Re: [Resend][PATCH] x86/power/64: Always create temporary identity mapping correctly

On Wed, 10 Aug 2016, Rafael J. Wysocki wrote:

For the lack of better ideas, below is a patch to try.

It avoids the possible issue with the restore kernel's identity mapping overlap
with restore_jump_address by creating special super-simple page tables just
for the final jump to the image kernel.

It is on top of the $subject patch.  My test box still works with this applied,
but then it worked without it as well.

If it doesn't help, the identity mapping created by set_up_temporary_mappings()
is still not adequate for some reason most likely and we'll need to find out
why.

Unfortunately, still with $subject patch + this one, triple fault and 
reboot after reading the hibernation image.

Due to being slightly out of ideas currently, I'll play a little bit more 
with the relocation offsets to see whether that makes any difference.

-- 
Jiri Kosina
SUSE Labs