On Fri, 1 Feb 2019 18:42:29 -0800 Andy Lutomirski <l...@kernel.org> wrote:
> On Fri, Feb 1, 2019 at 12:54 PM Chang S. Bae <chang.seok....@intel.com> wrote: > > > > For testing (or root-only) purposes, the new flag will serve to tag the > > kernel taint accurately. > > > > When adding a new feature support, patches need to be incrementally > > applied and tested with temporal parameters. Currently, there is no flag > > for this usage. > > I think this should be reviewed by someone like akpm. akpm, for > background, this is part of an x86 patch series. If only part of the > series is applied, the kernel will be blatantly insecure (but still > functional and useful for testing and bisection), and this taint flag > will be set if this kernel is booted. With the whole series applied, > there are no users of the taint flag in the kernel. > > Do you think this is a good idea? What does "temporal parameters" mean? A complete description of this testing process would help. I sounds a bit strange. You mean it assumes that people will partially apply the series to test its functionality? That would be inconvenient. - Can the new and now-unused taint flag be removed again at end-of-series? - It would be a lot more convenient if we had some means of testing after the whole series is applied, on a permanent basis - some debugfs flag, perhaps?
