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

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On Thu, Aug 31, 2017 at 09:30:29AM +0100, Marc Zyngier wrote:
> Hi Leo,
> 
> On 31/08/17 01:30, Leo Yan wrote:
> > Hi Marc,
> > 
> > On Wed, Aug 30, 2017 at 09:46:26AM +0100, Marc Zyngier wrote:
> > 
> > [...]
> > 
> >> Then these systems are completely broken if they use a Cortex-A73.
> >> Either they run mainline (which will be just fine), or they get a fully
> >> backported workaround infrastructure.
> > 
> > Yeah, we should do right thing.
> > 
> > Have ARM kernel team ported this patch series (or is in planning)? I
> > also will check with Linaro kernel team as well, I just want to avoid
> > duplicate efforts if these patches have been back ported. Otherwise, I
> > will backport the patch series.
> I have no plan to backport this to older kernels. This is new HW that
> didn't exist (or wasn't publicly available) when 4.4/4.9 were released,
> so 4.12 is effectively the first kernel I intend to support this erratum on.
> 
> If you have an interest in running older kernels on this HW, you'll have
> to do the backport yourself. Please make sure you Cc both Mark and
> myself on the patches.

Sure, will do this.

Thanks,
Leo Yan



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