Re: [PATCH] x86, mce: Fix machine_check_poll() tests for which errors to log

[Luck, Tony]

On Mon, Mar 11, 2019 at 08:25:53PM +0000, Ghannam, Yazen wrote:
> > +		if (!(m.status & MCI_STATUS_PCC) && !(m.status & MCI_STATUS_S))
> > +			goto log_it;
> > +
> 
> Can you please include a vendor check with this? MCi_STATUS[56] is
> not defined the same way on AMD systems.

Original code also looked at MCi_STATUS[56] without a vendor
check:

> > -               (m.status & (mca_cfg.ser ? MCI_STATUS_S : MCI_STATUS_UC)))

Was this OK because you don't set mca_cfg.ser?

If so, my new code will also skip out before getting to this test. But
should probably have a better comment. Something like:


		/*
		 * Newer Intel systems that support software error
		 * recovery need to make some extra checks. Other
		 * CPUs should skip over uncorrected errors, but log
		 * everything else
		 */
		if (!mca_cfg.ser) {
			if (m.status & MCI_STATUS_UC)
				continue;
			goto log_it;
		}

-Tony