[CRIU] [PATCH 12/12] x86: cpu -- Require compatibility on instruction level by default

Dmitry Safonov 0x7f454c46 at gmail.com
Thu Aug 30 16:16:56 MSK 2018


2018-08-30 12:00 GMT+01:00 Cyrill Gorcunov <gorcunov at gmail.com>:
> For a long time we've been demanding from cpus to be compatible
> on fpu frame level, but growing list of cpu features triggers
> inability for restored programs to proceed after restore due
> to specific intructions execution (such as avx2). Note the
> fpu frame may carry same size but not on instruction level
> where SIGILL may happen after the restore.
>
> Thus lets require instruction mode to be set and verified by default.
> Still one can drop this option via command line or rpc request.
>
> Signed-off-by: Cyrill Gorcunov <gorcunov at gmail.com>

Reviewed-by: Dmitry Safonov <0x7f454c46 at gmail.com>

Thanks,
             Dmitry


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