RE: [tip: x86/boot] x86/boot: Ignore NMIs during very early boot

[NOMURA JUNICHI(野村 淳一) <junichi.nomura@xxxxxxx>]

> From: Ingo Molnar <mingo.kernel.org@xxxxxxxxx>
> * Borislav Petkov <bp@xxxxxxxxx> wrote:
> > On Thu, Nov 30, 2023 at 08:59:44AM -0000, tip-bot2 for Jun'ichi Nomura wrote:
> > > +void do_boot_nmi_trap(struct pt_regs *regs, unsigned long error_code)
> > > +{
> > > +	/* Empty handler to ignore NMI during early boot */
> >
> > It might be good to issue something here to say that a spurious NMI got
> > ignored.
> >
> > Something ala
> >
> > 	error_putstr("Spurious early NMI ignored.\n");
> >
> > so that we at least say that we ignored an NMI and not have it disappear
> > unnoticed.
> 
> That makes sense. Jun'ichi-san, could you please send a patch for this?

Thank you for comments.  I currently don't have an environment to send a
patch without white space damage.  Could it be possible for you to apply
the attached one?

--
Jun'ichi Nomura, NEC Corporation / NEC Solution Innovators, Ltd.

Attachment: x86-early-nmi-add-msg.patch
Description: Binary data

Attachment: smime.p7s
Description: S/MIME cryptographic signature