allocating huge amount of memory

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Hi,

  I trying to allocate huge amount of memory >4GB (64bit) in LKM:

  kmalloc - has limit.
  multiple kmalloc (about 2000) - kernel panic.
  vmalloc - has limit (aswell as multiple vmalloc).
  appending kernel parameter vmalloc=2048M - kernel panic on boot.

  So, is there the way to allocate huge amount of memory?
  Haven't tried alloc_bootmem yet - is it the answer?

  kernel 2.6.24.5

Thanks,
Vadim.


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