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-rw-r--r--pc-bios/s390-ccw/cio.h2
1 files changed, 1 insertions, 1 deletions
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