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58bc2453ab
Rather than treating multicast registers as 'i915_reg_t' let's define them as a completely new type. This will allow the compiler to help us make sure we're using multicast-aware functions to operate on multicast registers. This plan does break down a bit in places where we're just maintaining heterogeneous lists of registers (e.g., various MMIO whitelists used by perf, GVT, etc.) rather than performing reads/writes. We only really care about the offset in those cases, so for now we can "cast" the registers as non-MCR, leaving us with a list of i915_reg_t's, but we may want to look for better ways to store mixed collections of i915_reg_t and i915_mcr_reg_t in the future. v2: - Add TLB invalidation registers v3: - Make type checking of i915_mmio_reg_offset() stricter. It will accept either i915_reg_t or i915_mcr_reg_t, but will now raise a compile error if any other type is passed, even if that type contains a 'reg' field. (Jani) - Drop a ton of GVT changes; allowing i915_mmio_reg_offset() to take either an i915_reg_t or an i915_mcr_reg_t means that the huge lists of MMIO_D*() macros used in GVT will continue to work without modification. We need only make changes to structures that have an explicit i915_reg_t in them now. Cc: Jani Nikula <jani.nikula@linux.intel.com> Signed-off-by: Matt Roper <matthew.d.roper@intel.com> Reviewed-by: Balasubramani Vivekanandan <balasubramani.vivekanandan@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20221014230239.1023689-13-matthew.d.roper@intel.com |
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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.