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csky: Reconstruct VDSO framework

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Reconstruct vdso framework to support future vsyscall,
vgettimeofday features. These are very important features to reduce
system calls into the kernel for performance improvement.

The patch is reference RISC-V's

Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Cc: Palmer Dabbelt <palmerdabbelt@google.com>
This commit is contained in:
Guo Ren 2021-01-04 03:37:07 +00:00
commit 87f3248cdb
13 changed files with 269 additions and 89 deletions
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