From: Christoph Hellwig <hch@lst.de>
To: Sagi Grimberg <sagi@grimberg.me>
Cc: Christoph Hellwig <hch@lst.de>, Keith Busch <kbusch@kernel.org>,
Chaitanya Kulkarni <kch@nvidia.com>,
Gerd Bayer <gbayer@linux.ibm.com>,
asahi@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
linux-nvme@lists.infradead.org
Subject: Re: [PATCH 01/12] nvme-pci: don't call nvme_init_ctrl_finish from nvme_passthru_end
Date: Wed, 9 Nov 2022 07:26:57 +0100 [thread overview]
Message-ID: <20221109062657.GD10528@lst.de> (raw)
In-Reply-To: <6f12b92c-a117-9c27-cd67-8c9fd9571a06@grimberg.me>
[note to self: the subject should say nvme instead of nvme-pci]
On Wed, Nov 09, 2022 at 04:55:47AM +0200, Sagi Grimberg wrote:
>> nvme_passthrough_end can race with a reset, so we should not call
>> nvme_init_ctrl_finish from here. Instead just log that the controller
>> capabilities might have changed.
>
> Can you explain here what is the problem caused by calling this from
> here?
I'll add it to the next version:
- stores to the cels xarray can race
- the new opal initialization can race
and in general it just updates random controller fields without
a reset, which I'm worried about hitting completely untested code.
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next prev parent reply other threads:[~2022-11-09 6:28 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-08 15:02 RFC: nvme-pci: split the probe and reset handlers Christoph Hellwig
2022-11-08 15:02 ` [PATCH 01/12] nvme-pci: don't call nvme_init_ctrl_finish from nvme_passthru_end Christoph Hellwig
2022-11-09 2:55 ` Sagi Grimberg
2022-11-09 6:26 ` Christoph Hellwig [this message]
2022-11-08 15:02 ` [PATCH 02/12] nvme: move OPAL setup from PCIe to core Christoph Hellwig
2022-11-09 2:55 ` Sagi Grimberg
2022-11-09 20:44 ` Keith Busch
2022-11-09 23:22 ` Chaitanya Kulkarni
2022-11-13 16:15 ` Christoph Hellwig
2022-11-08 15:02 ` [PATCH 03/12] nvme: simplify transport specific device attribute handling Christoph Hellwig
2022-11-09 2:57 ` Sagi Grimberg
2022-11-08 15:02 ` [PATCH 04/12] nvme-pci: put the admin queue in nvme_dev_remove_admin Christoph Hellwig
2022-11-09 2:58 ` Sagi Grimberg
2022-11-09 6:28 ` Christoph Hellwig
2022-11-08 15:02 ` [PATCH 05/12] nvme-pci: move more teardown work to nvme_remove Christoph Hellwig
2022-11-09 3:00 ` Sagi Grimberg
2022-11-08 15:02 ` [PATCH 06/12] nvme-pci: factor the iod mempool creation into a helper Christoph Hellwig
2022-11-09 3:00 ` Sagi Grimberg
2022-11-08 15:02 ` [PATCH 07/12] nvme-pci: factor out a nvme_pci_alloc_ctrl helper Christoph Hellwig
2022-11-09 3:03 ` Sagi Grimberg
2022-11-09 6:28 ` Christoph Hellwig
2022-11-08 15:02 ` [PATCH 08/12] nvme-pci: set constant paramters in nvme_pci_alloc_ctrl Christoph Hellwig
2022-11-09 3:03 ` Sagi Grimberg
2022-11-08 15:02 ` [PATCH 09/12] nvme-pci: call nvme_pci_configure_admin_queue from nvme_pci_enable Christoph Hellwig
2022-11-09 3:04 ` Sagi Grimberg
2022-11-08 15:02 ` [PATCH 10/12] nvme-pci: split nvme_dbbuf_dma_alloc Christoph Hellwig
2022-11-09 3:05 ` Sagi Grimberg
2022-11-08 15:02 ` [PATCH 11/12] nvme-pci: split the initial probe from the rest path Christoph Hellwig
2022-11-09 3:14 ` Sagi Grimberg
2022-11-09 6:31 ` Christoph Hellwig
2022-11-09 17:00 ` Keith Busch
2022-11-09 15:18 ` Gerd Bayer
2022-11-09 15:51 ` Keith Busch
2022-11-09 15:56 ` Keith Busch
2022-11-10 3:17 ` Chao Leng
2022-11-13 16:19 ` Christoph Hellwig
2022-11-08 15:02 ` [PATCH 12/12] nvme-pci: don't unbind the driver on reset failure Christoph Hellwig
2022-11-09 3:15 ` Sagi Grimberg
2022-11-09 17:10 ` Keith Busch
2022-11-09 17:12 ` RFC: nvme-pci: split the probe and reset handlers Keith Busch
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