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Merge pull request #3384 from flatcar/kai/microcode

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sys-firmware/intel-microcode: Use kernel built-in microcode
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Kai Lüke 2025-10-20 14:58:52 +02:00 committed by GitHub
commit 715197de20
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3 changed files with 5 additions and 17 deletions
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1
changelog/bugfixes/2025-10-20-microcode-updates.md Normal file
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@ -0,0 +1 @@
- Fixed Intel microcode updates which were broken in recent Alpha and Beta releases by switching back to built-in extra firmware instead of early cpio inclusion ([Flatcar#1909](https://github.com/flatcar/Flatcar/issues/1909))

5
sdk_container/src/third_party/coreos-overlay/profiles/coreos/base/package.use vendored
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@ -157,13 +157,10 @@ sys-libs/libsemanage -python
sys-fs/zfs minimal -rootfs
# Do not tinker with /boot partition at installation time.
sys-firmware/intel-microcode -initramfs
sys-fs/zfs-kmod -initramfs
sys-kernel/coreos-firmware -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
# For sys-auth/sssd
net-dns/bind gssapi
net-dns/bind-tools gssapi

16
sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-kernel/coreos-kernel-6.12.51.ebuild vendored
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@ -96,20 +96,9 @@ src_compile() {
lsinitrd --kver SILENCEERROR --unpack "${S}"/build/bootengine.cpio || die
mksquashfs . "${S}"/build/bootengine.img -noappend -xattrs-exclude ^btrfs. || die
popd || die
# No early cpio, drop full initrd
> "${S}"/build/bootengine.cpio
# Create minimal initrd
if use amd64; then
mkdir "${S}"/build/early-cpio || die
pushd "${S}"/build/early-cpio || die
lsinitrd --kver SILENCEERROR --unpackearly "${S}"/build/bootengine.cpio || die
# Recreate to only contain the early cpio for microcode
find . -print0 | cpio --null --create --verbose --format=newc > "${S}"/build/bootengine.cpio || die
# Debug: List contents after recreation
cpio -t < "${S}"/build/bootengine.cpio
popd || die
else
# No early cpio, drop full initrd
> "${S}"/build/bootengine.cpio
fi
mkdir "${S}"/build/minimal || die
pushd "${S}"/build/minimal || die
mkdir -p {etc,dev,proc,sys,dev,usr/bin,usr/lib64,realinit,sysusr/usr} || die
@ -141,6 +130,7 @@ src_compile() {
mknod ./dev/random c 1 8 || die
mknod ./dev/zero c 1 5 || die
# No compression because CONFIG_INITRAMFS_COMPRESSION_XZ should take care of it
# (Note: The kernel build system does not support prepending an uncompressed microcode early cpio here)
find . -print0 | cpio --null --create --verbose --format=newc >> "${S}"/build/bootengine.cpio || die
popd || die
kmake "$(kernel_target)"