On Tue, Sep 22, 2015 at 06:50:44PM +0200, Christophe Leroy wrote:
> diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c
> index 3fd9083..1f2fdbc 100644
> --- a/arch/powerpc/mm/pgtable_32.c
> +++ b/arch/powerpc/mm/pgtable_32.c
> @@ -49,6 +49,10 @@ EXPORT_SYMBOL(ioremap_bot);
From: Scott Wood
> Sent: 24 September 2015 21:14
> > Isn't this a more general problem?
> >
> > If there are multiple remap requests for the same physical page
> > shouldn't the kernel be just increasing a reference count somewhere
> > and returning address in the same virtual page?
> > This
On Fri, 2015-09-25 at 14:46 +, David Laight wrote:
> From: Scott Wood
> > Sent: 24 September 2015 21:14
> > > Isn't this a more general problem?
> > >
> > > If there are multiple remap requests for the same physical page
> > > shouldn't the kernel be just increasing a reference count
From: Christophe Leroy
> Sent: 22 September 2015 17:51
...
> Traditionaly, each driver manages one computer board which has its
> own components with its own memory maps.
> But on embedded chips like the MPC8xx, the SOC has all registers
> located in the same IO area.
>
> When looking at ioremaps
On Thu, 2015-09-24 at 11:41 +, David Laight wrote:
> From: Christophe Leroy
> > Sent: 22 September 2015 17:51
> ...
> > Traditionaly, each driver manages one computer board which has its
> > own components with its own memory maps.
> > But on embedded chips like the MPC8xx, the SOC has all
