On Tue, Feb 12, 2013 at 04:16:50PM +0530, 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 following upstream kernel commits now exports memory limit information > through /proc/device-tree file: > 4bc77a5ed - 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. > > Changes in v2: > - Fixed few formatting and coding style issues. > - Fixed error handling path and possible buffer overflow issue in patch 1/2. > - Fixed an issue where an additional PT_LOAD section, representing zero size > memory segment (with start address == memory_limit), was getting added to ELF > section. > > Signed-off-by: Mahesh Salgaonkar <mahesh at linux.vnet.ibm.com> > Tested-by: Suzuki K. Poulose <suzuki at in.ibm.com> Thanks, both patches applied.
