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43a8f684b6
Annoyingly, struct_mutex was not entirely eliminated from the reset pathway; for reasons of its own, intel_display_resume() requires struct_mutex to prepare the planes it already captured. To avoid the immediate problem of a deadlock between the struct_mutex and the reset srcu, we have to acquire the reset_lock before struct_mutex in i915_gem_fault(). Now any wait underneath struct_mutex will result us in having to forcibly reset all inflight rendering, less than ideal, but better than a deadlock (and will do for the short term). Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190221102924.13442-1-chris@chris-wilson.co.uk
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.