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

[Tim Gardner]

Acked-by: Tim Gardner <tim.gardner at canonical.com>

On 5/5/22 06:34, 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.
> 
> 

-- 
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Tim Gardner
Canonical, Inc