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Date: Mon, 13 May 2019 08:37:54 -0600 From: Keith Busch <kbusch@...nel.org> To: Mario.Limonciello@...l.com Cc: keith.busch@...el.com, hch@....de, sagi@...mberg.me, linux-nvme@...ts.infradead.org, rafael@...nel.org, linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org, kai.heng.feng@...onical.com Subject: Re: [PATCH] nvme/pci: Use host managed power state for suspend On Mon, May 13, 2019 at 02:24:41PM +0000, Mario.Limonciello@...l.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.
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