linux-kernel - Re: [PATCH v5 0/4] Improve s0ix flows for systems i219LM

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Date:   Tue, 15 Dec 2020 13:48:37 +0100
From:   Hans de Goede <hdegoede@...hat.com>
To:     Mario Limonciello <mario.limonciello@...l.com>,
        Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
        Tony Nguyen <anthony.l.nguyen@...el.com>,
        intel-wired-lan@...ts.osuosl.org
Cc:     linux-kernel@...r.kernel.org, Netdev <netdev@...r.kernel.org>,
        Alexander Duyck <alexander.duyck@...il.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Sasha Netfin <sasha.neftin@...el.com>,
        Aaron Brown <aaron.f.brown@...el.com>,
        Stefan Assmann <sassmann@...hat.com>,
        David Miller <davem@...emloft.net>, darcari@...hat.com,
        Yijun.Shen@...l.com, Perry.Yuan@...l.com,
        anthony.wong@...onical.com
Subject: Re: [PATCH v5 0/4] Improve s0ix flows for systems i219LM

Hi,

On 12/14/20 8:29 PM, Mario Limonciello wrote:
> commit e086ba2fccda ("e1000e: disable s0ix entry and exit flows for ME systems")
> disabled s0ix flows for systems that have various incarnations of the
> i219-LM ethernet controller.  This was done because of some regressions
> caused by an earlier
> commit 632fbd5eb5b0e ("e1000e: fix S0ix flows for cable connected case")
> with i219-LM controller.
> 
> Per discussion with Intel architecture team this direction should be changed and
> allow S0ix flows to be used by default.  This patch series includes directional
> changes for their conclusions in https://lkml.org/lkml/2020/12/13/15.
> 
> Changes from v4 to v5:
>  - If setting S0ix to enabled in ethtool examine the hardware generation.
>    If running on hardware older than Cannon Point return an error.
>  - Increase ULP timeout to 2.5 seconds, but show a warning after 1 second.

Thank you. I've given v5 a test on a Lenovo X1 Carbon 8th gen (AMT capable)
and things work fine there with v5:

Tested-by: Hans de Goede <hdegoede@...hat.com>

Regards,

Hans




> Changes from v3 to v4:
>  - Drop patch 1 for proper s0i3.2 entry, it was separated and is now merged in kernel
>  - Add patch to only run S0ix flows if shutdown succeeded which was suggested in
>    thread
>  - Adjust series for guidance from https://lkml.org/lkml/2020/12/13/15
>    * Revert i219-LM disallow-list.
>    * Drop all patches for systems tested by Dell in an allow list
>    * Increase ULP timeout to 1000ms
> Changes from v2 to v3:
>  - Correct some grammar and spelling issues caught by Bjorn H.
>    * s/s0ix/S0ix/ in all commit messages
>    * Fix a typo in commit message
>    * Fix capitalization of proper nouns
>  - Add more pre-release systems that pass
>  - Re-order the series to add systems only at the end of the series
>  - Add Fixes tag to a patch in series.
> 
> Changes from v1 to v2:
>  - Directly incorporate Vitaly's dependency patch in the series
>  - Split out s0ix code into it's own file
>  - Adjust from DMI matching to PCI subsystem vendor ID/device matching
>  - Remove module parameter and sysfs, use ethtool flag instead.
>  - Export s0ix flag to ethtool private flags
>  - Include more people and lists directly in this submission chain.
> 
> 
> Mario Limonciello (4):
>   e1000e: Only run S0ix flows if shutdown succeeded
>   e1000e: bump up timeout to wait when ME un-configures ULP mode
>   Revert "e1000e: disable s0ix entry and exit flows for ME systems"
>   e1000e: Export S0ix flags to ethtool
> 
>  drivers/net/ethernet/intel/e1000e/e1000.h   |  1 +
>  drivers/net/ethernet/intel/e1000e/ethtool.c | 46 ++++++++++++++++
>  drivers/net/ethernet/intel/e1000e/ich8lan.c | 16 ++++--
>  drivers/net/ethernet/intel/e1000e/netdev.c  | 59 ++++-----------------
>  4 files changed, 70 insertions(+), 52 deletions(-)
> 
> --
> 2.25.1
>