On Tue, 2020-09-29 at 16:29 -0400, Ben Cotton wrote:
> https://fedoraproject.org/wiki/Changes/CompressKernelFirmware
> 
> == Summary ==
> Compress Kernel Firmwares to reduce on disk size
> 
> == Owner ==
> * Name: [[User:pbrobinson| Peter Robinson]]
> * Email: [mailto:pbrobin...@fedoraproject.org| pbrobin...@fedoraproject.org]
> 
> == Detailed Description ==
> 
> Since the linux 5.3 kernel there has been support for loading firmware
> from xz compressed firmware. The upstream linux-firmware respository
> is now over 900Mb, not including other kernel firmware that are in
> Fedora but come from other sources. By compessing the firmware with
> "xz -C crc32", the only option currently supported in the kernel, we
> can reduce the ondisk size of the firmware by almost half.
I wonder if this can also help make the boot isos and installation images 
smaller ? I'm sure they haver some firmware on
them. Or alternatively we could reduce the potentially quite meintenance 
intensive firmware culling we do at the moment.

> 
> == Benefit to Fedora ==
> 
> Reduced on disk size of the firmware used by the kernel.
> 
> == Scope ==
> * Proposal owners:
> ** Add support upstream to the linux-firmware copy-firmware script to
> compess the firmware and create the symlinks to the compressed
> firmware
> ** Enable the upstream support in the Fedora linux-firmware package to
> compress the firmware at build time
> ** Enable compressing firmware in packages that contain firmware used
> by the kernel: eg alsa-sof-firmware, atmel-firmware, zd1211-firmware
> ** Enable the CONFIG_FW_LOADER_COMPRESS kernel option (long complete)
> * Other developers:
> ** No impact
> * Policies and guidelines: N/A (not a System Wide Change)
> * Trademark approval: N/A (not needed for this Change)
> 
> == Upgrade/compatibility impact ==
> 
> There should be no upgrade impact, the support was added to the
> generic firmware loader interface in the kernel.
> 
> == How To Test ==
> 
> Check devices that need firmware still work. Some devices that need
> firmware include:
> * GPU drivers such as nvidia, AMD and i915
> * Wireless drivers such as those from Intel, Broadcom/Cyprus, TI,
> Qualcomm and Marvel
> * Wired network interfaces
> * Storage drivers
> * USB controllers and drivers
> 
> == User Experience ==
> 
> Generally users should notice little to no difference.
> 
> == Dependencies ==
> N/A (not a System Wide Change)
> 
> == Contingency Plan ==
> 
> * Contingency mechanism: Don't compress kernel firmware
> * Contingency deadline: GA
> * Blocks release? No.
> * Blocks product? No.
> 
> == Documentation ==
> N/A (not a System Wide Change)
> 
> == Release Notes ==
> N/A
> 
> 
> -- 
> Ben Cotton
> He / Him / His
> Senior Program Manager, Fedora & CentOS Stream
> Red Hat
> TZ=America/Indiana/Indianapolis
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