Yves-Alexis Perez corsac@debian.org 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