Hi, All When kaslr comes in and kdump is broken, it seems about the right time to use E820 instead of memmap=exactmap to pass memmap for kdump for the default memmap passing mechanism: http://lists.infradead.org/pipermail/kexec/2014-February/011048.html Unfortunately, saved_max_pfn still got its user out there (calgry pci, it looks like the only one). So for backward compatibility, I'm introducing a new option --pass-memmap-cmdline to force kexec-tools to pass memmap=exactmap, the old way. Any comment is appreciate! v1->v2: Vivek: - Use function instead of macro for dbgprint_mem_range - Do not pass reserved memory range for kdump. It could addressed later separately. WANG Chao (4): cleanup: add dbgprint_mem_range function x86: Store memory ranges globally used for crash kernel to boot into x86: add --pass-memmap-cmdline option x86: Pass memory range via E820 for kdump kexec/arch/i386/crashdump-x86.c | 157 ++++++++++++++------------ kexec/arch/i386/crashdump-x86.h | 6 +- kexec/arch/i386/include/arch/options.h | 2 + kexec/arch/i386/kexec-x86-common.c | 6 +- kexec/arch/i386/kexec-x86.c | 4 + kexec/arch/i386/kexec-x86.h | 1 + kexec/arch/i386/x86-linux-setup.c | 195 ++++++++++++++++++++++++--------- kexec/arch/i386/x86-linux-setup.h | 1 + kexec/arch/x86_64/kexec-x86_64.c | 5 + kexec/kexec.c | 10 ++ kexec/kexec.h | 1 + 11 files changed, 259 insertions(+), 129 deletions(-) -- 1.8.5.3