Cc: Christoffer Dall <christoffer.dall@linaro.org>
>Reported-by: Manish Jaggi <Manish.Jaggi@caviumnetworks.com>
>Signed-off-by: Josh Cartwright <joshc@ni.com>

Thanks, applied.

Sebastian