From: Joerg Roedel <jroedel@suse.de>
To: Jason Gunthorpe <jgg@nvidia.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>,
iommu@lists.linux.dev, Joerg Roedel <joro@8bytes.org>,
Len Brown <lenb@kernel.org>,
linux-acpi@vger.kernel.org,
"Rafael J. Wysocki" <rafael@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
Will Deacon <will@kernel.org>,
Lu Baolu <baolu.lu@linux.intel.com>,
Kevin Tian <kevin.tian@intel.com>,
Chen-Yu Tsai <wenst@chromium.org>
Subject: Re: [PATCH v2 0/4] Fix device_lock deadlock on two probe() paths
Date: Fri, 18 Aug 2023 17:56:20 +0200 [thread overview]
Message-ID: <ZN-UpDFHab0vGuXp@suse.de> (raw)
In-Reply-To: <ZN5n7GnlrTS6s5Yg@nvidia.com>
On Thu, Aug 17, 2023 at 03:33:16PM -0300, Jason Gunthorpe wrote:
> Bascially.. Yikes!
Hmm, that is a difficult situation. Even if the problem is a misuse of
the APIs we can not just blindly break other drivers by our core
changes.
We need to resolve this situation pretty soon, otherwise I need to
remove the locking rework patches from the IOMMU tree until the
callers are fixed.
Is there a way to keep the broken drivers working for now?
Regards,
--
Jörg Rödel
jroedel@suse.de
SUSE Software Solutions Germany GmbH
Frankenstraße 146
90461 Nürnberg
Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
next prev parent reply other threads:[~2023-08-18 15:56 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20230809144403eucas1p1345aec6ec34440f1794594426e0402ab@eucas1p1.samsung.com>
2023-08-09 14:43 ` [PATCH v2 0/4] Fix device_lock deadlock on two probe() paths Jason Gunthorpe
2023-08-09 14:43 ` [PATCH v2 1/4] iommu: Provide iommu_probe_device_locked() Jason Gunthorpe
2023-08-09 14:43 ` [PATCH v2 2/4] iommu: Pass in the iommu_device to probe for in bus_iommu_probe() Jason Gunthorpe
2023-08-09 14:43 ` [PATCH v2 3/4] iommu: Do not attempt to re-lock the iommu device when probing Jason Gunthorpe
2023-08-10 2:37 ` Tian, Kevin
2023-08-09 14:43 ` [PATCH v2 4/4] iommu: dev->iommu->iommu_dev must be set before ops->device_group() Jason Gunthorpe
2023-08-10 2:37 ` Tian, Kevin
2023-08-09 15:49 ` [PATCH v2 0/4] Fix device_lock deadlock on two probe() paths Joerg Roedel
2023-08-09 15:55 ` Jason Gunthorpe
2023-08-10 16:15 ` Jeffrey Hugo
2023-08-17 8:31 ` Marek Szyprowski
2023-08-17 18:33 ` Jason Gunthorpe
2023-08-18 15:56 ` Joerg Roedel [this message]
2023-08-18 16:06 ` Jason Gunthorpe
2023-08-18 18:00 ` Eric Farman
2023-08-18 18:15 ` Jason Gunthorpe
2023-08-18 18:32 ` Eric Farman
2023-08-18 18:24 ` Joerg Roedel
2023-08-18 18:50 ` Robin Murphy
2023-08-18 19:19 ` Jason Gunthorpe
2023-08-21 11:35 ` Robin Murphy
2023-08-18 19:18 ` Jason Gunthorpe
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