Re: [PATCH 4.9 34/77] powerpc: fix build errors in stable tree

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Yves-Alexis Perez <corsac@xxxxxxxxxx> writes:

> On Thu, 2018-02-22 at 12:01 +1100, Michael Ellerman wrote:
>> So I guess this patch is OK for now, but we do need a full back port of
>> 222f20f to 4.9.
>
> Hi,
>
> in the light of this, do you know the full status of protections against
> Meltdown on powerpc/ppc64el architecures on 4.9?

With the patches I just sent, for pseries and powernv, the mitigation
should be in place. On machines with updated firmware we'll use the
hardware-assisted L1 flush, otherwise we fallback to doing it in
software.

cheers



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