Messages in this thread | | | Date | Fri, 18 Dec 2009 12:56:39 +0100 | From | Borislav Petkov <> | Subject | Re: radeon KMS causes GART Table Walk Errors (was: K8 ECC error with linux-2.6.32) |
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On Thu, Dec 17, 2009 at 08:03:29PM +0100, Johannes Hirte wrote: > GART Error Reporting was disabled. Here is the output after enabling it: > > datengrab ~ # lsmsr MC4 -V3 > MC4_CTL = 0x0000000000003bff > CorrEccEn=0x1 > UnCorrEccEn=0x1 > CrcErr0En=0x1 > CrcErr1En=0x1 > CrcErr2En=0x1 > SyncPkt0En=0x1 > SyncPkt1En=0x1 > SyncPkt2En=0x1 > MstrAbrtEn=0x1 > TgtAbrtEn=0x1 > GartTblWkEn=0 > AtomicRMWEn=0x1 > WchDogTmrEn=0x1 > DramParEn=0
[.. ]
> MC4_CTL_MASK = 0x0000000000000000 > CorrEccEn=0 > UnCorrEccEn=0 > CrcErr0En=0 > CrcErr1En=0 > CrcErr2En=0 > SyncPkt0En=0 > SyncPkt1En=0 > SyncPkt2En=0 > MstrAbrtEn=0 > TgtAbrtEn=0 > GartTblWkEn=0
Ok, thanks for testing. It looks like your BIOS is applying the wrong workaround when the option is enabled. It clears MC4_CTL[GartTblWkEn], which means, it disables reporting of GART table walk errors while they're still being logged by the hw. What it should do is to set MC4_CTL_MASK[GartTblWkEn] to 1 so that logging gets disabled, as it is recommended in the K8 BKDG.
-- Regards/Gruss, Boris.
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