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SubjectRe: [PATCH 2/4 v2] PCI: support ARI capability
* Zhao, Yu <yu.zhao@intel.com>:
> Support Alternative Routing-ID Interpretation (ARI), which increases the number of functions that can be supported by a PCIe endpoint. ARI is required by SR-IOV.
>
> PCI-SIG ARI specification can be found at http://www.pcisig.com/specifications/pciexpress/specifications/ECN-alt-rid-interpretation-070604.pdf
>
> Signed-off-by: Yu Zhao <yu.zhao@intel.com>
> Signed-off-by: Eddie Dong <eddie.dong@intel.com>
>
> ---
> drivers/pci/Kconfig | 7 ++++
> drivers/pci/Makefile | 2 +
> drivers/pci/ari.c | 71 ++++++++++++++++++++++++++++++++++++++++++++++
> drivers/pci/pci.h | 8 +++++
> drivers/pci/probe.c | 3 ++
> include/linux/pci.h | 25 ++++++++++++++++
> include/linux/pci_regs.h | 14 +++++++++
> 7 files changed, 130 insertions(+), 0 deletions(-)
> create mode 100644 drivers/pci/ari.c
>
> diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
> index e1ca425..f43cc46 100644
> --- a/drivers/pci/Kconfig
> +++ b/drivers/pci/Kconfig
> @@ -50,3 +50,10 @@ config HT_IRQ
> This allows native hypertransport devices to use interrupts.
>
> If unsure say Y.
> +
> +config PCI_ARI
> + bool "PCI ARI support"
> + depends on PCI
> + default n
> + help
> + This enables PCI Alternative Routing-ID Interpretation.

This Kconfig help text is a little weak. Why not include the text
you've already written here:

Support Alternative Routing-ID Interpretation (ARI), which
increases the number of functions that can be supported by a PCIe
endpoint. ARI is required by SR-IOV.

In the Kconfig text, you might want to expand the SR-IOV acronym
too.

Thanks.

/ac



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