Messages in this thread | | | Date | Tue, 29 Sep 1998 12:32:15 +0200 (CEST) | From | Andrea Arcangeli <> | Subject | Re: Memory allocation of 132 KB |
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On Tue, 29 Sep 1998 sroy@wipinfo.soft.net wrote:
>Hi, > >In a network driver, I tried to allocate memory for DMA buffer of length >132 KB and the call (kmalloc()) failed. Hacking through kmalloc.c, I found >that it does not allow allocating memory more than (128K - 24) bytes, if the >page size is 4KB. > >Me questions are - > >1. Why is that limitation ? >2. Is there any way to allocate 132 KB memory (physically contiguous) ?
Use __get_free_pages() by hand specifying the order or mm you need. order 0 -> 1 page, order 2 -> 2page, order 3 -> 4 page etc..etc..
Andrea[s] Arcangeli
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