Messages in this thread | | | From | Arnd Bergmann <> | Subject | Re: [PATCH v2] ARM: mmp: bring up pxa988 with device tree support | Date | Fri, 14 Jun 2013 14:56:15 +0200 |
| |
On Friday 14 June 2013 17:15:33 Chao Xie wrote: > On Mon, Jun 10, 2013 at 4:35 PM, Arnd Bergmann <arnd@arndb.de> wrote:
> > I guess that is a problem we have on other platforms as well, we should > > find a generic solution for that. It would be nice to reserve a page > > in "fixmap" and have common code map the SCU page into that. > > > > So you mean that reserve a page in arch/arm/asm/include/fixmap.h?
Yes.
> This reserve will depend on the cpu type beacuse only A9 will have SCU part.
I think A5 and ARM11MPCore as well.
> I do not know that in fixmap, the #ifdef is acceptable or not.
Yes, it is. We don't really use fixmap on ARM for anything other than kmap_atomic at the moment. Please have a look at the powerpc and x86 implementations.
> For the common code to map the SCU page, where do you suggest to put it?
arch/arm/kernel/smp_scu.c.
Arnd
| |