Gentoo Archives: gentoo-user

From: Adam Carter <adamcarter3@×××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] AMD microcode problem - Fam15h ( FYI )
Date: Thu, 24 May 2018 22:32:57
Message-Id: CAC=wYCFh0+qrAWscTOeGYo=KoMVV4Yz8xxS2VE_FTEfV4M63HQ@mail.gmail.com
In Reply to: [gentoo-user] AMD microcode problem - Fam15h ( FYI ) by Corbin Bird
1 On Thu, May 24, 2018 at 12:31 PM, Corbin Bird <corbinbird@×××××××.net>
2 wrote:
3
4 > FYI :
5 >
6 > Did the microcode update, compiled and installed the 4.9.101 kernel with
7 > it.
8 > After rebooting, I started having kernel hard lock problems.
9 >
10 > Before compiling / installing kernel 4.9.102, I made an addition to the
11 > CFLAGS var in make.conf : -mno-lwp
12 > ( 'lwp' is 'Light Weight Profiling' )
13 >
14 > No kernel hard locks after the reboot.
15 >
16 > Lesson Learned :
17 > The kernel needs to be compiled, installed, system rebooted,
18 > re-compiled, re-installed and re-booted again.
19 > Otherwise the kernel compile process doesn't adjust to the removal of
20 > instruction sets.
21 > The 'make.conf' entry is to catch any other uses, system wide.
22 >
23 >
24 > Config Info :
25 >
26 > Using 'sys-kernel/gentoo-sources' USE flags : experimental modules symlink
27 >
28 > -march=bdver2
29 >
30 > kernel .config settings :
31 > # CONFIG_PROFILING is not set
32 > CONFIG_HAVE_OPROFILE=y
33 > CONFIG_OPROFILE_NMI_TIMER=y
34 > CONFIG_KPROBES=y
35 >
36 >
37 For me dmesg says;
38 [ 1.538275] microcode: CPU0: patch_level=0x06000852
39
40 but i still have lwp in /proc/cpuinfo. Are you at 0x06000852 ?

Replies

Subject Author
Re: [gentoo-user] AMD microcode problem - Fam15h ( FYI ) Corbin Bird <corbinbird@×××××××.net>