Re: [PATCH v4 6/7] x86/cpufeature: Blacklist SPEC_CTRL on early Spectre v2 microcodes

From: Alan Cox
Date: Thu Jan 25 2018 - 11:18:01 EST


> Here's what I have now. I'm happy enough with this, so the main thing
> I'm looking for is an ack from Alan for patch #5 of the series, if I've
> got that sufficiently correct now.

You have my ACK for patch 5: Any further changes I'll submit as updates
once it's merged.

I am happy with patch 5 and I think for 64bit we are probably done for
the mainstream. VIA/Centaur data would be nice.

The microcode otoh I don't think makes sense - do you want to be secure
with a slightly higher risk of crashes or insecure ? Once you can point
at a newer ucode for each case then yes I personally at least think it
then makes sense to tell users they want the newer one.

Alan