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@xxxxxxxxxxxxx> > 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?
