[CRIU] [PATCH 0/4] vdso: Make it arch specific

[Christopher Covington]

Hi Cyrill,

On 05/26/2014 03:50 AM, Cyrill Gorcunov wrote:
>   New linux kernels (starting from 3.16 presumably) will
> have quite reworked vDSO format so that our "common" parser
> won'y work anymore. Thus every architecture should implement
> own vdso parsing and handling.

I copied the x86 VDSO code (903 lines) into arch/aarch64 then modified it
until it worked on a 3.16.0-rc4+ kernel. Below is the diffstat.

M Makefile                                       +6, -0
M arch/aarch64/include/asm/parasite-syscall.h    +1, -1
M arch/aarch64/include/asm/vdso.h                +7, -8
A arch/aarch64/intraprocedure.S                  17 lines
M arch/aarch64/vdso-pie.c                        +5, -17
M arch/aarch64/vdso.c                            +6, -0
M pie/Makefile                                   +3, -0
M test/zdtm/live/static/vdso01.c                 +33, -38

Total                                            +78, -64

I think this illustrates that there are several hundred lines of code that
could be common between architectures. If you're willing to go back to a
mostly common code layout, what is the best way to proceed.

Christopher

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