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3b756ccddb
TLB invalidate didn't contain a barrier operation in csky cpu and we need to prevent previous PTW response after TLB invalidation instruction. Of cause, the ASID changing also needs to take care of the issue. CPU0 CPU1 =============== =============== set_pte sync_is() -> See the previous set_pte for all harts tlbi.vas -> Invalidate all harts TLB entry & flush pipeline Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.