Messages in this thread | | | From | Daniel Phillips <> | Subject | Re: Calculating kernel logical address .. | Date | Mon, 9 Sep 2002 19:40:14 +0200 |
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On Monday 09 September 2002 19:23, David S. Miller wrote: > From: "Richard B. Johnson" <root@chaos.analogic.com> > Date: Mon, 9 Sep 2002 13:29:42 -0400 (EDT) > > I think there is a virt_to_bus() macro and its inverse. > > Which is deprecate and not to be used by any new code. > Use Documentation/DMA-mapping.txt instead. > > If you meant virt_to_phys(), this does not work on arbitrary > kernel virtual addresses either only direct mapped ones > (ie. kmalloc() or get_free_page() data).
In this case he starts with a kmalloc, then mmaps it somehow. Imran, exactly what code do you use to mmap the kmalloced memory?
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