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

[Ingo Molnar]

* Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> 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. And yes, we'll have at least
> an rc8 this release..

I'm definitely resigned to them, and with these patches being disclosed so late
we don't have any good choices left, so a tentative:

Acked-by: Ingo Molnar <mingo@xxxxxxxxxx>

Thanks,

	Ingo