On Thu, Jul 23, 2020 at 03:17:04PM +0200, Thomas Gleixner wrote: > 2) Instruction synchronization > > Trying to do instruction synchronization delayed is a clear recipe > for hard to diagnose failures. Just because it blew not up in your > face does not make it correct in any way. It's broken by design and > violates _all_ rules of safe instruction patching and introduces a > complete trainwreck in x86 NMI processing. > > If you really think that this is correct, then please have at least > the courtesy to come up with a detailed and precise argumentation > why this is a valid approach. > > While writing that up you surely will find out why it is not. So delaying the sync_core() IPIs for kernel text patching _might_ be possible, but it very much wants to be a separate patchset and not something hidden inside a 'gem' like this.
