tree b933605bce726e3cbfaf0ffba9af73b6400bfeae
parent 86b68c3873a82144033a82707781829e3f7b3859
author Sebastian Ott <sebott@linux.vnet.ibm.com> 1445854528 +0100
committer Martin Schwidefsky <schwidefsky@de.ibm.com> 1447056649 +0100

s390/pci_dma: unify label of invalid translation table entries

Newly allocated translation table entries are flagged as invalid
and protected. If an existing translation table entry is invalidated,
the protection flag is left unchanged.

If a page (with invalid and protection flag set) is accessed it's
undefined which type of exception we'll receive.

Make sure to always set the invalid flag only.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>