diff options
| author | AKASHI Takahiro <takahiro.akashi@linaro.org> | 2017-04-03 11:24:37 +0900 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2017-04-05 18:29:47 +0100 |
| commit | 20a166243328c14a0c24bd8c7919223ab4174917 (patch) | |
| tree | 7e89c6a856a80b54d53258d308b0683d3a9a0da0 /arch/arm64/kernel/machine_kexec.c | |
| parent | 78fd584cdec0518075cf3aa75e5ec491cc8f3ff3 (diff) | |
arm64: kdump: add VMCOREINFO's for user-space tools
In addition to common VMCOREINFO's defined in
crash_save_vmcoreinfo_init(), we need to know, for crash utility,
- kimage_voffset
- PHYS_OFFSET
to examine the contents of a dump file (/proc/vmcore) correctly
due to the introduction of KASLR (CONFIG_RANDOMIZE_BASE) in v4.6.
- VA_BITS
is also required for makedumpfile command.
arch_crash_save_vmcoreinfo() appends them to the dump file.
More VMCOREINFO's may be added later.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: James Morse <james.morse@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/kernel/machine_kexec.c')
| -rw-r--r-- | arch/arm64/kernel/machine_kexec.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/arm64/kernel/machine_kexec.c b/arch/arm64/kernel/machine_kexec.c index 779a80046066..481f54a866c5 100644 --- a/arch/arm64/kernel/machine_kexec.c +++ b/arch/arm64/kernel/machine_kexec.c @@ -18,6 +18,7 @@ #include <asm/cacheflush.h> #include <asm/cpu_ops.h> +#include <asm/memory.h> #include <asm/mmu.h> #include <asm/mmu_context.h> #include <asm/page.h> @@ -351,3 +352,13 @@ void crash_free_reserved_phys_range(unsigned long begin, unsigned long end) } } #endif /* CONFIG_HIBERNATION */ + +void arch_crash_save_vmcoreinfo(void) +{ + VMCOREINFO_NUMBER(VA_BITS); + /* Please note VMCOREINFO_NUMBER() uses "%d", not "%x" */ + vmcoreinfo_append_str("NUMBER(kimage_voffset)=0x%llx\n", + kimage_voffset); + vmcoreinfo_append_str("NUMBER(PHYS_OFFSET)=0x%llx\n", + PHYS_OFFSET); +} |