Messages in this thread |  | | Date | Wed, 4 Sep 2002 15:02:52 -0400 (EDT) | From | Craig Arsenault <> | Subject | Re: consequences of lowering "MAX_LOW_MEM"? |
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On Tue, 3 Sep 2002, Benjamin Herrenschmidt wrote:
> >I think you'll find yourself with no virtual address space left to > >do vmalloc / fixmap / kmap type stuff. Or at least you would on i386, > >I presume it's the same for ppc. Sounds like you may have left > >yourself enough space for fixmap & kmap, but any calls to vmalloc > >will probably fail ? > > Yes, same problem on PPC, you'll run out of virtual space quite > quickly for vmalloc and ioremap. Stuff a video board with lots > of VRAM or any PCI card exposing large MMIO regions into your > machines and it will probably not even boot. > > Ben. >
Ben, But doesn't using Matt's suggestion and moving both MAX_LOW_MEM and changing KERNELBASE take care of this? It's an embedded board with no video, but it does have one PCI Mezzanine Card (PMC) on it.
Thanks.
-- Craig. +------------------------------------------------------+ http://www.wombat.ca/rpmon.html RP Music Monitor http://www.washington.edu/pine/ Pine @ the U of Wash. +-------------=*sent via Pine4.44*=--------------------+
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