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05d70ebf74
With HW PTW supported, invalid TLB is not added when page fault happens. But for EXCCODE_TLBM exception, stale TLB may exist because of the last read access. Thus TLB flush operation is necessary for the EXCCODE_TLBM exception, but not necessary for other tyeps of page fault exceptions. With SW PTW supported, invalid TLB is added in the TLB refill exception. TLB flush operation is necessary for all types of page fault exceptions. Here remove unnecessary TLB flush opereation with HW PTW supported. Signed-off-by: Bibo Mao <maobibo@loongson.cn> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
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 reStructuredText 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.