Messages in this thread | | | Subject | Re: Problem with late AMD microcode reload/feedback | From | Rafał Miłecki <> | Date | Sun, 16 Dec 2018 09:08:00 +0100 |
| |
On 16.12.2018 01:05, Borislav Petkov wrote: > On Sun, Dec 16, 2018 at 12:46:05AM +0100, Rafał Miłecki wrote: >> [19.736770] microcode: [find_equiv_id] sig:8458000 > > That's your CPU's family/model/stepping: 0x0810f10 > >> [19.736772] microcode: [find_equiv_id] equiv_table->installed_cpu:8392466 >> [19.736775] microcode: [find_equiv_id] equiv_table->installed_cpu:8392578 > > and those are present on the system. Best to look at them in hex, btw: > > 0x0800f12 > 0x0800f82 > > Which means, there's no microcode for your CPU so nothing gets updated.
Thanks! I had no idea microcode_amd_fam17h.bin is a container with few microcodes. I thought there is a single microcode for a whole family (e.g. 17h).
Using hex also makes more sense indeed! [ 44.127941] microcode: verify_and_add_patch: Added patch_id: 0x08001227, proc_id: 0x8012 [ 44.127948] microcode: verify_and_add_patch: Added patch_id: 0x0800820b, proc_id: 0x8082 [ 44.127952] microcode: [find_equiv_id] sig:0x810f10 [ 44.127955] microcode: [find_equiv_id] equiv_table->installed_cpu:0x800f12 [ 44.127958] microcode: [find_equiv_id] equiv_table->installed_cpu:0x800f82
So for now I'm stuck with the default/BIOS-uploaded microcode: [ 2.604680] microcode: CPU0: patch_level=0x0810100b [ 2.605617] microcode: CPU1: patch_level=0x0810100b [ 2.606583] microcode: CPU2: patch_level=0x0810100b [ 2.607528] microcode: CPU3: patch_level=0x0810100b [ 2.608408] microcode: CPU4: patch_level=0x0810100b [ 2.609285] microcode: CPU5: patch_level=0x0810100b [ 2.610270] microcode: CPU6: patch_level=0x0810100b [ 2.611135] microcode: CPU7: patch_level=0x0810100b
I've one more hacking idea. My notebook has Ryzen 5 PRO 2500U CPU but I also have access to another one with Ryzen 5 2500U running: [ 2.780949] microcode: CPU0: patch_level=0x08101007
For my hack tests I'd like to replace my 0x0810100b with a 0x08101007. Is that possible to extract/dump current microcode from the CPU and package it as microcode_amd_fam17h.bin?
Are there any ready tools for that?
| |