From: Robin Murphy <robin.murphy@arm.com> To: Daniel Lezcano <daniel.lezcano@linaro.org>, Stephen Boyd <sboyd@codeaurora.org> Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, tglx@linutronix.de, mark.rutland@arm.com Subject: Re: [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 > > >
WARNING: multiple messages have this Message-ID (diff)
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 15:35 UTC|newest] Thread overview: 18+ 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 12:00 ` Robin Murphy 2016-02-01 13:44 ` Mark Rutland 2016-02-01 13:44 ` Mark Rutland 2016-02-01 19:58 ` Stephen Boyd 2016-02-01 19:58 ` Stephen Boyd 2016-02-05 15:29 ` Robin Murphy 2016-02-05 15:29 ` Robin Murphy 2016-02-05 15:32 ` Daniel Lezcano 2016-02-05 15:32 ` Daniel Lezcano 2016-02-05 15:34 ` Robin Murphy [this message] 2016-02-05 15:34 ` Robin Murphy 2016-02-08 14:00 ` Daniel Lezcano 2016-02-08 14:00 ` Daniel Lezcano 2016-02-08 14:09 ` Marc Zyngier 2016-02-08 14:09 ` Marc Zyngier 2016-02-08 14:30 ` Daniel Lezcano 2016-02-08 14:30 ` Daniel Lezcano
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