# \[PATCH v2 0/2\]\[powerpc\] Export memory\_limit via device tree

- From: Suzuki K. Poulose \<hidden\>
- Date: 2012-08-21 11:42:49 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2012/08/3911959
- Thread: https://ratatoskr.run/linuxppc-dev/2012/08/3911959/t.md

```text
The following series exports the linux memory_limit set by
the mem= parameter via device-tree, so that kexec-tools
can limit the crash regions to the actual memory used by
the kernel.

Change since V1:

 * Added a patch to change the type of memory_limit to a
   fixed size(unsigned long long) from 'phys_addr_t' (which
   is 32bit on some ppc32 and 64 bit on ppc64 and some ppc32)

 * Rebased the patch to use recently fixed prom_update_property()
   which would add the property if it didn't exist.

---

Suzuki K. Poulose (2):
      [powerpc] Change memory_limit from phys_addr_t to unsigned long long
      [powerpc] Export memory limit via device tree


 arch/powerpc/include/asm/setup.h    |    2 +-
 arch/powerpc/kernel/fadump.c        |    3 +--
 arch/powerpc/kernel/machine_kexec.c |   14 +++++++++++++-
 arch/powerpc/kernel/prom.c          |    2 +-
 arch/powerpc/mm/mem.c               |    2 +-
 5 files changed, 17 insertions(+), 6 deletions(-)

-- 
Suzuki
```