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SubjectRe: Linux driver: __get_free_pages()
Em Thu, Jan 11, 2001 at 12:39:33PM -0800, Paul Powell escreveu:

> Our driver is trying to allocate a DMA buffer to flash an adapter's
> firmware. This can require as much as 512K ( of contiguous DMA memory ).
> We are using the function __get_free_pages( GFP_KERNEL | GFP_DMA, order)
> . The call is failing if 'order' is greater than 6. The problem is seen
> on systems with system memory of only 64MB. It works fine on systems
> with more memory. Does it make sense that a system with 64MB would not
> have 512K ( contiguous ) available? The most that can be allocated
> successfully on the 64MB system appears to be 256K. (Nothing else is
> running that would eat up 64MB of memory).

> Does this make sense and/or is there another way that the DMA memory
> could be allocated successfully?

look at mm/bootmem.c

- Arnaldo
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