From: hch@lst.de (Christoph Hellwig)
Subject: [PATCHv2 6/6] nvme-pci: Use host managed power state for suspend
Date: Fri, 17 May 2019 11:35:16 +0200 [thread overview]
Message-ID: <20190517093516.GA17006@lst.de> (raw)
In-Reply-To: <CAJZ5v0iL+ERE4Yy5yO8U2no194sRkvqNZHh5HsZXKvvHbxtk+g@mail.gmail.com>
On Fri, May 17, 2019@11:17:52AM +0200, Rafael J. Wysocki wrote:
> AFAICS, using DMA while creating a hibernation snapshot image of
> memory would not be a good idea, so the host memory buffer should be
> disabled during the "freeze" stage or hibernation (and it can be
> re-enabled when that stage is complete).
Once we'd disable the HMB the harm is done, so no point in re-enabling
it. What would this mean in terms of ops? Only disable in
freeze_noirq? Or stick to the simple ops and find another helper
that indicates we are doing a hibernation?
next prev parent reply other threads:[~2019-05-17 9:35 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-15 16:36 [PATCH 1/6] nvme-pci: Fix controller freeze wait disabling Keith Busch
2019-05-15 16:36 ` [PATCH 2/6] nvme-pci: Don't disable on timeout in reset state Keith Busch
2019-05-16 3:07 ` Ming Lei
2019-05-16 14:33 ` Keith Busch
2019-05-16 6:27 ` Christoph Hellwig
2019-05-15 16:36 ` [PATCH 3/6] nvme-pci: Unblock reset_work on IO failure Keith Busch
2019-05-16 3:13 ` Ming Lei
2019-05-16 14:14 ` Keith Busch
2019-05-17 2:31 ` Ming Lei
2019-05-16 6:28 ` Christoph Hellwig
2019-05-15 16:36 ` [PATCH 4/6] nvme-pci: Sync queues on reset Keith Busch
2019-05-16 3:34 ` Ming Lei
2019-05-16 6:29 ` Christoph Hellwig
2019-05-16 14:08 ` Keith Busch
2019-05-16 13:43 ` Minwoo Im
2019-05-15 16:36 ` [PATCH 5/6] nvme: Export get and set features Keith Busch
2019-05-16 6:26 ` Christoph Hellwig
2019-05-16 13:47 ` Minwoo Im
2019-05-15 16:36 ` [PATCHv2 6/6] nvme-pci: Use host managed power state for suspend Keith Busch
2019-05-15 19:33 ` Mario.Limonciello
2019-05-15 19:34 ` Keith Busch
2019-05-15 19:43 ` Mario.Limonciello
2019-05-16 6:25 ` Christoph Hellwig
2019-05-16 14:24 ` Keith Busch
2019-05-17 9:08 ` Christoph Hellwig
2019-05-16 9:29 ` Rafael J. Wysocki
2019-05-16 14:26 ` Keith Busch
2019-05-16 18:27 ` Kai-Heng Feng
2019-05-16 18:33 ` Mario.Limonciello
2019-05-16 19:38 ` Keith Busch
2019-05-16 20:25 ` Rafael J. Wysocki
2019-05-16 20:39 ` Keith Busch
2019-05-16 20:56 ` Rafael J. Wysocki
2019-05-17 8:39 ` Rafael J. Wysocki
2019-05-17 9:05 ` Christoph Hellwig
2019-05-17 9:17 ` Rafael J. Wysocki
2019-05-17 9:35 ` Christoph Hellwig [this message]
2019-05-17 10:34 ` Rafael J. Wysocki
2019-05-22 6:47 ` Kai Heng Feng
2019-05-22 15:52 ` Christoph Hellwig
2019-05-22 16:02 ` Keith Busch
2019-05-22 16:35 ` Mario.Limonciello
2019-05-22 16:56 ` Keith Busch
2019-05-22 23:08 ` Keith Busch
2019-05-23 15:27 ` Keith Busch
2019-05-17 9:22 ` Kai-Heng Feng
2019-05-17 9:32 ` Rafael J. Wysocki
2019-05-16 20:24 ` Rafael J. Wysocki
2019-05-16 2:43 ` [PATCH 1/6] nvme-pci: Fix controller freeze wait disabling Ming Lei
2019-05-17 18:40 ` Keith Busch
2019-05-16 6:27 ` Christoph Hellwig
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