https://bugzilla.novell.com/show_bug.cgi?id=407592
User mcowley@novell.com added comment
https://bugzilla.novell.com/show_bug.cgi?id=407592#c100
--- Comment #100 from Mark Cowley 2009-01-31 22:22:09 MST ---
Sorry, I lost track of this bug over the holidays. I sent the above info to
the Dell BIOS developer and got the following reply:
"These test results seem reasonable for D630, but for D830, we only did a
similar 4GB memory support change on A13 and later, but you said it still fails
at A09.
In BIOS, we need to reserve some memory address for system memory map, such as
PCI, PCIE system memory map. It is usually located in the top memory just below
4GB.
Intel has memory reclaim technology. It allows the system to remap system
memory to above 4GB, so it can release more useable memory under 4GB for the
user.
Before A13, we enabled Intel memory reclaim technology to remap system memory
to above 4GB. But customers reported that sometimes some memory address content
corrupted after S3 resume. So with A13 we quit using Intel memory reclaim
technology, and used the usual method to allocate system memory map at the
fixed address of 3.5GB(E0000000h)"
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