From: Lu Baolu <baolu.lu@linux.intel.com>
To: Joerg Roedel <joro@8bytes.org>
Cc: baolu.lu@linux.intel.com, ashok.raj@intel.com,
jacob.jun.pan@linux.intel.com, kevin.tian@intel.com,
Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>,
iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
Daniel Drake <drake@endlessm.com>,
Derrick Jonathan <jonathan.derrick@intel.com>,
Jerry Snitselaar <jsnitsel@redhat.com>,
Robin Murphy <robin.murphy@arm.com>,
Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH v4 0/3] Replace private domain with per-group default domain
Date: Mon, 11 May 2020 07:16:30 +0800 [thread overview]
Message-ID: <7928dd48-93da-62f0-b455-6e6b248d0fae@linux.intel.com> (raw)
In-Reply-To: <20200506015947.28662-1-baolu.lu@linux.intel.com>
Hi Joerg,
On 5/6/20 9:59 AM, Lu Baolu wrote:
> Some devices are required to use a specific type (identity or dma) of
> default domain when they are used with a vendor iommu. When the system
> level default domain type is different from it, the vendor iommu driver
> has to request a new default domain with either
> iommu_request_dma_domain_for_dev() or iommu_request_dm_for_dev() in the
> add_dev() callback. Unfortunately, these two helpers only work when the
> group hasn't been assigned to any other devices, hence, some vendor iommu
> driver has to use a private domain if it fails to request a new default
> one.
>
> Joerg proposed an on-going proposal which makes the default domain
> framework to support configuring per-group default domain during boot
> process.
>
> https://lkml.org/lkml/2020/4/14/616
> [This has been applied in iommu/next.]
>
> Hence, there is no need to keep the private domain implementation
> in the Intel IOMMU driver. This patch series aims to remove it.
Can you please take this series to iommu/next for wider test?
Best regards,
baolu
next prev parent reply other threads:[~2020-05-10 23:20 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-06 1:59 [PATCH v4 0/3] Replace private domain with per-group default domain Lu Baolu
2020-05-06 1:59 ` [PATCH v4 1/3] iommu/vt-d: Allow 32bit devices to uses DMA domain Lu Baolu
2020-05-06 1:59 ` [PATCH v4 2/3] iommu/vt-d: Allow PCI sub-hierarchy to use " Lu Baolu
2020-05-06 1:59 ` [PATCH v4 3/3] iommu/vt-d: Apply per-device dma_ops Lu Baolu
2020-05-06 2:09 ` [PATCH v4 0/3] Replace private domain with per-group default domain Daniel Drake
2020-05-06 17:50 ` Derrick, Jonathan
2020-05-10 23:16 ` Lu Baolu [this message]
2020-05-12 17:05 ` Jerry Snitselaar
2020-05-13 8:51 ` Joerg Roedel
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