From: AKASHI Takahiro <takahiro.akashi@xxxxxxxxxx> For the current crash utility, we need to know, at least, a value of "kimage_voffset" to handle the contents of core dump file (/proc/vmcore) correctly due to the introduction of KASLR (CONFIG_RANDOMIZE_BASE) in v4.6. More VMCOREINFO may be added later for makedumpfile command. Signed-off-by: AKASHI Takahiro <takahiro.akashi at linaro.org> --- arch/arm64/kernel/machine_kexec.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm64/kernel/machine_kexec.c b/arch/arm64/kernel/machine_kexec.c index 93588b2..91b0f8c 100644 --- a/arch/arm64/kernel/machine_kexec.c +++ b/arch/arm64/kernel/machine_kexec.c @@ -22,6 +22,7 @@ #include <asm/cacheflush.h> #include <asm/cpu_ops.h> +#include <asm/memory.h> #include <asm/mmu_context.h> #include <asm/system_misc.h> @@ -296,3 +297,10 @@ void machine_crash_shutdown(struct pt_regs *regs) pr_info("Starting crashdump kernel...\n"); } + +void arch_crash_save_vmcoreinfo(void) +{ + /* Please note VMCOREINFO_NUMBER() uses "%d", not "%x" */ + vmcoreinfo_append_str("NUMBER(kimage_voffset)=0x%llx\n", + kimage_voffset); +} -- 2.5.0