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Upgrade Dracut to 106, use its sysroot feature, fix CPU microcode #2837

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Merged
chewi merged 7 commits into from
Apr 23, 2025
Merged

Upgrade Dracut to 106, use its sysroot feature, fix CPU microcode #2837

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092e50f
sys-kernel/dracut: Use Gentoo package instead, upgrading to 106
chewi Aug 11, 2024
9bdf3ef
sys-kernel/dracut: Disable the dracut-cpio feature, which requires Rust
chewi Apr 7, 2025
841cf19
sys-kernel/dracut: Heavily patch for the better sysroot functionality
chewi Apr 7, 2025
e5ef9e4
sys-kernel/coreos-kernel: Adapt for new Dracut + bootengine with sysroot
chewi Apr 7, 2025
959e071
sys-apps/systemd: Avoid initrd bloat by using OpenSSL instead of gcrypt
chewi Apr 7, 2025
7b3aac2
sys-firmware/intel-microcode: Fix inclusion of microcode in the initrd
chewi Apr 15, 2025
2af957f
sys-firmware/intel-microcode: Don't install the split microcode
chewi Apr 15, 2025
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4 changes: 4 additions & 0 deletions sdk_container/src/third_party/coreos-overlay/profiles/coreos/base/package.use
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Expand Up @@ -158,6 +158,10 @@ sys-fs/zfs minimal -rootfs
# Do not tinker with /boot partition at installation time.
sys-fs/zfs-kmod -initramfs

# Only needed for direct loading by the kernel, which is dangerous, and we
# include all the microcode in the initrd anyway.
sys-firmware/intel-microcode -split-ucode
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@pothos pothos Oct 9, 2025

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Seems this is the reason we still have AMD ucode in the kernel but not Intel anymore.
Why is direct loading dangerous? I didn't see any difference documented compared to the inclusion in the initrd.

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@chewi chewi Oct 9, 2025

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I meant "late loading" after booting. See the kernel docs for why it is dangerous. intel-uc.img contains all the microcode we should need.


# For sys-auth/sssd
net-dns/bind gssapi
net-dns/bind-tools gssapi
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