Re: [RESEND PATCH] arm64: arch_timer: Workaround for Cortex-A73 erratum 858921

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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@xxxxxxx>
> Signed-off-by: Leo Yan <leo.yan@xxxxxxxxxx>
> ---
>  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



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