From: Jason Gunthorpe <jgg@nvidia.com>
To: Robin Murphy <robin.murphy@arm.com>
Cc: Baolu Lu <baolu.lu@linux.intel.com>,
iommu@lists.linux.dev, Joerg Roedel <joro@8bytes.org>,
llvm@lists.linux.dev, Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>,
Miguel Ojeda <ojeda@kernel.org>, Tom Rix <trix@redhat.com>,
Will Deacon <will@kernel.org>, Kevin Tian <kevin.tian@intel.com>,
Nicolin Chen <nicolinc@nvidia.com>
Subject: Re: [PATCH v2 12/14] iommu: Consolidate the default_domain setup to one function
Date: Thu, 30 Mar 2023 16:01:03 -0300 [thread overview]
Message-ID: <ZCXcbxLfilYKAb60@nvidia.com> (raw)
In-Reply-To: <5966bdf2-2a1a-2970-9f18-784b88f2f687@arm.com>
On Thu, Mar 30, 2023 at 07:23:56PM +0100, Robin Murphy wrote:
> > I changed it like this:
> >
> > dom = __iommu_domain_alloc(bus, req_type);
> > if (!dom && !target_type &&
> > (req_type == IOMMU_DOMAIN_IDENTITY ||
> > req_type == IOMMU_DOMAIN_DMA_FQ)) {
> > dom = __iommu_domain_alloc(bus, IOMMU_DOMAIN_DMA);
> >
> > So the auto selection only happens if the target_type is not automatic.
>
> You mean "is automatic"?
Yep
> I'm missing how target_type and req_type are
> related here, but the general principle should be that if we have derived
> the type from iommu_def_domain_type, because we had nothing more specific
> from either a sysfs request or iommu_get_def_domain_type(), then a
> !IOMMU_DOMAIN_DMA failure can retry with IOMMU_DOMAIN_DMA. Otherwise any
> failure should be final.
Ok, can do
Jason
next prev parent reply other threads:[~2023-03-30 19:01 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-29 23:40 [PATCH v2 00/14] Consolidate the error handling around device attachment Jason Gunthorpe
2023-03-29 23:40 ` [PATCH v2 01/14] iommu: Replace iommu_group_device_count() with list_count_nodes() Jason Gunthorpe
2023-03-30 6:22 ` Baolu Lu
2023-04-04 9:15 ` Tian, Kevin
2023-03-29 23:40 ` [PATCH v2 02/14] iommu: Add for_each_group_device() Jason Gunthorpe
2023-03-29 23:52 ` Miguel Ojeda
2023-03-30 14:28 ` Jason Gunthorpe
2023-05-09 13:12 ` Miguel Ojeda
2023-05-10 1:01 ` Jason Gunthorpe
2023-03-30 6:23 ` Baolu Lu
2023-04-04 9:16 ` Tian, Kevin
2023-03-29 23:40 ` [PATCH v2 03/14] iommu: Make __iommu_group_set_domain() handle error unwind Jason Gunthorpe
2023-03-30 6:23 ` Baolu Lu
2023-03-29 23:40 ` [PATCH v2 04/14] iommu: Use __iommu_group_set_domain() for __iommu_attach_group() Jason Gunthorpe
2023-03-30 6:23 ` Baolu Lu
2023-03-29 23:40 ` [PATCH v2 05/14] iommu: Use __iommu_group_set_domain() in iommu_change_dev_def_domain() Jason Gunthorpe
2023-03-30 6:24 ` Baolu Lu
2023-04-04 9:16 ` Tian, Kevin
2023-03-29 23:40 ` [PATCH v2 06/14] iommu: Replace __iommu_group_dma_first_attach() with set_domain Jason Gunthorpe
2023-03-30 6:24 ` Baolu Lu
2023-03-29 23:40 ` [PATCH v2 07/14] iommu: Make iommu_group_do_dma_first_attach() simpler Jason Gunthorpe
2023-03-30 6:42 ` Baolu Lu
2023-03-30 14:41 ` Jason Gunthorpe
2023-03-31 2:21 ` Baolu Lu
2023-04-04 9:17 ` Tian, Kevin
2023-03-29 23:40 ` [PATCH v2 08/14] iommu: Make iommu_group_do_dma_first_attach() work with owned groups Jason Gunthorpe
2023-03-30 6:45 ` Baolu Lu
2023-03-30 15:54 ` Robin Murphy
2023-03-30 16:49 ` Jason Gunthorpe
2023-04-04 9:21 ` Tian, Kevin
2023-03-29 23:40 ` [PATCH v2 09/14] iommu: Fix iommu_probe_device() to attach the right domain Jason Gunthorpe
2023-03-30 7:33 ` Baolu Lu
2023-04-04 9:25 ` Tian, Kevin
2023-03-29 23:40 ` [PATCH v2 10/14] iommu: Remove the assignment of group->domain during default domain alloc Jason Gunthorpe
2023-03-30 7:33 ` Baolu Lu
2023-03-29 23:40 ` [PATCH v2 11/14] iommu: Consolidate the code to calculate the target default domain type Jason Gunthorpe
2023-03-30 11:51 ` Baolu Lu
2023-04-04 9:39 ` Tian, Kevin
2023-04-04 18:51 ` Jason Gunthorpe
2023-03-29 23:40 ` [PATCH v2 12/14] iommu: Consolidate the default_domain setup to one function Jason Gunthorpe
2023-03-30 12:37 ` Baolu Lu
2023-03-30 14:29 ` Robin Murphy
2023-03-30 14:45 ` Jason Gunthorpe
2023-03-30 15:42 ` Jason Gunthorpe
2023-04-04 11:29 ` Robin Murphy
2023-03-30 15:36 ` Jason Gunthorpe
2023-03-30 18:23 ` Robin Murphy
2023-03-30 19:01 ` Jason Gunthorpe [this message]
2023-03-29 23:40 ` [PATCH v2 13/14] iommu: Remove __iommu_group_for_each_dev() Jason Gunthorpe
2023-03-30 12:40 ` Baolu Lu
2023-03-29 23:40 ` [PATCH v2 14/14] iommu: Tidy the control flow in iommu_group_store_type() Jason Gunthorpe
2023-03-30 12:45 ` Baolu Lu
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