diff options
| author | Claudio Imbrenda | 2023-11-09 13:36:24 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2023-12-13 18:39:29 +0100 |
| commit | 6d6314c3dbacd15506aa660a6ada4fcae8da7650 (patch) | |
| tree | 95754d099a8e0a5413a705704e92b64188f7a975 | |
| parent | be297475cabcb860e65e1ce07724816cc96d792a (diff) | |
KVM: s390/mm: Properly reset no-dat
commit 27072b8e18a73ffeffb1c140939023915a35134b upstream.
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.
Cc: <stable@vger.kernel.org>
Reviewed-by: Nico Boehr <nrb@linux.ibm.com>
Message-ID: <20231109123624.37314-1-imbrenda@linux.ibm.com>
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | arch/s390/mm/pgtable.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c index 4909dcd762e8..9977d637f836 100644 --- a/arch/s390/mm/pgtable.c +++ b/arch/s390/mm/pgtable.c @@ -731,7 +731,7 @@ 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(); } |