Dear Matt,
On 04/30/18 16:44, Matt Vander Werf wrote:
I did actually test also on an R815 running Opteron 6234 as well, and got the same result. Microcode version is different (0x600063d) but also did not change with the update.
Thank you for sharing the information.
Systems running Opteron 6100 series processors wouldn't be included in the fixes AMD said they released to OEMs (like Dell), since those are pre-"Bulldozer" processors. Also, from what I can tell, theydon't need microcode updates to mitigate Spectre, since the vulnerable features can be disabled with simple OS updates. Forthose processors, the ibp_disable CPU flag will show up afterinstalling latest OS updates (see https://www.realworldtech.com/forum/?threadid=176206&curpostid=176206 and second option under AMD defaults at https://access.redhat.com/articles/3311301#architectural-defaults-11).
Thank you for the clarification. Indeed, updating the firmware to 3.4.0, the microcode version is still the same at 0x10000d9 (model 9 stepping 1 ucode 0x10000d9 cpuid 0x100f91). The processor is from March 2010 [1].
It would be nice if AMD would release microcode updates to thepublic through linux-firmware or on their own site like Intel does ( https://downloadcenter.intel.com/download/27591/Linux-Processor-Microcode-Data-File?product=873)that users can then apply manually. Sure, BIOS updates are always preferred, but having the microcode updates would mean we wouldn't have to worry about vendors like Dell releasing BIOS updates that work...
Agreed.
@Dell: Any update/thoughts on this??
To bad, Dell does not answer the question at hand. (The thread hijacking also did not help.) Did you open a call yet with Dell? Maybe that’s the better route.
Kind regards, PaulPS: Your signature separator misses a space after the two dashes to be automatically stripped by standard mail user agents [1].
-- Matt Vander Werf
[1] https://en.wikipedia.org/wiki/Opteron[2] https://en.wikipedia.org/wiki/Signature_block#Signatures_in_Usenet_postings
smime.p7s
Description: S/MIME Cryptographic Signature
_______________________________________________ Linux-PowerEdge mailing list [email protected] https://lists.us.dell.com/mailman/listinfo/linux-poweredge
