Linux 2.4.25 / MPC8280 / ram config vs Linux instability?

[Michael Richardson]

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>>>>> "Absolut" == Absolut Hunter <absoluthunter at comcast.net> writes:
    Absolut> A useful piece to this might be that I am attempting to map
    Absolut> these two memory regions contiguously, so that Linux
    Absolut> doesn't see any memory holes.

    Absolut> 0-2MB SRAM 2MB-34MB SDRAM

  Likely you can't do that, because you must map the blocks at a
multiple of their address. (I'm not an expert at PPC mappings, but this
is typically the case)

  So you can do:
	 0x000000000	   SRAM		(has a hole from 2MB->32Mb)
	 0x002000000	   SDRAM

  or:
	 0x000000000	   SDRAM
	 0x002000000	   SRAM

    Absolut> I would be open to any other ways that SRAM / SDRAM might
    Absolut> be mapped to work, and still provide a performance increase
    Absolut> for the kernel.

  I think that you would be better to lock the relevant interrupt code
into the cache, if that is possible.
   
- -- 
] Michael Richardson          Xelerance Corporation, Ottawa, ON |  firewalls  [
] mcr @ xelerance.com           Now doing IPsec training, see   |net architect[
] http://www.sandelman.ca/mcr/    www.xelerance.com/training/   |device driver[
]                    I'm a dad: http://www.sandelman.ca/lrmr/                 [
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