Thread (2 messages) flat view 2 messages, 2 authors, 2012-09-07
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[PATCH] ARM: ixp4xx: move fixed mapping of internal devices into vmalloc region

From: arnd@arndb.de (Arnd Bergmann)
Date: 2012-09-07 12:23:29

On Friday 07 September 2012, gerg at snapgear.com wrote:
From: Greg Ungerer <redacted>

The current fixed physical/virtual mappings for the internal peripherals
of the ixp4xx SoC devices is using a virtual address outside of the vmalloc
region. This results in kernel warnings like this on the boot console:

  BUG: mapping for 0xc8000000 at 0xffbeb000 out of vmalloc space
  BUG: mapping for 0xc4000000 at 0xffbfe000 out of vmalloc space
  BUG: mapping for 0xc0000000 at 0xffbff000 out of vmalloc space

The virtual kernel memory layout lists this for the vmalloc region:

    ...
    vmalloc : 0xc2800000 - 0xff000000   ( 968 MB)
    ...

With a little adjustment to the virtual address used we can map these
internal devices in the vmalloc region.

Signed-off-by: Greg Ungerer <redacted>
Acked-by: Arnd Bergmann <arnd@arndb.de>

Imre, Krzysztof: do you prefer to take this patch into a branch of yours
and send a pull request, or should we just apply it directly into arm-soc.
In the former case, can you provide an Ack?

	Arnd
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