DMA mapping and loadable modules

[Roman Zippel]

Hi,

On Thu, 8 Feb 2001, Dan Malek wrote:

> There is a problem when loadable drivers with "static" data stuctures
> try to determine the physical address for DMA.  The "virt_to_bus"
> macro doesn't work for these (or for any dynamically allocated memory).

Sure, they can use get_free_page/kmalloc and it will work.

> These drivers will work fine when compiled in, and break when loaded
> as modules.

The same problem exists on any architecture.

bye, Roman


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