[PATCH] makedumpfile: Support ARM64

[Azriel Samson]

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