Hi...
On Mon, Nov 26, 2012 at 1:51 PM, Vijay Chauhan kernel.vi...@gmail.com wrote:
Is it necessary that vmalloc always allocate virtually contiguous
memory and not physically contiguous?
to the best I know, yes vmalloc allocate virtually contigous.
However, since they manage the pages by
On Thu, Nov 22, 2012 at 9:39 AM, Mulyadi Santosa
mulyadi.sant...@gmail.com wrote:
On Thu, Nov 22, 2012 at 10:12 AM, horse_rivers horse_riv...@126.com wrote:
thanks!
kmalloc allocates memory from slab cache. It tends to be physically
contigous and you can get memory size smaller than page
thanks!
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On Thu, Nov 22, 2012 at 10:12 AM, horse_rivers horse_riv...@126.com wrote:
thanks!
kmalloc allocates memory from slab cache. It tends to be physically
contigous and you can get memory size smaller than page size.
vmalloc, on the other hand, is when you need only virtually contigous
memory area.
kmalloc allocates physically contiguous memory, while vmalloc
allocates memory which is only virtually contiguous and not
necessarily physically contiguous.
Usually physically contiguous memory is required for hardware devices
(dma etc) , thus kmalloc is useful for allocating such memory. And
