Messages in this thread | | | Date | Thu, 11 Jan 2001 12:39:33 -0800 (PST) | From | Paul Powell <> | Subject | Linux driver: __get_free_pages() |
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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?
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