powerpc/powernv/sriov: Explain how SR-IOV works on PowerNV

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SR-IOV support on PowerNV is a byzantine maze of hooks. I have no idea
how anyone is supposed to know how it works except through a lot of
stuffering. Write up some docs about the overall story to help out
the next sucker^Wperson who needs to tinker with it.

Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200722065715.1432738-6-oohall@gmail.com

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Oliver O'Halloran 2020-07-22 16:57:05 +10:00 • committed by Michael Ellerman

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arch/powerpc/platforms/powernv/pci-sriov.c

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