MMCONFIG & MCFG (e820)

Dave Jones davej at redhat.com
Tue Sep 5 15:52:34 UTC 2006


On Tue, Sep 05, 2006 at 06:38:44PM +0600, SERGIE wrote:
 > This is my dmesg... On setting `quiet' parameter to the kernel a problem arise 
 > on STDERR, which says (these strings somewhere below):
 > 
 > ===
 > PCI: BIOS Bug: MCFG area at e0000000 is not E820-reserved
 > PCI: Not using MMCONFIG.
 > ===
 > 
 > What could be the attempts I would try to get rid of this problem. I tried 
 > setting "Direct" in kernel PCI Access Mode - it works well. However I want to 
 > use "any" option, which chooses MMCONFIG first...
 > 
 > Please help if someone is able to...

As the message states, it's a BIOS bug.
Look for an update from your motherboard vendor.

	Dave




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