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commit14eb0cb4e9upstream. In theory a context can be destroyed and a new one allocated at the same address, making the pointer comparision to detect when we don't need to update the current pagetables invalid. Instead assign a sequence number to each context on creation, and use this for the check. Fixes:84c31ee16f("drm/msm/a6xx: Add support for per-instance pagetables") Signed-off-by: Rob Clark <robdclark@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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.