ACK: [SRU][J][PATCH 0/1] disable Intel DMA remapping by default

[Zachary Tahenakos]

Acked-by: Zachary Tahenakos <zachary.tahenakos at canonical.com>

On 5/5/22 8:34 AM, Andrea Righi wrote:
> BugLink: https://bugs.launchpad.net/bugs/1971699
>
> [Impact]
>
> It seems that enabling Intel IOMMU can cause some weird gfx problems,
> see for example:
>
>   https://bugs.launchpad.net/bugs/1971146
>   https://bugs.launchpad.net/bugs/1965882
>
> [Test case]
>
> We don't have any specific test case, only other bug reports that
> tracked down the origin of the issue as being introduced when
> CONFIG_INTEL_IOMMU_DEFAULT_ON has been enabled by default.
>
> [Fix]
>
> Revert "UBUNTU: [Config] enable Intel DMA remapping options by default"
>
> [Regression potential]
>
> DMA remapping device not present at boot by default, users that require
> this feature will need to specifically add intel_iommu=on to the kernel
> boot parameters to enable it.
>
>