[PATCH] makedumpfile: Support ARM64

[Azriel Samson]

Adding Sameer as he has a few questions on kvbase.

> Hi Pratyush,
>
> I was able to run makedumpfile with "-d 31" but the dumpfile was
> approximately the same size as that of vmcore (~16GB).
>
> Answers inline.
>
>> Hi Azriel,
>>
>> On 01/07/2015:06:42:46 PM, Azriel Samson wrote:
>>> Hi Pratyush,
>>>
>>> I am working with Timur and we are testing your version of
>>> makedumpfile.
>>
>> Thanks for testing.
>>
>>> The tool is unable to get the kernel version and quits from
>>> check_release().
>>
>> Couple of questions:
>>
>> 1. Can you please let me know VA_BITS configured in your case?
> VA_BITS=39
>> 2. Do you expect any regions other than vmalloc, vmemmap or modules,
>> which are not directly mapped and their physical address need to be
>> found from swapper_pg_dir?
> No
>> In my vmcore, I did not had any address where
>> is_vtop_from_page_table_arm64 would be true. So, vtop_arm64 function
>> has been only cross checked logically. So,
>> a) Please put a print in vtop_arm64 and check if control goes there?
>> b) if yes, then please print vaddr and paddr at the end of vtop_arm64
>> and see if that is correct. If not we need to debug vtop_arm64.
> I still need to try this. Will get back when I do.
>> ~Pratyush
>>
>>>
>>> I tried to debug the vmcore file with gdb but the file looks corrupt.
>>>
>>> Let me know if you have any ideas on what could be wrong?
>>>
>>> > Hi Timur,
>>> >
>>> > On 23/06/2015:10:36:03 PM, Timur Tabi wrote:
>>> >> Pratyush Anand wrote:
>>> >> >I can try to find out some time in weekend to refactor arm64 code
>>> >> >and then add 3 level, 4K support. May be I will need a Tested-by.
>>> >>
>>> >> We'd be more than happy to test any code from you promptly.  We're
>>> eager
>>> >> to
>>> >> get this to work.
>>> >
>>> > I have done the changes, hopefully it should work, but have not
>>> > tested. Let me know, if it works will send them as formal patches
>>> > to upstream.
>>> >
>>> > https://github.com/pratyushanand/makedumpfile.git : arm64_support
>>> > (9b95423bcea0)
>>> >
>>> > ~Pratyush
>>> >
>>>
>>> --
>>> Thanks,
>>> Azriel Samson
>>> Qualcomm Innovation Center, Inc.
>>> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora
>>> Forum, 
>>> a Linux Foundation Collaborative Project
>>
>
>
> --
> Thanks,
> Azriel Samson
> Qualcomm Innovation Center, Inc.
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora
> Forum, 
> a Linux Foundation Collaborative Project
>


-- 
Thanks,
Azriel Samson
Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, 
a Linux Foundation Collaborative Project