Sorry, I had copy-pasted the wrong email address for Gerald, fixed now On Thu, 9 Nov 2023 13:36:24 +0100 Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx> wrote: > When the CMMA state needs to be reset, the no-dat bit also needs to be > reset. Failure to do so could cause issues in the guest, since the > guest expects the bit to be cleared after a reset. > > Signed-off-by: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx> > --- > arch/s390/mm/pgtable.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c > index 3bd2ab2a9a34..5cb92941540b 100644 > --- a/arch/s390/mm/pgtable.c > +++ b/arch/s390/mm/pgtable.c > @@ -756,7 +756,7 @@ void ptep_zap_unused(struct mm_struct *mm, unsigned long addr, > pte_clear(mm, addr, ptep); > } > if (reset) > - pgste_val(pgste) &= ~_PGSTE_GPS_USAGE_MASK; > + pgste_val(pgste) &= ~(_PGSTE_GPS_USAGE_MASK | _PGSTE_GPS_NODAT); > pgste_set_unlock(ptep, pgste); > preempt_enable(); > }
