Commit 20a16624 authored by AKASHI Takahiro's avatar AKASHI Takahiro Committed by Catalin Marinas

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: default avatarAKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: default avatarJames Morse <james.morse@arm.com>
Acked-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent 78fd584c
...@@ -18,6 +18,7 @@ ...@@ -18,6 +18,7 @@
#include <asm/cacheflush.h> #include <asm/cacheflush.h>
#include <asm/cpu_ops.h> #include <asm/cpu_ops.h>
#include <asm/memory.h>
#include <asm/mmu.h> #include <asm/mmu.h>
#include <asm/mmu_context.h> #include <asm/mmu_context.h>
#include <asm/page.h> #include <asm/page.h>
...@@ -351,3 +352,13 @@ void crash_free_reserved_phys_range(unsigned long begin, unsigned long end) ...@@ -351,3 +352,13 @@ void crash_free_reserved_phys_range(unsigned long begin, unsigned long end)
} }
} }
#endif /* CONFIG_HIBERNATION */ #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);
}
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment