powerpc/pseries/cmm: Simulation mode
Let's allow to test the implementation without needing HW support. When "simulate=1" is specified when loading the module, we bypass all HW checks and HW calls. The sysfs file "simulate_loan_target_kb" can be used to simulate HW requests. The simualtion mode can be activated using: modprobe cmm debug=1 simulate=1 And the requested loan target can be changed using: echo X > /sys/devices/system/cmm/cmm0/simulate_loan_target_kb Signed-off-by:David Hildenbrand <david@redhat.com> Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20191031142933.10779-11-david@redhat.com
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