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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Leo Yan <leo.yan@linaro.org>
Cc: stable@vger.kernel.org, Marc Zyngier <marc.zyngier@arm.com>,
	John Stultz <john.stultz@linaro.org>,
	Dmitry Shmidt <dimitrysh@google.com>
Subject: Re: [RESEND PATCH] arm64: arch_timer: Workaround for Cortex-A73 erratum 858921
Date: Wed, 30 Aug 2017 08:03:38 +0200	[thread overview]
Message-ID: <20170830060338.GA3035@kroah.com> (raw)
In-Reply-To: <1504069569-27809-1-git-send-email-leo.yan@linaro.org>

On Wed, Aug 30, 2017 at 01:06:09PM +0800, Leo Yan wrote:
> commit fa8d815fac96e7c9247783d5a1f8fa4685b3c543 upstream.
> 
> Cortex-A73 (all versions) counter read can return a wrong value
> when the counter crosses a 32bit boundary.
> 
> The workaround involves performing the read twice, and to return
> one or the other depending on whether a transition has taken place.
> 
> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
> Signed-off-by: Leo Yan <leo.yan@linaro.org>
> ---
>  arch/arm64/Kconfig                  | 12 ++++++++++++
>  arch/arm64/include/asm/arch_timer.h | 11 +++++++++++
>  2 files changed, 23 insertions(+)

Why [RESEND] ?

And what stable kernel tree(s) do you want this to be applied to?

thanks,

greg k-h

  reply	other threads:[~2017-08-30  6:03 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-08-30  5:06 [RESEND PATCH] arm64: arch_timer: Workaround for Cortex-A73 erratum 858921 Leo Yan
2017-08-30  6:03 ` Greg Kroah-Hartman [this message]
2017-08-30  6:12   ` Leo Yan
2017-08-30  8:02 ` Marc Zyngier
2017-08-30  8:20   ` Leo Yan
2017-08-30  8:46     ` Marc Zyngier
2017-08-31  0:30       ` Leo Yan
2017-08-31  8:30         ` Marc Zyngier
2017-09-01  2:01           ` Leo Yan

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