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powerpc/pci: Add PCI resource alignment documentation
authorWei Yang <weiyang@linux.vnet.ibm.com>
Wed, 25 Mar 2015 08:24:01 +0000 (16:24 +0800)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Tue, 31 Mar 2015 02:02:38 +0000 (13:02 +1100)
In order to enable SRIOV on PowerNV platform, the PF's IOV BAR needs to be
adjusted:

    1. size expanded
    2. aligned to M64BT size

This patch documents this change on the reason and how.

[bhelgaas: reformat, clarify, expand]
Signed-off-by: Wei Yang <weiyang@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

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