From: Farhan Ali <al...@linux.vnet.ibm.com>
The commit 198c0d1f9df8c4 s390x/css: check ccw address validity
exposes an alignment issue in ccw bios.
According to PoP the CCW must be doubleword aligned. Let's fix
this in the bios.
Cc: qemu-sta...@nongnu.org
Signed-off-by: Farhan Ali <al...@linux.vnet.ibm.com>
Reviewed-by: Halil Pasic <pa...@linux.vnet.ibm.com>
Reviewed-by: Eric Farman <far...@linux.vnet.ibm.com>
Acked-by: Christian Borntraeger <borntrae...@de.ibm.com>
Message-Id:
<3ed8b810b6592daee6a775037ce21f850e40647d.1503667215.git.al...@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <coh...@redhat.com>
(cherry picked from commit 3a1e4561ad63b303b092387ae006bd41468ece63)
Signed-off-by: Michael Roth <mdr...@linux.vnet.ibm.com>
---
pc-bios/s390-ccw/cio.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/pc-bios/s390-ccw/cio.h b/pc-bios/s390-ccw/cio.h
index f5b4549ea3..55eaeee4b6 100644
--- a/pc-bios/s390-ccw/cio.h
+++ b/pc-bios/s390-ccw/cio.h
@@ -133,7 +133,7 @@ struct ccw1 {
__u8 flags;
__u16 count;
__u32 cda;
-} __attribute__ ((packed));
+} __attribute__ ((packed, aligned(8)));
#define CCW_FLAG_DC 0x80
#define CCW_FLAG_CC 0x40
--
2.11.0
