From: robin.murphy@arm•com (Robin Murphy)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v2] clocksource/arm_arch_timer: Enable and verify MMIO access
Date: Fri, 5 Feb 2016 15:34:54 +0000 [thread overview]
Message-ID: <56B4C11E.1040702@arm.com> (raw)
In-Reply-To: <56B4C072.3040409@linaro.org>
On 05/02/16 15:32, Daniel Lezcano wrote:
> On 02/05/2016 04:29 PM, Robin Murphy wrote:
>> On 01/02/16 19:58, Stephen Boyd wrote:
>>> On 02/01, 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>
>>>> ---
>>>
>>> Reviewed-by: Stephen Boyd <sboyd@codeaurora•org>
>>> Tested-by: Stephen Boyd <sboyd@codeaurora•org>
>>
>> Great, thanks!
>>
>> Daniel, am I right in hoping this is something you'll pick up, or should
>> I be resending it to arm-soc?
>
> I will be reviewing timers patches next week. I will take care of this one.
Cool, thanks for the confirmation.
Robin.
>
> Thanks
> -- Daniel
>
>
>
next prev parent reply other threads:[~2016-02-05 15:34 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 [this message]
2016-02-08 14:00 ` Daniel Lezcano
2016-02-08 14:09 ` Marc Zyngier
2016-02-08 14:30 ` Daniel Lezcano
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