@Philipp & @Doug:
I couldn't reproduce your issue on my E5-2697 v3 platform with 0x2B and 0x36 microcode in Ubuntu 16.04. E5-2697 v3 has the same F/M/S with the affected processor E5-1650 v3 and E5-2687W v3.
Could you tell me what's your conclusion that it is a microcode regression or upstream kernel regression ? From comment#27, it seems a kernel regression, but the title and some comments always point to microcode regression.
Could you reproduce it with 16.04 ?
@Philipp & @Doug:
I couldn't reproduce your issue on my E5-2697 v3 platform with 0x2B and 0x36 microcode in Ubuntu 16.04. E5-2697 v3 has the same F/M/S with the affected processor E5-1650 v3 and E5-2687W v3.
Could you tell me what's your conclusion that it is a microcode regression or upstream kernel regression ? From comment#27, it seems a kernel regression, but the title and some comments always point to microcode regression.
Could you reproduce it with 16.04 ?