On Mon, May 16, 2022, David Matlack wrote: > Currently make_huge_page_split_spte() assumes execute permissions can be > granted to any 4K SPTE when splitting huge pages. This is true for the > TDP MMU but is not necessarily true for the shadow MMU, since KVM may be > shadowing a non-executable huge page. > > To fix this, pass in the role of the child shadow page where the huge > page will be split and derive the execution permission from that. This > is correct because huge pages are always split with direct shadow page > and thus the shadow page role contains the correct access permissions. > > No functional change intended. > > Signed-off-by: David Matlack <dmatlack@xxxxxxxxxx> > --- Reviewed-by: Sean Christopherson <seanjc@xxxxxxxxxx>
