From: Marc Zyngier <marc.zyngier@arm.com>
To: Julien Thierry <julien.thierry@arm.com>
Cc: <linux-kernel@vger.kernel.org>, <tglx@linutronix.de>,
<peterz@infradead.org>, <mingo@kernel.org>
Subject: Re: [PATCH v5 1/4] genirq: Provide basic NMI management for interrupt lines
Date: Mon, 28 Jan 2019 16:25:09 +0000 [thread overview]
Message-ID: <86imy8vjfe.wl-marc.zyngier@arm.com> (raw)
In-Reply-To: <1548689907-17124-2-git-send-email-julien.thierry@arm.com>
On Mon, 28 Jan 2019 15:38:24 +0000,
Julien Thierry <julien.thierry@arm.com> wrote:
>
> Add functionality to allocate interrupt lines that will deliver IRQs
> as Non-Maskable Interrupts. These allocations are only successful if
> the irqchip provides the necessary support and allows NMI delivery for the
> interrupt line.
>
> Interrupt lines allocated for NMI delivery must be enabled/disabled through
> enable_nmi/disable_nmi_nosync to keep their state consistent.
>
> To treat a PERCPU IRQ as NMI, the interrupt must not be shared nor threaded,
> the irqchip directly managing the IRQ must be the root irqchip and the
> irqchip cannot be behind a slow bus.
>
> Signed-off-by: Julien Thierry <julien.thierry@arm.com>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Peter Zijlstra <peterz@infradead.org>
> Cc: Ingo Molnar <mingo@kernel.org>
> Cc: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
M.
--
Jazz is not dead, it just smell funny.
next prev parent reply other threads:[~2019-01-28 16:36 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-28 15:38 [PATCH v5 0/4] Provide core API for NMIs Julien Thierry
2019-01-28 15:38 ` [PATCH v5 1/4] genirq: Provide basic NMI management for interrupt lines Julien Thierry
2019-01-28 16:25 ` Marc Zyngier [this message]
2019-01-28 15:38 ` [PATCH v5 2/4] genirq: Provide NMI management for percpu_devid interrupts Julien Thierry
2019-01-28 16:41 ` Marc Zyngier
2019-01-28 17:27 ` Julien Thierry
2019-01-28 15:38 ` [PATCH v5 3/4] genirq: Provide NMI handlers Julien Thierry
2019-01-28 16:42 ` Marc Zyngier
2019-01-28 15:38 ` [PATCH v5 4/4] irqdesc: Add domain handler for NMIs Julien Thierry
2019-01-28 16:46 ` Marc Zyngier
2019-01-28 16:54 ` [PATCH v5 0/4] Provide core API " Marc Zyngier
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