On Tue, Aug 14, 2018 at 05:00:57PM +0200, Norbert Manthey wrote: > Signed-off-by: Norbert Manthey <nmanthey@xxxxxxxxx> > --- > check_user_data2.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/check_user_data2.c b/check_user_data2.c > index 5d5606c..d95ba1d 100644 > --- a/check_user_data2.c > +++ b/check_user_data2.c > @@ -1238,6 +1238,9 @@ void check_user_data2(int id) > for (i = 0; i < ARRAY_SIZE(xen_from_guest_funcs); i++) > add_function_hook(xen_from_guest_funcs[i], &match_user_copy, INT_PTR(0)); > > + // the Xen equivalent to kvm_register_read > + add_function_assign_hook("acpi_hw_register_read", &match_user_copy, NULL); ^^^^ This should be INT_PTR(1) because it's supposed to say which parameter gets set. It start counting parameters from zero. regards, dan carpenter