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From 5ddb3b822086c04493be468cc27e356cf174307d Mon Sep 17 00:00:00 2001
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From: Thomas Huth <thuth@redhat.com>
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Date: Wed, 22 Nov 2017 10:43:30 +0100
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Subject: [PATCH 13/15] s390-ccw: Fix alignment for CCW1
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RH-Author: Thomas Huth <thuth@redhat.com>
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Message-id: <1511347411-16226-3-git-send-email-thuth@redhat.com>
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Patchwork-id: 77775
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O-Subject: [RHEL-7.5 qemu-kvm-ma PATCH 2/3] s390-ccw: Fix alignment for CCW1
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Bugzilla: 1514352
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RH-Acked-by: David Hildenbrand <david@redhat.com>
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RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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From: Farhan Ali <alifm@linux.vnet.ibm.com>
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The commit 198c0d1f9df8c4 s390x/css: check ccw address validity
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exposes an alignment issue in ccw bios.
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According to PoP the CCW must be doubleword aligned. Let's fix
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this in the bios.
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Cc: qemu-stable@nongnu.org
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Signed-off-by: Farhan Ali <alifm@linux.vnet.ibm.com>
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Reviewed-by: Halil Pasic <pasic@linux.vnet.ibm.com>
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Reviewed-by: Eric Farman <farman@linux.vnet.ibm.com>
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Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
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Message-Id: <3ed8b810b6592daee6a775037ce21f850e40647d.1503667215.git.alifm@linux.vnet.ibm.com>
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Signed-off-by: Cornelia Huck <cohuck@redhat.com>
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(cherry picked from commit 3a1e4561ad63b303b092387ae006bd41468ece63)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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pc-bios/s390-ccw/cio.h | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/pc-bios/s390-ccw/cio.h b/pc-bios/s390-ccw/cio.h
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index f5b4549..55eaeee 100644
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--- a/pc-bios/s390-ccw/cio.h
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+++ b/pc-bios/s390-ccw/cio.h
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@@ -133,7 +133,7 @@ struct ccw1 {
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__u8 flags;
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__u16 count;
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__u32 cda;
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-} __attribute__ ((packed));
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+} __attribute__ ((packed, aligned(8)));
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#define CCW_FLAG_DC 0x80
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#define CCW_FLAG_CC 0x40
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--
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1.8.3.1
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