Messages in this thread | | | Date | Wed, 17 Jun 2020 11:49:01 -0700 | From | "Luck, Tony" <> | Subject | Re: [PATCH] x86/mce: Add Skylake quirk for patrol scrub reported errors |
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On Wed, Jun 17, 2020 at 09:41:58AM +0200, Borislav Petkov wrote: > On Tue, Jun 16, 2020 at 10:33:08PM +0000, Luck, Tony wrote: > > If the BIOS option is left in the default setting, uncorrectable errors found > > by the patrol scrubber are reported with a machine check. Those MSCOD > > and MCACOD signatures are the same ... but that's not important because > > MCi_STATUS.UC==1. So Linux doesn't need to jump through hoops to > > "upgrade" the severity. > > No, this is not what I meant: I meant when you have the setting enabled > to downgrade those errors, can they be detected as part of another MCE > being raised...
Yes one of these downgraded error logs could be sitting in a bank whe a different machine check fires. But the severity calculation will ignore it as MCi_STATUS.EN==0
-Tony
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