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