From: Marc Zyngier <marc.zyngier@arm.com>
To: Christopher Covington <cov@codeaurora.org>
Cc: "linux-arm-kernel\@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-kernel\@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Mark Rutland <Mark.Rutland@arm.com>,
Barry Song <baohua@kernel.org>, Kevin Hilman <khilman@linaro.org>,
Russell King <linux@arm.linux.org.uk>,
Jason Cooper <jason@lakedaemon.net>,
Alexander Shiyan <shc_work@mail.ru>,
Larry Bassel <larry.bassel@linaro.org>,
Catalin Marinas <Catalin.Marinas@arm.com>,
Daniel Lezcano <daniel.lezcano@linaro.org>,
Will Deacon <Will.Deacon@arm.com>,
Lorenzo Pieralisi <Lorenzo.Pieralisi@arm.com>,
Sudeep Holla <Sudeep.Holla@arm.com>,
Thomas Gleixner <tglx@linutronix.de>,
Maxime Ripard <maxime.ripard@free-electrons.com>
Subject: Re: [PATCH 00/15] arm/arm64: fix use of irq_find_mapping outside of legal RCU context
Date: Tue, 29 Jul 2014 15:28:25 +0100 [thread overview]
Message-ID: <87mwbskzna.fsf@approximate.cambridge.arm.com> (raw)
In-Reply-To: <53C04B3E.20908@codeaurora.org> (Christopher Covington's message of "Fri, 11 Jul 2014 21:38:22 +0100")
On Fri, Jul 11 2014 at 9:38:22 pm BST, Christopher Covington <cov@codeaurora.org> wrote:
> Hi Mark,
>
> On 07/08/2014 09:10 AM, Marc Zyngier wrote:
>> A number of irqchip drivers are directly calling irq_find_mapping,
>> which may use a rcu_read_lock call when walking the radix tree.
>
> If this happens to be easy for you to determine: do direct callers of
> irq_find_host such as irq_create_of_mapping have a similar problem with
> irq_domain_mutex?
Definitely not from this problem. irq_find_host doesn't use RCU at all,
so it shouldn't be an issue.
Thanks,
M.
--
Jazz is not dead. It just smells funny.
prev parent reply other threads:[~2014-07-29 14:28 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-08 13:10 [PATCH 00/15] arm/arm64: fix use of irq_find_mapping outside of legal RCU context Marc Zyngier
2014-07-08 13:10 ` [PATCH 01/15] arm64: pass IRQ domain to the core IRQ handler Marc Zyngier
2014-07-08 13:10 ` [PATCH 02/15] ARM: " Marc Zyngier
2014-08-02 7:51 ` Russell King - ARM Linux
2014-08-04 10:00 ` Marc Zyngier
2014-07-08 13:10 ` [PATCH 03/15] irqchip: GIC: convert to handle_domain_irq Marc Zyngier
2014-07-08 13:10 ` [PATCH 04/15] irqchip: armada-370-xp: " Marc Zyngier
2014-07-08 13:10 ` [PATCH 05/15] irqchip: clps711x: " Marc Zyngier
2014-07-08 13:10 ` [PATCH 06/15] irqchip: mmp: " Marc Zyngier
2014-07-08 13:10 ` [PATCH 07/15] irqchip: mxs: " Marc Zyngier
2014-07-08 13:10 ` [PATCH 08/15] irqchip: orion: " Marc Zyngier
2014-07-08 13:10 ` [PATCH 09/15] irqchip: s3c24xx: " Marc Zyngier
2014-07-08 13:10 ` [PATCH 10/15] irqchip: sirfsoc: " Marc Zyngier
2014-07-08 13:10 ` [PATCH 11/15] irqchip: sun4i: " Marc Zyngier
2014-07-15 9:18 ` Antoine Ténart
2014-07-08 13:10 ` [PATCH 12/15] irqchip: versatile-fpga: " Marc Zyngier
2014-07-08 13:10 ` [PATCH 13/15] irqchip: vic: " Marc Zyngier
2014-07-08 13:10 ` [PATCH 14/15] irqchip: vt8500: " Marc Zyngier
2014-07-08 13:10 ` [PATCH 15/15] irqchip: zevio: " Marc Zyngier
2014-07-11 20:38 ` [PATCH 00/15] arm/arm64: fix use of irq_find_mapping outside of legal RCU context Christopher Covington
2014-07-29 14:28 ` Marc Zyngier [this message]
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