(reposting) how to get DMA'able memory within 4GB on 64-bit machi ne

From: MEHTA,HIREN (A-SanJose,ex1) (hiren_mehta@agilent.com)
Date: Wed Jun 27 2001 - 12:41:31 EST

I posted this sometime back but I guess probably it got lost.

Is there a way for a driver to ask kernel to
give DMA'able memory within 4GB ? I read about
pci_alloc_consistent(). But I could not find out
whether that guarantees the DMA'able memory to be
within 4GB or not. Is there any other kernel routine
that I should call from Driver to get such a memory ?


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This archive was generated by hypermail 2b29 : Sat Jun 30 2001 - 21:00:17 EST