diff options
| author | David Hildenbrand <david@redhat.com> | 2021-09-03 17:55:03 +0200 |
|---|---|---|
| committer | Thomas Huth <thuth@redhat.com> | 2021-09-06 16:24:05 +0200 |
| commit | fe00c705fec7bf20f5832fd6d8245fd554097cfc (patch) | |
| tree | f7d6dec769c36bab51cfae8e8811b1eeed42c7fa /target/s390x/cpu_models.c | |
| parent | 634a0b51cb25800ebc585862121f764d02de7a28 (diff) | |
s390x/tcg: fix ignoring bit 63 when setting the storage key in SSKE
Right now we could set an 8-bit storage key via SSKE and retrieve it
again via ISKE, which is against the architecture description:
SSKE:
"
The new seven-bit storage-key value, or selected bits
thereof, is obtained from bit positions 56-62 of gen-
eral register R 1 . The contents of bit positions 0-55
and 63 of the register are ignored.
"
ISKE:
"
The seven-bit storage key is inserted in bit positions
56-62 of general register R 1 , and bit 63 is set to zero.
"
Let's properly ignore bit 63 to create the correct seven-bit storage key.
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210903155514.44772-3-david@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Diffstat (limited to 'target/s390x/cpu_models.c')
0 files changed, 0 insertions, 0 deletions