[CRIU] Merged some code from criu-dev into master

[Laurent Dufour]

On 06/09/2016 18:38, Pavel Emelyanov wrote:
> Hello,
> 
> I've pulled some features that seem to work in criu-dev into master branch.
> 
> Eugene, the code for shmem changes tracking conflicted with the lack of
> lazy pages in master :) Would you please, check that I resolved it correctly.
> 
> Dima, Laurent, the PMEM patches depended on c220f6da (sigframe: prepare macro 
> helpers for two sigframes) which in turn sat in the x32 set, so I ported one
> too. Would you also please check that I didn't break things.

Hi Pavel,

Will testing the TM C/R feature, I'm always hitting this BUG() call on
ppc64 :

(00.009319) Error (criu/arch/ppc64/crtools.c:755): BUG at
criu/arch/ppc64/crtools.c:755

I'm still investigating but it seems that there is a miss in the caller
of sigreturn_prep_fpu_frame()...

Cheers,
Laurent.