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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2017-08-03 14:27:30 +0200 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2017-08-21 15:34:54 +0200 |
| commit | 857b8de96795646c5891cf44ae6fb19b9ff74bf9 (patch) | |
| tree | 3afa2096610f6a5f76f8234c0e10ee3233003c71 /lib/iomap.c | |
| parent | KVM: s390: sthyi: fix sthyi inline assembly (diff) | |
| download | linux-857b8de96795646c5891cf44ae6fb19b9ff74bf9.tar.xz linux-857b8de96795646c5891cf44ae6fb19b9ff74bf9.zip | |
KVM: s390: sthyi: fix specification exception detection
sthyi should only generate a specification exception if the function
code is zero and the response buffer is not on a 4k boundary.
The current code would also test for unknown function codes if the
response buffer, that is currently only defined for function code 0,
is not on a 4k boundary and incorrectly inject a specification
exception instead of returning with condition code 3 and return code 4
(unsupported function code).
Fix this by moving the boundary check.
Fixes: 95ca2cb57985 ("KVM: s390: Add sthyi emulation")
Cc: <stable@vger.kernel.org> # 4.8+
Reviewed-by: Janosch Frank <frankja@linux.vnet.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'lib/iomap.c')
0 files changed, 0 insertions, 0 deletions