[PATCH] makedumpfile: Support ARM64

Pratyush Anand panand at redhat.com
Thu Aug 20 20:44:33 PDT 2015

Hi Sameer,

On 20/08/2015:04:11:24 PM, sgoel at codeaurora.org wrote:
> Hi Pratush,
> I have made the change now.
> The reason for changing the KVBASE was to get non zero value for mem_map
> as seen from the crash tool. If KVBASE stays at page offset we do not get
> into the function that looks for the free pages.

OK.. I made the change for KVBASE and pushed it to my github repo.

> After looking at the page usage using the crash tool it seems that ~80% of
> the pages are free.
> Maybe there is something else that I am missing here. The page look up
> fails when writing the crashdump file.

Not sure if you can share the output with --message-level 31, but do you see any
thing susceptible there?

# makedumpfile -l --message-level 31 rawvmcore makedumpfilevmcore

Can you compare "Virtual kernel memory layout:" print of Linux kernel boot with
makedumpfile print for page_offset, vmalloc_start, vmemmap_start etc, and see if
they match?

They should match.


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