These patches disallow #DB during NMI/#MC and allow removing a lot of fugly code.
Patch #6 should probably wait until we've got the KGDB situation sorted because applying that makes a bad situation worse.
- [PATCH 0/6] x86/entry: disallow #DB more Peter Zijlstra
- [RFC][PATCH 6/6] x86/entry: Remove DBn stacks Peter Zijlstra
- Re: [RFC][PATCH 6/6] x86/entry: Remove DBn stacks Lai Jiangshan
- Re: [RFC][PATCH 6/6] x86/entry: Remove DBn st... Peter Zijlstra
- [PATCH 5/6] x86/entry: Remove debug IDT frobbing Peter Zijlstra
- [PATCH 1/6] x86/entry: Introduce local_db_{save,resto... Peter Zijlstra
- Re: [PATCH 1/6] x86/entry: Introduce local_db_{sa... Andrew Cooper
- Re: [PATCH 1/6] x86/entry: Introduce local_db... Peter Zijlstra
- Re: [PATCH 1/6] x86/entry: Introduce loca... Peter Zijlstra
- Re: [PATCH 1/6] x86/entry: Introduce... Andy Lutomirski
- Re: [PATCH 1/6] x86/entry: Intro... Peter Zijlstra
