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Tags: kernel   grub  
Link: πŸ” See Original Answer on Ask Ubuntu πŸ”—

Title: How do I disable all spectre/meltdown/l1tf mitigations on kernel 4.15.0?
ID: /2019/10/11/How-do-I-disable-all-spectre_meltdown_l1tf-mitigations-on-kernel-4.15.0_
Created: October 11, 2019
Upload: November 24, 2022    Layout:  post
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I can’t answer your VPS provider side of the question, but in my grub I use:

GRUB_CMDLINE_LINUX_DEFAULT="noplymouth loglevel=4 fastboot acpiphp.disable=1 pcie_aspm=force vt.handoff=7 i915.fastboot=1 nopti nospectre_v2 nospec mem_sleep_default=deep nouveau.nomodeset=0"

# Aug 16/2018 - i915.edp_vswing=2 comes from Ask Ubuntu Dell XPS 15 9350 screen flickering:
# Aug 11/2018 - 10% performance boost eliminating Meltdown & Spectre support:
#               "nopti nospectre_v2 nospec"

I left some of the grub comments in this answer in case that helps.

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