On 10/24/2012 08:48 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 Hi Simon, Did you get chance to review these patchset? The kernel patches are already in upstream. Thanks, -Mahesh. > >> >> 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(-) >> > > > _______________________________________________ > kexec mailing list > kexec at lists.infradead.org > http://lists.infradead.org/mailman/listinfo/kexec >
