netdev - Re: skge: PCI error cmd=0x117 status=0x22b0

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Message-ID: <20081114175507.GC7172@fi.muni.cz>
Date:	Fri, 14 Nov 2008 18:55:07 +0100
From:	Jan Kasprzak <kas@...muni.cz>
To:	Stephen Hemminger <shemminger@...tta.com>
Cc:	netdev@...r.kernel.org
Subject: Re: skge: PCI error cmd=0x117 status=0x22b0

Stephen Hemminger wrote:
: On Fri, 14 Nov 2008 16:36:46 +0100
: Jan Kasprzak <kas@...muni.cz> wrote:
: 
: > 	Hello,
: > 
: > I have an ASUS M2R32-MVP board with the skge network card. From time to time
: > the network freezes with the following message (this one taken from
: > 2.6.27-rc7, another one added even with timing information at the end
: > of this mail):
: > 
: > skge 0000:03:04.0: PCI error cmd=0x117 status=0x22b0
: > skge 0000:03:04.0: unable to clear error (so ignoring them)
: 
: The device is getting a PCI master abort on a DMA.
: Either, you have hardware issues, or there is a driver bug when accessing
: a particular memory address.  Do you have 4G or more of memory?

	Yes (I have written it in my previous mail) - I have 8 GB of RAM.
Can - for example - a non-linear memory (i.e. the memory hole remapping)
be a problem? IIRC, I have it set to "on" in my BIOS setup.

: Some motherboards are crap and don't actually allow DMA from high memory.

	With 8 GB only half of my RAM is below the 32-bit barrier,
so I guess if this was a problem, I would got this error more often
(every second packet on average?).

	OK, I will try to poke my HW vendor. Thanks,

-Yenya

-- 
| Jan "Yenya" Kasprzak  <kas at {fi.muni.cz - work | yenya.net - private}> |
| GPG: ID 1024/D3498839      Fingerprint 0D99A7FB206605D7 8B35FCDE05B18A5E |
| http://www.fi.muni.cz/~kas/    Journal: http://www.fi.muni.cz/~kas/blog/ |
>>  If you find yourself arguing with Alan Cox, you’re _probably_ wrong.  <<
>>     --James Morris in "How and Why You Should Become a Kernel Hacker"  <<
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