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> If I leave the SRAM mapped at higher addresses 0x10000000
    Absolut> and SDRAM at 0x00000000, like U-boot defaults to Linux
    Absolut> works great. However, my goal is to map SRAM <8ns speeds>
    Absolut> down to the address 0x00000000, to map the vector table, so
    Absolut> I can achieve a very fast interrupt response time.

  Are you mapping the SRAM *OVER* the lower 2MB of address space?

  If so, then you won't have 34Mb of ram, you'll have 32Mb, and Linux
may well be running off the end under stress.

  My memory is that you can move the vector table to another address.
Wouldn't that be easier?

- -- 
] 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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