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

From: Ingo Molnar
Date: Mon Jan 08 2024 - 06:09:07 EST



* 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?

Thanks,

Ingo