Re: [PATCH v2 1/3] mm: highmem: export kmap_to_page for modules

On Tue, Oct 23, 2012 at 12:55:57AM +0100, Rusty Russell wrote:

Will Deacon [off-list ref] writes:

quoted

Some virtio device drivers (9p) need to translate high virtual addresses
to physical addresses, which are inserted into the virtqueue for
processing by userspace.

This patch exports the kmap_to_page symbol, so that the affected drivers
can be compiled as modules.

Thanks Will!

I've applied these, and add cc:stable.  I'll push them to Linus after a
little time in linux-next.

Cheers Rusty. Andrew's right about this affecting highmem on x86 too (I
guess that's what Sasha saw with the 9p memory issues), so stable makes
sense.

Will