15 Feb
2022
15 Feb
'22
5:10 p.m.
On 2/15/22 08:19, Brian Geffon wrote:
This only applies before 5.13, so 5.10.y and 5.4.y, the behavior decoupled PKRU from xstate in a long series from Thomas Gleixner, but the first commit where this would have been fixed in 5.13 would be:
commit 954436989cc550dd91aab98363240c9c0a4b7e23 Author: Thomas Gleixner tglx@linutronix.de Date: Wed Jun 23 14:02:21 2021 +0200
x86/fpu: Remove PKRU handling from switch_fpu_finish()
Could you also describe why the >=5.13 fix for this isn't suitable for older kernels?