From: daniel.lezcano@linaro.org (Daniel Lezcano)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2] clocksource/arm_arch_timer: Enable and verify MMIO access
Date: Mon, 8 Feb 2016 15:30:56 +0100 [thread overview]
Message-ID: <56B8A6A0.4080704@linaro.org> (raw)
In-Reply-To: <71bf617f4083b116b2aeab24f13fc5fed99a816f.1454327031.git.robin.murphy@arm.com>
On 02/01/2016 01:00 PM, Robin Murphy wrote:
> So far, we have been blindly assuming that having access to a
> memory-mapped timer frame implies that the individual elements of that
> frame frame are already enabled. Whilst it's the firmware's job to give
> us non-secure access to frames in the first place, we should not rely
> on implementations always being generous enough to also configure CNTACR
> for those non-secure frames (e.g. [1]).
>
> Explicitly enable feature-level access per-frame, and verify that the
> access we want is really implemented before trying to make use of it.
>
> [1]:https://github.com/ARM-software/tf-issues/issues/170
>
> Signed-off-by: Robin Murphy <robin.murphy@arm.com>
> ---
Applied to my tree for 4.6.
Thanks
- Daniel
prev parent reply other threads:[~2016-02-08 14:30 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-01 12:00 [PATCH v2] clocksource/arm_arch_timer: Enable and verify MMIO access Robin Murphy
2016-02-01 13:44 ` Mark Rutland
2016-02-01 19:58 ` Stephen Boyd
2016-02-05 15:29 ` Robin Murphy
2016-02-05 15:32 ` Daniel Lezcano
2016-02-05 15:34 ` Robin Murphy
2016-02-08 14:00 ` Daniel Lezcano
2016-02-08 14:09 ` Marc Zyngier
2016-02-08 14:30 ` Daniel Lezcano [this message]
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