linux-kernel - Re: [PATCH] nvme/pci: Use host managed power state for suspend

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Message-ID: <20190513181618.GD15437@localhost.localdomain>
Date:   Mon, 13 May 2019 12:16:18 -0600
From:   Keith Busch <kbusch@...nel.org>
To:     Kai-Heng Feng <kai.heng.feng@...onical.com>
Cc:     sagi@...mberg.me, rafael@...nel.org, linux-pm@...r.kernel.org,
        Mario.Limonciello@...l.com, linux-kernel@...r.kernel.org,
        linux-nvme@...ts.infradead.org, keith.busch@...el.com,
        Christoph Hellwig <hch@....de>
Subject: Re: [PATCH] nvme/pci: Use host managed power state for suspend

On Tue, May 14, 2019 at 01:16:22AM +0800, Kai-Heng Feng wrote:
> Disabling HMB prior suspend makes my original patch work without memory
> barrier.
> 
> However, using the same trick on this patch still freezes the system during
> S2I.

Could you post your code, please?