linux-kernel - RE: [Patch v3 1/3] Drivers: hv: vmbus: add support to ignore certain PCIE devices

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Date:   Fri, 16 Jul 2021 14:33:52 +0000
From:   Michael Kelley <mikelley@...rosoft.com>
To:     "longli@...uxonhyperv.com" <longli@...uxonhyperv.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>
CC:     Long Li <longli@...rosoft.com>, KY Srinivasan <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        Wei Liu <wei.liu@...nel.org>, Dexuan Cui <decui@...rosoft.com>
Subject: RE: [Patch v3 1/3] Drivers: hv: vmbus: add support to ignore certain
 PCIE devices

From: longli@...uxonhyperv.com <longli@...uxonhyperv.com> Sent: Tuesday, July 13, 2021 7:45 PM
> 
> Under certain configurations when Hyper-v presents a device to VMBUS, it
> may have a VMBUS channel and a PCIe channel. The PCIe channel is not used
> in Linux and does not have a backing PCIE device on Hyper-v. For such
> devices, ignore those PCIe channels so they are not getting probed by the
> PCI subsystem.
> 
> Cc: K. Y. Srinivasan <kys@...rosoft.com>
> Cc: Haiyang Zhang <haiyangz@...rosoft.com>
> Cc: Stephen Hemminger <sthemmin@...rosoft.com>
> Cc: Wei Liu <wei.liu@...nel.org>
> Cc: Dexuan Cui <decui@...rosoft.com>
> Signed-off-by: Long Li <longli@...rosoft.com>
> ---
>  drivers/hv/channel_mgmt.c | 48 +++++++++++++++++++++++++++++++++++++++++------
>  1 file changed, 42 insertions(+), 6 deletions(-)
> 

Reviewed-by: Michael Kelley <mikelley@...rosoft.com>