Documentation/features/arch-support.txt

   1
   2 For generic kernel features that need architecture support, the
   3 arch-support.txt file in each feature directory shows the arch
   4 support matrix, for all upstream Linux architectures.
   5
   6 The meaning of entries in the tables is:
   7
   8     | ok |  # feature supported by the architecture
   9     |TODO|  # feature not yet supported by the architecture
  10     | .. |  # feature cannot be supported by the hardware
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