Rafael J. Wysocki wrote:

> Thanks.
> 
>> http://www.dresco.co.uk/debug/resume_from_disk.jpg
> 
> This one indicates that page tables are corrupted in the restore loop, just
> like it used to happen on x86_64 some time ago.
> 
> Can you confirm that it doesn't happen if HIGHMEM64 is not set?

Confirmed, only happens with HIGHMEM64G.

> 
>> http://www.dresco.co.uk/debug/suspend_e820_patch.jpg
> 
> This one is really strange, like a miscompilation or something.
> 
> Could you identify which line of code corresponds to count_data_pages+0x38
> (using gdb)?

Would be happy to, may need a pointer in the right direction though?

Btw, I also raised the question on lkml, however I had to post from 
gmane so couldn't copy in this list. Someone else has confirmed the same 
issue on an X60s - 
http://marc.theaimsgroup.com/?l=linux-kernel&m=115683494518851&w=2

Regards,
Jon.

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