diff options
| author | Pierre Morel <pmorel@linux.ibm.com> | 2021-02-19 14:39:33 +0100 |
|---|---|---|
| committer | Cornelia Huck <cohuck@redhat.com> | 2021-03-04 11:23:35 +0100 |
| commit | a54b8ac340c20531daa89929c5ce7fed89fa401d (patch) | |
| tree | 6b90df213eb4e65f782c0a3ab905395f27e670a5 /target/s390x | |
| parent | 151fcdfd628a396845b275831e920ddbc10a9f18 (diff) | |
css: SCHIB measurement block origin must be aligned
The Measurement Block Origin inside the SCHIB is used when
Measurement Block format 1 is in used and must be aligned
on 64 bytes otherwise an operand exception is recognized
when issuing the Modify Sub CHannel (MSCH) instruction.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1613741973-3711-2-git-send-email-pmorel@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Diffstat (limited to 'target/s390x')
| -rw-r--r-- | target/s390x/ioinst.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/target/s390x/ioinst.c b/target/s390x/ioinst.c index a412926d27..1ee11522e1 100644 --- a/target/s390x/ioinst.c +++ b/target/s390x/ioinst.c @@ -121,6 +121,12 @@ static int ioinst_schib_valid(SCHIB *schib) if (be32_to_cpu(schib->pmcw.chars) & PMCW_CHARS_MASK_XMWME) { return 0; } + /* for MB format 1 bits 26-31 of word 11 must be 0 */ + /* MBA uses words 10 and 11, it means align on 2**6 */ + if ((be16_to_cpu(schib->pmcw.chars) & PMCW_CHARS_MASK_MBFC) && + (be64_to_cpu(schib->mba) & 0x03fUL)) { + return 0; + } return 1; } |