** Changed in: linux (Ubuntu Focal)
Status: Triaged => Won't Fix
** Changed in: linux (Ubuntu)
Status: Triaged => Won't Fix
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https://bugs.launchpad.net/bugs/2042564
Title:
I performed a bisect between the 5.4 and 5.15 kernels. The performance
regression was introduced by a stable update in 5.15.57 by the following
commit:
62b4db57eefec ("x86/entry: Add kernel IBRS implementation")
This commit applies IBRS kernel mitigation for Spectre_v2. IBRS is:
Indirect
