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(parent: be20f6b) | patch
PCI/IOV: Skip BAR sizing for VFs
authorKarimAllah Ahmed <karahmed@amazon.de>
Sat, 3 Mar 2018 04:33:10 +0000 (05:33 +0100)
committerBjorn Helgaas <bhelgaas@google.com>
Mon, 19 Mar 2018 19:55:17 +0000 (14:55 -0500)
commitbf4447fd1cb6158b60bd60a79998e1d029d31e68
treeffc1c818597a76f15c82f2a5d14f6fd6f07a8794tree | snapshot
parentbe20f6b063f51cd77d071b803ee24f23200dc559commit | diff
PCI/IOV: Skip BAR sizing for VFs

Per PCIe r4.0, sec 9.3.4.1.11, the BAR registers in VF config space are all
RO Zero, so skip sizing them.

This is an optimization when enabling SR-IOV on a device with many VFs.

Suggested-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: KarimAllah Ahmed <karahmed@amazon.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
drivers/pci/probe.c diff | blob | history
Domain: System / Kernel;