UN-APPLIED[N]: [U/N][PATCH 1/1] UBUNTU: [Config] enable Intel DMA remapping by default

[Andrea Righi]

On Wed, Feb 21, 2024 at 12:27:22PM +0100, Andrea Righi wrote:
> On Wed, Feb 21, 2024 at 09:56:33AM +0100, Andrea Righi wrote:
> > BugLink: https://bugs.launchpad.net/bugs/1951440
> > 
> > We have tried in the past to enable CONFIG_INTEL_IOMMU_DEFAULT_ON and
> > CONFIG_INTEL_IOMMU_SCALABLE_MODE_DEFAULT_ON (starting with Jammy), but
> > there were multiple issues (especially with old hardware), so we ended
> > up disabling these options afterwards, see LP: #1971699.
> > 
> > Considering that IOMMU is enabled by default in upstream kernels,
> > probably most of these issues are solved now (or old hardware has been
> > decommissioned).
> > 
> > Moreover, having this enabled by default can prevent potential issues
> > with modern hardware and drivers (see for example LP #1958004).
> > 
> > Signed-off-by: Andrea Righi <andrea.righi at canonical.com>
> > ---
> 
> Applied to noble/linux and noble/linux-unstable.
> 
> -Andrea

After an internal discussion we have decided to not apply this in
noble/linux, but keep it only in noble/linux-unstable for now.

Therefore, I have un-applied this from noble/linux.

-Andrea