Re: [patch 03/18] entry: Provide [syscall_]enter_from_user_mode_randomize_stack()
Philippe Mathieu-Daudé <[email protected]>
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On 7/7/26 21:06, Thomas Gleixner wrote: > Randomizing the syscall stack can only happen after state is established > via enter_from_user_mode() or syscall_enter_from_user_mode(). The earlier > it happens the better. > > Provide two new macros to consolidate that: > > - enter_from_user_mode_randomize_stack() > enter_from_user_mode(); > add_random_kstack_offset_irqsoff(); > > - syscall_enter_from_user_mode_randomize_stack() > enter_from_user_mode_randomize_stack(); > syscall_enter_from_user_mode_work(); > > to reduce boiler plate code. > > Those are macros and not inline functions as the latter would limit the > stack randomization scope to the inline function itself. > > Signed-off-by: Thomas Gleixner <[email protected]> > --- > include/linux/entry-common.h | 56 +++++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 56 insertions(+) Reviewed-by: Philippe Mathieu-Daudé <[email protected]>