Messages in this thread | | | Date | Sun, 11 Nov 2007 16:22:15 -0800 | From | "H. Peter Anvin" <> | Subject | Re: PCI card initialisation at boot |
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Matt Domsch wrote: > On Sun, Nov 11, 2007 at 04:46:44PM +0000, Alan Cox wrote: >> Linux by default uses the BIOS resource assignments. It doesn't know >> where those came from other than "the BIOS". > > Slightly tangential, but I'm starting to hear requests to have the OS > re-assign resources when it might make better sense. For example, if > you have a graphics card with a 1GB memory allocation, the BIOS may > assign it into address ranges below 4GB because it doesn't know > if the OS will be 32-bit or 64-bit capable. But, it would be > beneficial to have it located above 4GB, and to fill in the (new) hole > below 4GB with RAM. Linux right now doesn't have a way to do this. > It will assign resources for cards that the BIOS left unassigned, but > won't intentionally move resources. >
Not really. If the OS is 64-bit capable, it can just use the RAM above 4 GB.
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