Re: [OpenBIOS] [PATCH 0/7] Assorted OpenBIOS memory fixes

[Blue Swirl]

On Fri, Apr 12, 2013 at 12:57 PM, Mark Cave-Ayland
 wrote:
> This patchset fixes various issues found working with the removal of the zero
> page mapping for SPARC32/PPC in order to catch NULL pointer dereferences.
>
> With all patches applied, I see no regressions in any of my SPARC32 or PPC test
> images.

I don't see any problems in my tests either.
> Mark Cave-Ayland (7):
>   SPARC32: Add debugging output for calls to the romvec obp_memalloc()
>     and obp_dumb_memalloc() functions.
>   OFMEM: Fix selection of reusable memory areas from the internal
>     malloc() freelist.
>   Remove /chosen "memory" property from the default device tree.
>   OFMEM: Fix bad alignments passed into the OFMEM claim words
>   SPARC32: Remove manual fix for bad alignments passed into the romvec
>     malloc() functions
>   SPARC32: Remove zero page mapping from MMU to enable detection of
>     NULL pointer dereferences
>   PPC: Remove zero page mapping from MMU to enable detection of NULL
>     pointer dereferences
>
> openbios-devel/arch/ppc/qemu/ofmem.c        |   11 ++++++---
>  openbios-devel/arch/sparc32/init.fs         |    2 +-
>  openbios-devel/arch/sparc32/lib.c           |   34 ++++++++++-----------------
>  openbios-devel/arch/sparc32/ofmem_sparc32.c |    3 +++
>  openbios-devel/forth/device/tree.fs         |    1 -
>  openbios-devel/libopenbios/ofmem_common.c   |   22 +++++++++++++----
>  6 files changed, 42 insertions(+), 31 deletions(-)