This patch set resolves issues with running fake numa on x86_64. We
have also extended the command line numa=fake=NUM command line option to
specify different size nodes. The default NODES_SHIFT is also
incremented from 6 to 8 to allow MAX_NUM_NODES to be 256.
Patch [1/4]: Add the e820_hole_size to give the size of hole in a given
address range
Patch [2/4]: Increase the NODE_SHIFT from 6 to 8.
Patch [3/4]: Fix the existing numa=fake so that ioholes are
appropriately configured. Currently machines that have sizeable IO
holes don't work with numa=fake>4.
Patch[4/4]: Extend the command line so that user can specify different
size nodes on a command line.
Signed-off-by: David Rientjes <[email protected]>
Signed-off-by: Paul Menage <[email protected]>
Signed-off-by: Rohit Seth <[email protected]>
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