[CRIU] [PATCH v2 00/12] x86: cpu -- Rework feature testing

[Andrey Vagin]

Applied, thanks!

On Thu, Aug 30, 2018 at 02:00:15PM +0300, Cyrill Gorcunov wrote:
>  - Make --cpu-cap options being explicitly bitmask based
>  - Save xsave frame sizes into image
>  - Require xsave frames to exactly match when testing
> 
> All this needed to detect a situation where container is migrated
> from one machine to another where xsave frames have different size.
> We already hit the problem where application (for example libc) calls
> for xsave directly and when destination machine is more powerful the
> new bigger size of the frame may override the memory causing programs
> to misbehave.
> 
> v2:
>  - Make instruction capability mode to be set by default
> 
> Cyrill Gorcunov (12):
>   x86: cpu -- Save xsave frame sizes in image
>   x86: cpu -- Make cpu_dump_cpuinfo more readable
>   x86: cpu -- Use bitwise operator for option check
>   x86: cpu -- Move xsave testing into fpu capability block
>   x86: cpu -- Move strict capability mode into own block
>   x86: cpu -- Use special bit for image manipulation
>   x86: cpu -- Update default cpu-cap option
>   x86: cpu -- Add more detailed mode description
>   x86: cpu -- Drop no longer needed early exit from cpu_validate_features
>   x86: cpu -- Don't exit early if --cpu-cap=ins specified
>   x86: cpu -- Use native uint_x types
>   x86: cpu -- Require compatibility on instruction level by default
> 
>  Documentation/criu.txt    |  14 +++--
>  criu/arch/x86/cpu.c       | 106 ++++++++++++++++++++++++--------------
>  criu/config.c             |   4 ++
>  criu/cr-dump.c            |   2 +-
>  criu/cr-restore.c         |   2 +-
>  criu/cr-service.c         |   4 +-
>  criu/include/cr_options.h |  13 ++---
>  images/cpuinfo.proto      |   2 +
>  8 files changed, 97 insertions(+), 50 deletions(-)
> 
> -- 
> 2.17.1
>