RE: [PATCH] Microblaze: implement dma-coherent API andrefactorcacheflush code.

[Geert Uytterhoeven]

On Mon, 5 May 2008, Stephen Neuendorffer wrote:
> > -----Original Message-----
> > From: John Williams [mailto:john.williams@xxxxxxxxxxxxx]
> > 
> > Sure - what I meant is can dma_alloc just call kmalloc to do it's
> work?
> 
> I scanned through Linux Device Drivers, and it appears that calling
> get_free_pages is:
> 1) more efficient than kmalloc for large allocations
> 2) allocates physically contiguous memory, which kmalloc doesn't
> necessarily do if there's an mmu.

kmalloc() allocates physically contiguous memory, vmalloc() doesn't.

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds
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