APPLIED: [PATCH 0/2][j/k linux-aws] Support non-strict iommu mode on arm64
Tim Gardner
tim.gardner at canonical.com
Wed Nov 9 23:45:36 UTC 2022
On 10/28/22 9:36 AM, Tim Gardner wrote:
> BugLink: https://bugs.launchpad.net/bugs/1806488
>
> [Impact]
>
> For Ubuntu 20.04 and 22.04 ARM AMIs, a change was made in the default settings
> with the release of the 5.15 Kernel update that has caused a regression.
> Starting with 5.15, the IOMMU settings have been set to `CONFIG_IOMMU_DEFAULT_DMA_STRICT=y`.
> In previous versions, this setting was set to `CONFIG_IOMMU_DEFAULT_DMA_LAZY=y`.
>
> [Test Case]
>
> Amazon tested.
>
> [Where things could go wrong]
>
> This feature has been pretty well tested on arm64. Not setting LAZY was an oversight.
>
> [Other Info]
>
> SF: #00347225
>
Applied to jammy:linux-aws/master-next kinetic:linux-aws/master-next.
Thanks.
-rtg
--
-----------
Tim Gardner
Canonical, Inc
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