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Date:   Mon, 13 May 2019 08:37:54 -0600
From:   Keith Busch <kbusch@kernel.org>
To:     Mario.Limonciello@dell.com
Cc:     keith.busch@intel.com, hch@lst.de, sagi@grimberg.me,
        linux-nvme@lists.infradead.org, rafael@kernel.org,
        linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
        kai.heng.feng@canonical.com
Subject: Re: [PATCH] nvme/pci: Use host managed power state for suspend
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On Mon, May 13, 2019 at 02:24:41PM +0000, Mario.Limonciello@dell.com wrote:
> This was not a disk with HMB, but with regard to the HMB I believe it needs to be
> removed during s0ix so that there isn't any mistake that SSD thinks it can access HMB
> memory in s0ix.

Is that really the case, though? Where may I find that DMA is not
allowed in this state? I just want an authoritative reference to attach
to the behavior.