from Hacker News

Retbleed fix slugs Linux VM performance by up to 70 percent

by slivanes on 9/13/22, 1:43 AM with 1 comments

• by tux1968 on 9/13/22, 2:54 AM

  If you're not concerned about being vulnerable to such attacks, booting your kernel with:

      retbleed=off
  

  Restores the lost performance. Personally, I run with:

      mitigations=off
  

  in the kernel options to avoid all the spectre slow downs.