from the tail end of the theregister article...

PS: It appears 64-bit ARM Linux kernels will also get a set of KAISER patches, completely splitting the kernel and user spaces, to block attempts to defeat KASLR. We'll be following up this week.

On 3 January 2018 at 20:03, Erik Christiansen via luv-main <luv-main@luv.asn.au> wrote:

On 03.01.18 15:11, Arjen Lentz via luv-main wrote:
> This raises the interesting question: will distros start to provide
> separate kernel packages for Intel and AMD CPUs. I'd guess they will,
> as the performance hit of the KPTI workaround is significant.
>
> I use AMD desktops and servers at my home office, and naturally I'd
> like to keep the performance they deliver.

Sadly, the AMD cpus have a variant of the Intel Management Engine
lurking under the hood, with a further unknown vulnerability level, just
like Intel. (Oh, OK, the Remote Elevation of Privilege bug (SA-00075) is
known, but the rest aren't - yet.)

Erik

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Dr Paul van den Bergen