What is the output of

sudo dmesg | grep -E '(microcode|model)'

?
This should show information about your CPU model and if its microcode is actually updated.

Regards,
Jörg.

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Franco Martelli wrote:

On 25/09/24 at 14:58, J�rg-Volker Peetz wrote:

What is the output of

sudo dmesg | grep -E '(microcode|model)'

?
This should show information about your CPU model and if its microcode
is actually updated.

Regards,
J�rg.

It returns:

~# dmesg | grep -E '(microcode|model)'
[ 0.131534] smpboot: CPU0: AMD FX(tm)-8350 Eight-Core Processor (family: 0x15, model: 0x2, stepping: 0x0)
[ 0.470751] microcode: microcode updated early to new patch_level=0x06000852
[ 0.470889] microcode: CPU0: patch_level=0x06000852
[ 0.470968] microcode: CPU1: patch_level=0x06000852
[ 0.471078] microcode: CPU2: patch_level=0x06000852
[ 0.471166] microcode: CPU3: patch_level=0x06000852
[ 0.471276] microcode: CPU4: patch_level=0x06000852
[ 0.471360] microcode: CPU5: patch_level=0x06000852
[ 0.471438] microcode: CPU6: patch_level=0x06000852
[ 0.471523] microcode: CPU7: patch_level=0x06000852
[ 0.471627] microcode: Microcode Update Driver: v2.2.

Is the CPU updated to the latest microcode?

Yes.

Resources I needed to find that out for you: https://www.cpu-world.com/cgi-bin/CPUID.pl?CPUID=22328

and

https://github.com/platomav/CPUMicrocodes/blob/master/AMD/cpu00600F20_ver06000852_2018-02-06_893C1544.bin

-dsr-

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Franco Martelli wrote:

On 25/09/24 at 18:16, Dan Ritter wrote:

Is the CPU updated to the latest microcode?

Yes.

Resources I needed to find that out for you: https://www.cpu-world.com/cgi-bin/CPUID.pl?CPUID=22328

Thank you for the time you spent for me

and

https://github.com/platomav/CPUMicrocodes/blob/master/AMD/cpu00600F20_ver06000852_2018-02-06_893C1544.bin

So the CPU's microcode currently installed is dated February 2018, am I right?

Correct. And it is not surprising, because AMD hasn't produced a
chip with that core since 2015.

What I'm looking for it was a procedure to discover if the CPU's microcode
is synced with that provided by "amd64-microcode" package. Like that posted by Jeffrey Walton:

Doesn't matter: it has the latest available from AMD, and either amd64-microcode has the same version, or it has an earlier
version -- which is unlikely.

-dsr-

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On 2024-09-25, Franco Martelli wrote:

The file that contains the microcode for my CPU is dated April 2022:

$ LANG=C ls -l /lib/firmware/amd-ucode/microcode_amd_fam15h.bin
-rw-r--r-- 1 root root 7876 Apr 15 2022
/lib/firmware/amd-ucode/microcode_amd_fam15h.bin

Same for me. And :

# dpkg -l amd64-microcode
ii amd64-microcode 3.20240820.1~deb12u1 amd64 Platform firmware and microcode for AMD CPUs and SoCs

But I got :

# cat /proc/cpuinfo | grep microcode
microcode : 0xa601206
[x cpu nb]

Previously you said :

The issue is that I'm running an homemade Kernel image that it had the CONFIG_MICROCODE_AMD item disabled by me mistakenly, so I'm not sure that the microcode of my CPU was updated. Of course I've rebuild and installed a new kernel with that item enabled before rebooting.

I also build my custom kernel. I use sources from 6.10.6-1~bpo12+1. I
have no CONFIG_MICROCODE_AMD but a CONFIG_MICROCODE set by
CONFIG_CPU_SUP_AMD. Which kernel version do you use ?

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Hi Franco,

Franco Martelli wrote on 25/09/2024 17:07:

On 25/09/24 at 14:58, Jörg-Volker Peetz wrote:

What is the output of

sudo dmesg | grep -E '(microcode|model)'

?
This should show information about your CPU model and if its microcode is
actually updated.

Regards,
Jörg.

It returns:

~# dmesg | grep -E '(microcode|model)'
[    0.131534] smpboot: CPU0: AMD FX(tm)-8350 Eight-Core Processor (family:
0x15, model: 0x2, stepping: 0x0)
[    0.470751] microcode: microcode updated early to new patch_level=0x06000852
[    0.470889] microcode: CPU0: patch_level=0x06000852

<snip>

A new microcode for your CPU should be inside of

/usr/lib/firmware/amd-ucode/microcode_amd_fam15h.bin

since it says 'family: 0x15' in your output.
There is a little program on https://github.com/AMDESE/amd_ucode_info to look into the microcode file. For the package amd64-microcode on Debian testing version 3.20240820.1 it yields:

$ amd_ucode_info.py /usr/lib/firmware/amd-ucode/microcode_amd_fam15h.bin Microcode patches in xx/usr/lib/firmware/amd-ucode/microcode_amd_fam15h.bin:
Family=0x15 Model=0x01 Stepping=0x02: Patch=0x0600063e Length=2592 bytes
Family=0x15 Model=0x02 Stepping=0x00: Patch=0x06000852 Length=2592 bytes
Family=0x15 Model=0x10 Stepping=0x01: Patch=0x06001119 Length=2592 bytes

So yes, your CPU microcode is up-to-date.

Regards,
Jörg.

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On Thu, 2024-09-26 at 14:53 +0200, Jörg-Volker Peetz wrote:

There is a little program on https://github.com/AMDESE/amd_ucode_info to look
into the microcode file. For the package amd64-microcode on Debian testing version 3.20240820.1 it yields:

$ amd_ucode_info.py /usr/lib/firmware/amd-ucode/microcode_amd_fam15h.bin Microcode patches in xx/usr/lib/firmware/amd-ucode/microcode_amd_fam15h.bin:
Family=0x15 Model=0x01 Stepping=0x02: Patch=0x0600063e Length=2592 bytes
Family=0x15 Model=0x02 Stepping=0x00: Patch=0x06000852 Length=2592 bytes
Family=0x15 Model=0x10 Stepping=0x01: Patch=0x06001119 Length=2592 bytes

So yes, your CPU microcode is up-to-date.

Perhaps it would be nice to ship a similar tool (or just a textual table as documentation) in the amd64-microcode package. I agree that it is not too
easy to verify your AMD CPU microcode is indeed up-to-date with the latest microcode shipped in the package (or available from AMD), especially if you
are not too familiar with all the details – like how /proc/cpuinfo reports the family and model numbers in decimal and not in hex, unlike everywhere
else.

Related bug report discussion with pretty good analysis and ideas from Matt Taggart:

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1076703#30

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