linux-kernel - Re: [PATCH v2] nvme: Favor D3cold for suspend if NVMe device supports it

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Message-ID: <20210419065027.GA19201@lst.de>
Date:   Mon, 19 Apr 2021 08:50:27 +0200
From:   Christoph Hellwig <hch@....de>
To:     Kai-Heng Feng <kai.heng.feng@...onical.com>
Cc:     kbusch@...nel.org, axboe@...com, hch@....de, sagi@...mberg.me,
        Alex Deucher <alexander.deucher@....com>,
        Prike Liang <Prike.Liang@....com>,
        Shyam Sundar S K <Shyam-sundar.S-k@....com>,
        "open list:NVM EXPRESS DRIVER" <linux-nvme@...ts.infradead.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] nvme: Favor D3cold for suspend if NVMe device
 supports it

On Fri, Apr 16, 2021 at 05:13:44PM +0800, Kai-Heng Feng wrote:
> On AMD platforms that use s2idle, NVMe timeouts on s2idle resume,
> because their SMU FW may cut off NVMe power during sleep.

We're already have a discussion on a proper quirk for thse broken
platforms on the linux-nvme list, please take part in that discussion.