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This bug has been copied from bug #1476039 and has been proposed to be backported to 7.3 z-stream (EUS).
Reproduced on RHEL-7.3 GA. Verified with dracut-033-463.el7_3.3 on systems with AMD CPU, families 21 and 22. In both cases the correct microcode was included in the early CPIO image: Family 21: # cat /proc/cpuinfo | grep "cpu family" | head -n1 cpu family : 21 # ls -l /usr/lib/firmware/amd-ucode/ total 40 -rw-r--r--. 1 root root 12684 Aug 30 2016 microcode_amd.bin -rw-r--r--. 1 root root 490 Aug 30 2016 microcode_amd.bin.asc -rw-r--r--. 1 root root 7876 Aug 30 2016 microcode_amd_fam15h.bin -rw-r--r--. 1 root root 473 Aug 30 2016 microcode_amd_fam15h.bin.asc -rw-r--r--. 1 root root 3510 Aug 30 2016 microcode_amd_fam16h.bin -rw-r--r--. 1 root root 473 Aug 30 2016 microcode_amd_fam16h.bin.asc # lsinitrd | grep AMD -rw-r--r-- 1 root root 7876 Jan 3 07:53 kernel/x86/microcode/AuthenticAMD.bin # Family 22: # cat /proc/cpuinfo | grep "cpu family" | head -n1 cpu family : 22 # ls -l /usr/lib/firmware/amd-ucode/ total 40 -rw-r--r--. 1 root root 12684 Aug 30 2016 microcode_amd.bin -rw-r--r--. 1 root root 490 Aug 30 2016 microcode_amd.bin.asc -rw-r--r--. 1 root root 7876 Aug 30 2016 microcode_amd_fam15h.bin -rw-r--r--. 1 root root 473 Aug 30 2016 microcode_amd_fam15h.bin.asc -rw-r--r--. 1 root root 3510 Aug 30 2016 microcode_amd_fam16h.bin -rw-r--r--. 1 root root 473 Aug 30 2016 microcode_amd_fam16h.bin.asc # lsinitrd | grep AMD -rw-r--r-- 1 root root 3510 Jan 3 07:53 kernel/x86/microcode/AuthenticAMD.bin # Moving to VERIFIED.
*** Bug 1529309 has been marked as a duplicate of this bug. ***
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2018:0043