Re: [PATCH 0/6] x86/entry: disallow #DB more

2020-05-29 Thread Peter Zijlstra
On Fri, May 29, 2020 at 07:05:54AM +0800, Lai Jiangshan wrote: > On Fri, May 29, 2020 at 6:48 AM Peter Zijlstra wrote: > > > > On Fri, May 29, 2020 at 06:42:46AM +0800, Lai Jiangshan wrote: > > > On Fri, May 29, 2020 at 4:25 AM Peter Zijlstra > > > wrote: > > > > > > > > These patches disallow #

Re: [PATCH 0/6] x86/entry: disallow #DB more

2020-05-28 Thread Lai Jiangshan
On Fri, May 29, 2020 at 6:48 AM Peter Zijlstra wrote: > > On Fri, May 29, 2020 at 06:42:46AM +0800, Lai Jiangshan wrote: > > On Fri, May 29, 2020 at 4:25 AM Peter Zijlstra wrote: > > > > > > These patches disallow #DB during NMI/#MC and allow removing a lot of > > > fugly code. > > > > > > > Hel

Re: [PATCH 0/6] x86/entry: disallow #DB more

2020-05-28 Thread Peter Zijlstra
On Fri, May 29, 2020 at 06:42:46AM +0800, Lai Jiangshan wrote: > On Fri, May 29, 2020 at 4:25 AM Peter Zijlstra wrote: > > > > These patches disallow #DB during NMI/#MC and allow removing a lot of fugly > > code. > > > > Hello > > Will #DB be allowed in #DF? No, that whole thing is noinstr.

Re: [PATCH 0/6] x86/entry: disallow #DB more

2020-05-28 Thread Lai Jiangshan
On Fri, May 29, 2020 at 4:25 AM Peter Zijlstra wrote: > > These patches disallow #DB during NMI/#MC and allow removing a lot of fugly > code. > Hello Will #DB be allowed in #DF? Thanks Lai > Patch #6 should probably wait until we've got the KGDB situation sorted > because applying that makes