linux-kernel - Re: [PATCH 0/2] PCI/IOV: Resolve regression in SR-IOV VF cfg

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Message-ID: <20190703135941.GL128603@google.com>
Date:   Wed, 3 Jul 2019 08:59:41 -0500
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Alex Williamson <alex.williamson@...hat.com>
Cc:     linux-pci@...r.kernel.org,
        Kuppuswamy Sathyanarayanan 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>,
        KarimAllah Ahmed <karahmed@...zon.de>,
        Hao Zheng <yinhe@...ux.alibaba.com>,
        linux-kernel@...r.kernel.org, nanhai.zou@...ux.alibaba.com,
        quan.xu0@...ux.alibaba.com, ashok.raj@...el.com,
        keith.busch@...el.com, mike.campin@...el.com
Subject: Re: [PATCH 0/2] PCI/IOV: Resolve regression in SR-IOV VF cfg_size

On Thu, Jun 13, 2019 at 04:56:57PM -0600, Alex Williamson wrote:
> The commit reverted in the first patch introduced a regression where
> only the first VF reports the correct config space size, subsequent VFs
> report 256 bytes of config space.  Replace this in the second patch
> with an assumption that all VFs support extended config space by virtue
> of the SR-IOV spec requiring a PCIe capability and reachability of the
> PF extended config space already being proven by the existence of the
> VF.  Thanks,
> 
> Alex
> 
> ---
> 
> Alex Williamson (2):
>       Revert: PCI/IOV: Use VF0 cached config space size for other VFs
>       PCI/IOV: Assume SR-IOV VFs support extended config space.

Applied to pci/virtualization for v5.3 with Kuppuswamy's reviewed-by on
2/2, thanks!

>  drivers/pci/iov.c   |    2 --
>  drivers/pci/pci.h   |    1 -
>  drivers/pci/probe.c |   26 ++++++++++++--------------
>  3 files changed, 12 insertions(+), 17 deletions(-)