On Wed, Sep 25, 2019 at 08:10:21AM -0700, Yu-cheng Yu wrote: > From: Fenghua Yu <[email protected]> > > Currently, fpu__clear() clears all fpregs and xstates. Once XSAVES > supervisor states are introduced, supervisor settings must remain active > for signals;
I could very well use an example here: for signal handling supervisor states, I'm guessing this would be something CET-related so some text about a usage scenario would be very helpful here. > it is necessary to have separate functions: > > - Create fpu__clear_user_states(): clear only user settings for signals; > - Create fpu__clear_all(): clear both user and supervisor settings in > flush_thread(). > > Also modify copy_init_fpstate_to_fpregs() to take a mask from above two > functions. > > Co-developed-by: Yu-cheng Yu <[email protected]> > Signed-off-by: Yu-cheng Yu <[email protected]> > Signed-off-by: Fenghua Yu <[email protected]> As before... -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette
