Re: [GIT pull] x86/urgent for v5.9-rc2

From: Linus Torvalds
Date: Sun Aug 23 2020 - 18:29:29 EST


On Sun, Aug 23, 2020 at 3:01 PM Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:
>
> > And I don't think we need the GDT for anything else normally, so it's
> > not even going to be cached.
>
> Who cares, really?
>
> It's pretty irrelevant because the main source of horrors are in having
> to run through _ALL_ registered NMI handlers. Why would you worry about
> the extra cache miss?

Yeah, it's probably not a big deal, it's just sad that KVM can't do
the simpler sequence well.

Linus