[PATCH 0/2] kexec: Limit the crash memory ranges according to first kernel's memory limit.

[Baoquan]

On 11/13/2012 11:36 AM, Baoquan wrote:
> Hi,
>
> I have tested ppc64 part of this patchset, and it works.
> Do you plan to merge this patchset?
>
Sorry, above question should go to Simon.
> On 10/24/2012 11:18 AM, Mahesh Jagannath Salgaonkar wrote:
>> On 08/29/2012 01:54 PM, Mahesh J Salgaonkar wrote:
>>> So far powerpc kernel never exported memory limit information which is
>>> reflected by mem= kernel cmdline option. Hence, kexec-tools always use
>>> to build ELF header for entire system RAM generating a dump bigger than
>>> the actual memory used by the first kernel.
>>>
>>> The proposed upstream kernel patch at
>>> https://lists.ozlabs.org/pipermail/linuxppc-dev/2012-August/100500.html
>>> now exports memory limit information through /proc/device-tree file.
>>> The above patch is still in discussion.
>> The above mentioned kernel patches are now upstream. Below are commit 
>> ids:
>> 4bc77a5e - powerpc: Export memory limit via device tree
>> a84fcd468 - powerpc: Change memory_limit from phys_addr_t to unsigned
>> long long
>>
>>> This patch series now reads the memory limit information from
>>> device-tree file if present and limits the crash memory ranges 
>>> accordingly.
>>>
>>> Tested these patches on ppc32(ppc440) and ppc64 with a kernel patch 
>>> by Suzuki.
>>>
>>> Signed-off-by: Mahesh Salgaonkar<mahesh at linux.vnet.ibm.com>
>>> Tested-by: Suzuki K. Poulose<suzuki at in.ibm.com>
>>>
>>> ---
>>>
>>> Mahesh Salgaonkar (2):
>>>        kexec: Respect memory limit while building crash memory 
>>> ranges on ppc32.
>>>        kexec: Respect memory limit while building crash memory 
>>> ranges on ppc64
>>>
>>>
>>>   kexec/arch/ppc/crashdump-powerpc.c |   14 ++++++++---
>>>   kexec/arch/ppc/crashdump-powerpc.h |    1 +
>>>   kexec/arch/ppc/kexec-ppc.c         |   48 
>>> ++++++++++++++++++++++++++++++++++++
>>>   kexec/arch/ppc64/crashdump-ppc64.c |   11 ++++++++
>>>   kexec/arch/ppc64/crashdump-ppc64.h |    1 +
>>>   kexec/arch/ppc64/kexec-ppc64.c     |   28 +++++++++++++++++++++
>>>   6 files changed, 99 insertions(+), 4 deletions(-)
>>>
>>
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