On Fri, Jul 09, 2021 at 12:31:45PM +1200, Michael Schmitz wrote:
That patch works fine on a casual test. What you did to __constant_copy_to_user() does not appear to matter - but I haven't put the system under any kind of stress yet. I'm a little reluctant to do that (recovering from a trashed boot disk is a little dicey), I'll probably only try that with your changes to __constant_copy_to_user() from commit d36105c942e0 backed out.
As Linus pointed out, small copy_to_user basically doesn't happen as we have switched all the suspect call sites to just use put_user. Geert: do you care about __constant_copy_to_user at all, or can we just kill it (as well as the copy_from_user side)?
