On 01/05/2018 10:19 AM, Jiri Kosina wrote: > --- a/arch/x86/platform/efi/efi_64.c > +++ b/arch/x86/platform/efi/efi_64.c > @@ -95,6 +95,12 @@ pgd_t * __init efi_call_phys_prolog(void > save_pgd[pgd] = *pgd_offset_k(pgd * PGDIR_SIZE); > vaddress = (unsigned long)__va(pgd * PGDIR_SIZE); > set_pgd(pgd_offset_k(pgd * PGDIR_SIZE), > *pgd_offset_k(vaddress)); > + /* > + * pgprot API doesn't clear it for PGD > + * > + * Will be brought back automatically in _epilog() > + */ > + pgd_offset_k(pgd * PGDIR_SIZE)->pgd &= ~_PAGE_NX; > } > __flush_tlb_all();
Wait a sec... Where does the _PAGE_USER come from? Shouldn't we see the &init_mm in there and *not* set _PAGE_USER?
