[Crash-utility] ARM support for CONFIG_SPARSEMEM: (wasRe:DDimage)

[takuo.koguchi.sw at hitachi.com]

Mika,

>Do you happen to have CONFIG_HIGHPTE enabled?
No.

Takuo
---------
>On Thu, May 26, 2011 at 11:53 AM,  <takuo.koguchi.sw at hitachi.com> wrote:
>> Hi Mika,
>>
>>>Please check your platforms
>>>arch/arm/mach-<yourmach>/include/mach/memory.h and set both
>>>_SECTION_SIZE_BITS and _MAX_PHYSMEM_BITS to be the same as defined in
>>>the header. If crash works with the correct values, we just need to
>> Both SECTION_SIZE_BITS 28 and MAX_PHYSMEM_BITS 32 are defined correctly in the kernel header and defs.h.
>> Although, still I got
>>>> crash: invalid kernel virtual address: f67f000  type: "page table"
>
>Do you happen to have CONFIG_HIGHPTE enabled?
>
>>
>> It might come form my vmcore file's incorrectness.
>> Currently my vmcore contains the following,
>> Program Headers:
>>  Type           Offset   VirtAddr   PhysAddr   FileSiz MemSiz  Flg Align
>>  NOTE           0x000074 0x00000000 0x00000000 0x00000 0x00000     0
>>  LOAD           0x000074 0xc0000000 0x00000000 0x20000000 0x20000000 RWE 0
>>
>> But actual mapping is,
>> Virtual 0xc0000000-0xcfffffff corresponds Physical 0x00000000-0x0fffffff
>> and
>> Virtual 0xd0000000-0xdfffffff corresponds Physical 0x40000000-0x4fffffff
>>
>> Then I tried to prepend the following header instead,
>> Program Headers:
>>  Type           Offset   VirtAddr   PhysAddr   FileSiz MemSiz  Flg Align
>>  NOTE           0x000094 0x00000000 0x00000000 0x00000 0x00000     0
>>  LOAD           0x000094 0xc0000000 0x00000000 0x10000000 0x10000000 RWE 0
>>  LOAD           0x10000094 0xd0000000 0x40000000 0x10000000 0x10000000 RWE 0
>>
>> This time crash does not recognize the vmcore file.
>>
>> Perhaps I have to change VTOP/PTOV macros accordingly?
>
>It should be enough if you have machdep->machspec->phys_base set to
>correct value, which is 0 in your case. You can see this by running
>'crash -d1 ...'. Also if possible, can you post the full output here
>so that we can analyze it further.
>
>--
>Crash-utility mailing list
>Crash-utility at redhat.com
>https://www.redhat.com/mailman/listinfo/crash-utility
>