Re: [GIT PULL] x86/urgent for v5.11-rc7

From: Borislav Petkov
Date: Sun Feb 07 2021 - 12:59:04 EST


On Sun, Feb 07, 2021 at 09:49:18AM -0800, Linus Torvalds wrote:
> On Sun, Feb 7, 2021 at 2:40 AM Borislav Petkov <bp@xxxxxxx> wrote:
> >
> > - Disable CET instrumentation in the kernel so that gcc doesn't add
> > ENDBR64 to kernel code and thus confuse tracing.
>
> So this is clearly the right thing to do for now, but I wonder if
> people have a plan for actually enabling CET and endbr at cpl0 at some
> point?

It probably is an item on some Intel manager's to-enable list. So far,
the CET enablement concentrates only on userspace but dhansen might know
more about future plans. CCed.

--
Regards/Gruss,
Boris.

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