Meltdown – Spectre - Was: kernel 4.4.0-108 / 16.04 LTS does not boot anymore

[Ralf Mardorf]

On Fri, 12 Jan 2018 03:10:42 +0000 (UTC), Jonesy via ubuntu-users wrote:
>kernel 4.4.0-109 is available

Hi,

is it using a backported KPTI patch set, respl. is it possible to
disable it by booting with nopti [1]? I don't have the time to read
changelogs at the moment.

Since a DAW not necessarily is connected to the Internet at all, but
requires best performance, disabling might be better, than using the
KPTI patch set and suffering from loss of performance. I read a German
article about extreme performance loss for SSD usage, but the article
doesn't mention Linux.

However, I didn't make tests, just installed 4.4.0.109.114 a few
minutes ago.

[root at archlinux moonstudio]# systemd-nspawn -q apt list linux-lowlatency -qq
linux-lowlatency/xenial-updates,xenial-security,now 4.4.0.109.114 amd64 [installed]

Regards,
Ralf

[1] https://lwn.net/Articles/741878/

-- 
$ pacman -Q linux{,-rt{,-cornflower,-pussytoes}}|awk '{print $2}'
4.14.13-1
4.14.12_rt10-1
4.11.12_rt16-1
4.14.8_rt9-2