[PATCH 5/7] ARM: clps711x: make all virtual addresses definition via one macro
Alexander Shiyan
shc_work at mail.ru
Thu Oct 11 10:24:38 EDT 2012
On Wed, 10 Oct 2012 18:25:49 +0000
Arnd Bergmann <arnd at arndb.de> wrote:
> On Wednesday 10 October 2012, Alexander Shiyan wrote:
> > This patch make all virtual addresses definition via one macro.
> > This modification allows to avoid warning "BUG: mapping for 0x80000000
> > at 0xff000000 out of vmalloc space".
> >
> > Signed-off-by: Alexander Shiyan <shc_work at mail.ru>
>
> Two comments on this one:
>
> * I wonder if we could just kill off some of the mappings if no driver
> relies on the registers being mapped in advance, especially for those
> that don't benefit from section mapping like the ethernet one that is
> only a page anyway.
I'm working on this and the next series of patches will be is almost
completely free of static mappings.
> * I would recommend defining the IO_ADDRESS macro in a way that the
> result is of type 'void __iomem *', and you add a cast in the
> map_desc array. We will probably clean those up eventually and
> require that they are pointers at that place anyway, based on
> recent discussions.
It's easy to do. Will be considered in the next series of patches.
--
Alexander Shiyan <shc_work at mail.ru>
More information about the linux-arm-kernel
mailing list