On Wed, Jun 22, 2022 at 6:23 PM Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx> wrote: > > LAM_U48 allows to encode 15 bits of tags into address. > > LAM_U48 steals bits above 47-bit for tags and makes it impossible for > userspace to use full address space on 5-level paging machine. > > Make these features mutually exclusive: whichever gets enabled first > blocks the other one. > > Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx> > @@ -206,11 +209,15 @@ const char *arch_vma_name(struct vm_area_struct *vma) > * the failure of such a fixed mapping request, so the restriction is not > * applied. > */ > -bool mmap_address_hint_valid(unsigned long addr, unsigned long len) > +bool mmap_address_hint_valid(struct mm_struct *mm, > + unsigned long addr, unsigned long len) Please make sure to reflect the newly added parameter in the doc comment. This may also apply to other patches in the series. -- Alexander Potapenko Software Engineer Google Germany GmbH Erika-Mann-Straße, 33 80636 München Geschäftsführer: Paul Manicle, Liana Sebastian Registergericht und -nummer: Hamburg, HRB 86891 Sitz der Gesellschaft: Hamburg Diese E-Mail ist vertraulich. Falls Sie diese fälschlicherweise erhalten haben sollten, leiten Sie diese bitte nicht an jemand anderes weiter, löschen Sie alle Kopien und Anhänge davon und lassen Sie mich bitte wissen, dass die E-Mail an die falsche Person gesendet wurde. This e-mail is confidential. If you received this communication by mistake, please don't forward it to anyone else, please erase all copies and attachments, and please let me know that it has gone to the wrong person.
