linux-kernel - Re: [PATCH v7 08/41] x86/shstk: Add user control-protection fault handler

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Date:   Wed, 1 Mar 2023 18:14:44 +0000
From:   "Edgecombe, Rick P" <rick.p.edgecombe@...el.com>
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Subject: Re: [PATCH v7 08/41] x86/shstk: Add user control-protection fault
 handler

On Wed, 2023-03-01 at 19:06 +0100, Borislav Petkov wrote:
> On Mon, Feb 27, 2023 at 02:29:24PM -0800, Rick Edgecombe wrote:
> > diff --git a/arch/x86/kernel/cet.c b/arch/x86/kernel/cet.c
> > index 7ad22b705b64..cc10d8be9d74 100644
> > --- a/arch/x86/kernel/cet.c
> > +++ b/arch/x86/kernel/cet.c
> > @@ -4,10 +4,6 @@
> >   #include <asm/bugs.h>
> >   #include <asm/traps.h>
> >   
> > -static __ro_after_init bool ibt_fatal = true;
> > -
> > -extern void ibt_selftest_ip(void); /* code label defined in asm
> > below */
> > -
> >   enum cp_error_code {
> >        CP_EC        = (1 << 15) - 1,
> 
> From a previous review:
> 
> "That looks like a mask, so
> 
>         CP_EC_MASK
> 
> I guess."

It is from the existing code:

https://lore.kernel.org/lkml/393a03d063dee5831af93ca67636df75a76481c3.camel@intel.com/#t

The rename certainly doesn't belong in the code move patch, but I took
the previous discussion to mean it didn't belong in this patch either.
Do you want me to add it to this one or a separate one?