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

From: Keith Busch
Date: Mon May 13 2019 - 10:44:51 EST

On Mon, May 13, 2019 at 02:24:41PM +0000, Mario.Limonciello@xxxxxxxx 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.