On 04/21/15 at 10:12am, Pratyush Anand wrote:
On Monday 20 April 2015 12:54 PM, Baoquan He wrote:
>On 04/16/15 at 10:17pm, Pratyush Anand wrote:
>>>This patch adds support to use binary image ie arch/arm64/boot/Image.
>>>
>>>Binary image does not have sufficient knowledge to extract page offset
>>>information, which is needed by kexec tool. Use a new command parameter
>>>--page-offset, so that user can provide page offset information for
>>>liner mapping.
>>>
>>>Signed-off-by: Pratyush Anand<panand(a)redhat.com>
>>>---
>Seems there's a function get_kernel_page_offset used to get page_offset
>automatically in arm. arm64 should have it either.
>
>
ARM still takes user option for --page-offset in user_page_offset
variable and then cross check that value with one found in
/proc/kallsyms.
Well, this looks good. Try --page-offset and then fetch it in
/proc/kallsysms if not specificed by user. ARM64 should have this too.
May be for ARM64, we can read it like "value of symbol _text in
/proc/kallsyms & 0xfffffffffff00000".
~Pratyush
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