Messages in this thread | | | From | "Simon Garner" <> | Subject | Re: MSI K8D-Master - GART error 3 | Date | Tue, 5 Aug 2003 12:45:01 +1200 |
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Andi Kleen <ak@muc.de> wrote:
> There is nothing in any of my trees that generates such a message. > If it was GART related it would be either "GART TLB error ..." or > "extended error gart error". But even that should not happen anymore, > see below. > > I don't know what the RedHat kernel does, they may have changed the > MCE handler over the reference port. >
A quick google brings up this reference: http://www.iglu.org.il/lxr/source/arch/x86_64/kernel/bluesmoke.c
The error appears to be generated by the code starting around line 152 in that file.
Btw, what is 'bluesmoke'?
>> The system also has an Adaptec 2120S scsi raid card. > > Probably the driver is doing something bad with the pci_dma API > (which uses the GART on x86-64) >
Certainly I had a lot of trouble with this card, I was pleased the aacraid driver worked enough to let me even install this time - the Red Hat GinGin64 installer gave a kernel panic - so I wouldn't be surprised if this card/driver were the cause. :(
> You can always disable it with mce=off or better mce=0 > as the message seems to be caused by the periodic non fatal MCE check > timer. >
What will I lose by disabling this?
I just tried booting with mce=0 and I am still getting the same errors.
> However there was a bug in the MCE handler where it managed to turn on > an GART related MCE event through the backdoor that doesn't work > correctly and is sometimes raised spuriously. But at least in the SuSE > beta9 kernel or recent x86-64.org kernels this should have been > fixed. But it doesn't generate such a error message anyways, > so it's hard to know what the exact cause is. > > I would suggest to retry with a recent x86-64.org CVS kernel and see > if it still happens there. >
I will give that a go and see what happens.
Thanks for the response Andi.
-Simon
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