Re: Microcode bug problem?

[Jesper Dybdal]

On 2023-03-19 19:30, Linux-Fan wrote:

Jesper Dybdal writes:

I have no idea whether my old processor is a "CoffeeLake" or a 
"Skylake" or something else.  It is a pc that I bought in 2008, I 
think (and still working just fine).



model name  : Intel(R) Core(TM)2 Duo CPU E8400  @ 3.00GHz


The way to find out is to query the database at ark.intel.com. For 
your processor it leads me to


https://ark.intel.com/content/www/us/en/ark/products/33910/intel-core2-duo-processor-e8400-6m-cache-3-00-ghz-1333-mhz-fsb.html 



The "CoffeeLake" and "Skylake" are processor code names. For the Core 
2 Duo E8400 this is "Wolfdale" according to ark.intel.com



Do I need to worry about those microcode bugs?


Your CPU us far older than the ones affected by the microcode bug. It 
does not have a code name matching one of the listed ones. I'd 
conclude that your CPU is not affected.


That sounds like a very sound conclusion.  And the next time I have a 
similar question, I now know that ark.intel.com is the place to go.


Thanks a lot, to you and to the others who answered,
Jesper

--
Jesper Dybdal
https://www.dybdal.dk

Re: Microcode bug problem?

[Stefan Monnier]

> I have no idea whether my old processor is a "CoffeeLake" or a "Skylake" or
> something else.  It is a pc that I bought in 2008, I think (and still
> working just fine).

For those kinds of questions, I find Wikipedia to be the most helpful
source of info.


Stefan

Re: Microcode bug problem?

[Felix Miata]

Jesper Dybdal composed on 2023-03-19 19:00 (UTC+0100):

> /proc/cpuinfo says:
>> vendor_id   : GenuineIntel
>> cpu family  : 6
>> model   : 23
>> model name  : Intel(R) Core(TM)2 Duo CPU E8400  @ 3.00GHz
> Do I need to worry about those microcode bugs?
 
IIRC, I have 3 E8400s running Bullseye and Bookworm. No worries. That CPU
appeared in multiple popular Dell business model PCs.

-- 
Evolution as taught in public schools is, like religion,
based on faith, not based on science.

 Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!

Felix Miata

Re: Microcode bug problem?

[The Wanderer]

On 2023-03-19 at 14:00, Jesper Dybdal wrote:

> I am planning to upgrade from Buster to Bullseye, and trying to prepare 
> for any problems.
> 
> The release notes say
>> The intel-microcode package currently in bullseye and buster-security 
>> (see DSA-4934-1 (https:
>> //www.debian.org/security/2021/dsa-4934)) is known to contain two 
>> significant bugs. For
>> some CoffeeLake CPUs this update may break network interfaces 
>> (https://github.com/intel/
>> Intel-Linux-Processor-Microcode-Data-Files/issues/56) that use 
>> firmware-iwlwifi,
>> and for some Skylake R0/D0 CPUs on systems using a very outdated 
>> firmware/BIOS, the system may
>> hang on boot 
>> (https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/
>> issues/31).
> 
> I have no idea whether my old processor is a "CoffeeLake" or a "Skylake" 
> or something else.  It is a pc that I bought in 2008, I think (and still 
> working just fine).
> 
> /proc/cpuinfo says:
>> vendor_id   : GenuineIntel
>> cpu family  : 6
>> model   : 23
>> model name  : Intel(R) Core(TM)2 Duo CPU E8400  @ 3.00GHz

According to a bit of Googling, the Core 2 Duo E8400 is from the
microarchitecture codenamed Wolfdale.

According to
https://en.wikipedia.org/wiki/List_of_Intel_CPU_microarchitectures,
Wolfdale is the codename for the desktop version of what might be
considered "generation 0", prior to the "Core i" series of CPU product
names, and was released in 2007.

According to that same page, Skylake was generation 6, and was released
in 2015.

According to that same page, Coffee Lake was part of generations 8 and
9, and was released in 2017.

> Do I need to worry about those microcode bugs?

Based on the above: no.

-- 
   The Wanderer

The reasonable man adapts himself to the world; the unreasonable one
persists in trying to adapt the world to himself. Therefore all
progress depends on the unreasonable man. -- George Bernard Shaw



signature.asc
Description: OpenPGP digital signature

Re: Microcode bug problem?

[Linux-Fan]

Jesper Dybdal writes:

I am planning to upgrade from Buster to Bullseye, and trying to prepare for  
any problems.


The release notes say
The intel-microcode package currently in bullseye and buster-security (see  
DSA-4934-1 (https:
//www.debian.org/security/2021/dsa-4934)) is known to contain two  
significant bugs. For
some CoffeeLake CPUs this update may break network interfaces  
(https://github.com/intel/
Intel-Linux-Processor-Microcode-Data-Files/issues/56) that use firmware- 
iwlwifi,
and for some Skylake R0/D0 CPUs on systems using a very outdated  
firmware/BIOS, the system may
hang on boot (https://github.com/intel/Intel-Linux-Processor-Microcode-Data- 
Files/

issues/31).


I have no idea whether my old processor is a "CoffeeLake" or a "Skylake" or  
something else.  It is a pc that I bought in 2008, I think (and still  
working just fine).


/proc/cpuinfo says:

vendor_id   : GenuineIntel
cpu family  : 6
model   : 23
model name  : Intel(R) Core(TM)2 Duo CPU E8400  @ 3.00GHz


The way to find out is to query the database at ark.intel.com. For your  
processor it leads me to


https://ark.intel.com/content/www/us/en/ark/products/33910/intel-core2-duo-processor-e8400-6m-cache-3-00-ghz-1333-mhz-fsb.html

The "CoffeeLake" and "Skylake" are processor code names. For the Core 2 Duo  
E8400 this is "Wolfdale" according to ark.intel.com



Do I need to worry about those microcode bugs?


Your CPU us far older than the ones affected by the microcode bug. It does  
not have a code name matching one of the listed ones. I'd conclude that your  
CPU is not affected.


HTH
Linux-Fan

öö


pgpVU7E3j6RtC.pgp
Description: PGP signature

Microcode bug problem?

[Jesper Dybdal]

I am planning to upgrade from Buster to Bullseye, and trying to prepare 
for any problems.


The release notes say
The intel-microcode package currently in bullseye and buster-security 
(see DSA-4934-1 (https:
//www.debian.org/security/2021/dsa-4934)) is known to contain two 
significant bugs. For
some CoffeeLake CPUs this update may break network interfaces 
(https://github.com/intel/
Intel-Linux-Processor-Microcode-Data-Files/issues/56) that use 
firmware-iwlwifi,
and for some Skylake R0/D0 CPUs on systems using a very outdated 
firmware/BIOS, the system may
hang on boot 
(https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/

issues/31).


I have no idea whether my old processor is a "CoffeeLake" or a "Skylake" 
or something else.  It is a pc that I bought in 2008, I think (and still 
working just fine).


/proc/cpuinfo says:

vendor_id   : GenuineIntel
cpu family  : 6
model   : 23
model name  : Intel(R) Core(TM)2 Duo CPU E8400  @ 3.00GHz

Do I need to worry about those microcode bugs?

Thanks,
Jesper Dybdal

--
Jesper Dybdal
https://www.dybdal.dk