Re: [PATCH v6 00/10] Retpoline: Avoid speculative indirect calls in kernel

From: Thomas Gleixner
Date: Mon Jan 08 2018 - 05:01:56 EST


On Sun, 7 Jan 2018, Linus Torvalds wrote:

> On Sun, Jan 7, 2018 at 2:11 PM, David Woodhouse <dwmw@xxxxxxxxxxxx> wrote:
> > This is a mitigation for the 'variant 2' attack described in
> > https://googleprojectzero.blogspot.com/2018/01/reading-privileged-memory-with-side.html
>
> Ok, I don't love the patches, but I see nothing horribly wrong here
> either, and I assume the performance impact of this is pretty minimal.
>
> Thomas? I'm obviously doing rc7 today without these, but I assume the
> x86 maintainers are resigned to this all.

That seems to be the general mental state for lots of involved people.

Thanks,

tglx