Re: [RFC PATCH] x86, mce: change the mce notifier to 'blocking' from 'atomic'

[Luck, Tony]

On Wed, Apr 12, 2017 at 01:27:05PM -0700, Verma, Vishal L wrote:
> >  	/* We only care about memory errors */
> >  	if (!(mce->status & MCACOD))
> >  		return NOTIFY_DONE;

N.B. that isn't a valid test that this is a memory error. You need


	if (!(m->status & 0xef80) == BIT(7))
		return NOTIFY_DONE;

See: Intel SDM Volume 3B - 15.9.2 Compound Error Codes

-Tony