On Mon, Mar 19, 2018 at 2:31 PM, Boris Ostrovsky <[email protected]> wrote: > Writing to it directly does not work for Xen PV guests.
Whoops, my bad. Acked-by: Andy Lutomirski <[email protected]> > > Signed-off-by: Boris Ostrovsky <[email protected]> > --- > arch/x86/entry/vsyscall/vsyscall_64.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/x86/entry/vsyscall/vsyscall_64.c > b/arch/x86/entry/vsyscall/vsyscall_64.c > index 8560ef68a9d6..317be365bce3 100644 > --- a/arch/x86/entry/vsyscall/vsyscall_64.c > +++ b/arch/x86/entry/vsyscall/vsyscall_64.c > @@ -347,7 +347,7 @@ void __init set_vsyscall_pgtable_user_bits(pgd_t *root) > set_pgd(pgd, __pgd(pgd_val(*pgd) | _PAGE_USER)); > p4d = p4d_offset(pgd, VSYSCALL_ADDR); > #if CONFIG_PGTABLE_LEVELS >= 5 > - p4d->p4d |= _PAGE_USER; > + set_p4d(p4d, __p4d(p4d_val(*p4d) | _PAGE_USER)); > #endif > pud = pud_offset(p4d, VSYSCALL_ADDR); > set_pud(pud, __pud(pud_val(*pud) | _PAGE_USER)); > -- > 2.14.3 >
