perf: MAP_EXECUTABLE does not indicate VM_MAYEXEC

Patch series "perf/binfmt/mm: remove in-tree usage of MAP_EXECUTABLE".

Stumbling over the history of MAP_EXECUTABLE, I noticed that we still have
some in-tree users that we can get rid of.

This patch (of 3):

Before commit e9714ac ("mm: kill vma flag VM_EXECUTABLE and
mm->num_exe_file_vmas"), VM_EXECUTABLE indicated MAP_EXECUTABLE.
MAP_EXECUTABLE is nowadays essentially ignored by the kernel and does not
relate to VM_MAYEXEC.

Link: https://lkml.kernel.org/r/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Fixes: f972eb6 ("perf: Pass protection and flags bits through mmap2 interface")
Signed-off-by: David Hildenbrand <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Acked-by: "Eric W. Biederman" <[email protected]>
Reviewed-by: Kees Cook <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Cc: Alexander Viro <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Greg Ungerer <[email protected]>
Cc: Mike Rapoport <[email protected]>
Cc: Catalin Marinas <[email protected]>
Cc: Kevin Brodsky <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Feng Tang <[email protected]>
Cc: Don Zickus <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

kernel/events/core.c

@@ -8301,8 +8301,6 @@ static void perf_event_mmap_event(struct perf_mmap_event *mmap_event)
 
 	if (vma->vm_flags & VM_DENYWRITE)
 		flags |= MAP_DENYWRITE;
-	if (vma->vm_flags & VM_MAYEXEC)
-		flags |= MAP_EXECUTABLE;
 	if (vma->vm_flags & VM_LOCKED)
 		flags |= MAP_LOCKED;
 	if (is_vm_hugetlb_page(vma))