linux-kernel - Re: [PATCH v2 1/3] mm: highmem: export kmap_to

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Date:	Tue, 23 Oct 2012 11:33:52 +0100
From:	Will Deacon <will.deacon@....com>
To:	Rusty Russell <rusty@...tcorp.com.au>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"levinsasha928@...il.com" <levinsasha928@...il.com>,
	Marc Zyngier <Marc.Zyngier@....com>,
	"virtualization@...ts.linux-foundation.org" 
	<virtualization@...ts.linux-foundation.org>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"ericvh@...il.com" <ericvh@...il.com>
Subject: 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 <will.deacon@....com> writes:
> 
> > 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
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