From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Josh Cartwright <joshc@ni.com>
Cc: "Jaggi, Manish" <Manish.Jaggi@caviumnetworks.com>,
linux-rt-users <linux-rt-users@vger.kernel.org>,
Christoffer Dall <christoffer.dall@linaro.org>
Subject: Re: [4.4rt3] Preemption disabled at:[<ffff8000000aba44>] kvm_vcpu_ioctl+0x30c/0x750
Date: Thu, 11 Feb 2016 17:10:25 +0100 [thread overview]
Message-ID: <20160211161025.GB28994@linutronix.de> (raw)
In-Reply-To: <20160210163930.GN9579@jcartwri.amer.corp.natinst.com>
* Josh Cartwright | 2016-02-10 10:39:30 [-0600]:
>If the concern is touching the wrong per-CPU GIC distributor registers,
>it should be sufficient on -rt to downgrade the preempt_disable() /
>preempt_enable() to a migrate_disable() / migrate_enable(), which is
>preemptible, but prevents the task from moving to another CPU.
Thanks Josh. Could you please post a patch with sign-of-by and
everything?
>
> Josh
Sebastian
next prev parent reply other threads:[~2016-02-11 16:10 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-10 9:33 [4.4rt3] Preemption disabled at:[<ffff8000000aba44>] kvm_vcpu_ioctl+0x30c/0x750 Jaggi, Manish
2016-02-10 16:39 ` Josh Cartwright
2016-02-11 10:46 ` Jaggi, Manish
2016-02-11 14:02 ` Christoffer Dall
2016-02-11 16:19 ` Marc Zyngier
2016-02-11 15:28 ` Sebastian Andrzej Siewior
2016-02-11 15:31 ` Jaggi, Manish
2016-02-11 14:01 ` Christoffer Dall
2016-02-11 16:10 ` Sebastian Andrzej Siewior [this message]
2016-02-11 17:54 ` [PATCH -rt 1/2] genirq: update irq_set_irqchip_state documentation Josh Cartwright
2016-02-11 17:54 ` [PATCH -rt 2/2] KVM: arm/arm64: downgrade preempt_disable()d region to migrate_disable() Josh Cartwright
2016-02-12 23:03 ` Sebastian Andrzej Siewior
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