Which can have significant performance impact on affected devices,
such as the Librem5 or the PinePhone.
The patch already landed upstream, however a new release is likely
several weeks or months away, making a backport worthwhile.
[ci:skip-build]: already built successfully in CI
which are probably too experimental to ask Alpine to carry them, while being
very helpful for devices that pmOS targets. The explicit goal is to help
Libcamera development and drop the fork again.
For the dma heaps permissions see the ongoing debate in
https://lore.kernel.org/all/bb372250-e8b8-4458-bc99-dd8365b06991@redhat.com/
It's possible that Libcamera will switch to another solution in a future
release or that memory accounting issues around dma heaps will need to
get fixed in the kernel before the permissions can be set by default by
distros.
Regarding `libcamera: simple:` patches:
- 0001-0003 can likely be dropped once the Libcamera SoftISP gains
support for raw (bayer) streams passthrough (on top of converting to
RGB or YUV formats).
- 0004 will likely be needed until Megi downstream patches for the
Pinephone get improved/upstreamed and Libcamera adopted accordingly.
With these patches libcamera and pipewire based applications should work
on the Librem5, Pinephone and - hopefully soon - devices like the OP6.
See https://gitlab.com/postmarketOS/pmaports/-/merge_requests/5162 for
more context.
[ci:skip-build]: already built successfully in CI
