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linux: always use xz for compressing modules

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The change I merged too hastily in #302300 increases the size by
~30%. This could be improved upon, but in the meantime let's go back
to xz while keeping zstd-compressed firmware (only 4.4% larger) and
_support_ for zstd-compressed modules.
This commit is contained in:
Linus Heckemann 2024-05-08 15:29:21 +02:00
parent a10842c7f0
commit 2f04c5f8a3
2 changed files with 2 additions and 3 deletions
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2
nixos/doc/manual/release-notes/rl-2405.section.md
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@ -53,7 +53,7 @@ Use `services.pipewire.extraConfig` or `services.pipewire.configPackages` for Pi
- `system.etc.overlay.enable` option was added. If enabled, `/etc` is
mounted via an overlayfs instead of being created by a custom perl script.
- For each supporting version of the Linux kernel firmware blobs and kernel modules
- For each supporting version of the Linux kernel firmware blobs
are compressed with zstd. For firmware blobs this means an increase of 4.4% in size, however
a significantly higher decompression speed.

3
pkgs/os-specific/linux/kernel/common-config.nix
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@ -951,8 +951,7 @@ let
ZEROPLUS_FF = yes;
MODULE_COMPRESS = whenOlder "5.13" yes;
MODULE_COMPRESS_XZ = whenOlder "5.13" yes;
MODULE_COMPRESS_ZSTD = whenAtLeast "5.13" yes;
MODULE_COMPRESS_XZ = yes;
SYSVIPC = yes; # System-V IPC