9ae3a8
From cbe9fe3834d08758bc787ac0800afb9ece6ed782 Mon Sep 17 00:00:00 2001
9ae3a8
From: Luiz Capitulino <lcapitulino@redhat.com>
9ae3a8
Date: Tue, 12 Nov 2013 17:10:04 +0100
9ae3a8
Subject: [PATCH 01/14] pc: drop virtio-balloon-pci event_idx compat property
9ae3a8
9ae3a8
RH-Author: Luiz Capitulino <lcapitulino@redhat.com>
9ae3a8
Message-id: <20131112121004.12eb9431@redhat.com>
9ae3a8
Patchwork-id: 55664
9ae3a8
O-Subject: [RHEL-7.0 qemu-kvm PATCH] pc: drop virtio-balloon-pci event_idx compat property
9ae3a8
Bugzilla: 1029539
9ae3a8
RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
9ae3a8
RH-Acked-by: Eduardo Habkost <ehabkost@redhat.com>
9ae3a8
RH-Acked-by: Juan Quintela <quintela@redhat.com>
9ae3a8
9ae3a8
Bugzilla: 1029539
9ae3a8
Brew-build: https://brewweb.devel.redhat.com/taskinfo?taskID=6564546
9ae3a8
9ae3a8
Due to a bug, RHEL6 has never disabled the virtio-balloon-pci
9ae3a8
driver's event_idx property for machine types rhel6.0.0 and
9ae3a8
rhel6.1.0. The end result is that migration from RHEL6 to RHEL7
9ae3a8
fails for those machine types.
9ae3a8
9ae3a8
The most obvious way to fix this problem is to fix RHEL6 to
9ae3a8
really disable the property. But this won't solve the problem
9ae3a8
for old RHEL6 binaries. Actually, it will make migration
9ae3a8
incompatible between old RHEL6 binaries and newer ones.
9ae3a8
9ae3a8
This commit makes the mistake official instead by dropping
9ae3a8
the compat property for RHEL7. This fixes migration between
9ae3a8
RHEL6 and RHEL7 without adding any new problems.
9ae3a8
9ae3a8
Signed-off-by: Luiz Capitulino <lcapitulino@gmail.com>
9ae3a8
---
9ae3a8
 hw/i386/pc_piix.c | 9 +++++----
9ae3a8
 1 file changed, 5 insertions(+), 4 deletions(-)
9ae3a8
9ae3a8
PS: Will post RHEL6.6 patch later.
9ae3a8
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
9ae3a8
---
9ae3a8
 hw/i386/pc_piix.c |    9 +++++----
9ae3a8
 1 files changed, 5 insertions(+), 4 deletions(-)
9ae3a8
9ae3a8
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
9ae3a8
index 8bae4c5..e6771a9 100644
9ae3a8
--- a/hw/i386/pc_piix.c
9ae3a8
+++ b/hw/i386/pc_piix.c
9ae3a8
@@ -1030,6 +1030,11 @@ static QEMUMachine pc_machine_rhel620 = {
9ae3a8
     DEFAULT_MACHINE_OPTIONS,
9ae3a8
 };
9ae3a8
 
9ae3a8
+/* 
9ae3a8
+ * NOTE: We don't have the event_idx compat entry for the
9ae3a8
+ * virtio-balloon-pci driver because RHEL6 doesn't disable
9ae3a8
+ * it either due to a bug (see RHBZ 1029539 fo more info)
9ae3a8
+ */
9ae3a8
 #define PC_RHEL6_1_COMPAT \
9ae3a8
     PC_RHEL6_2_COMPAT,\
9ae3a8
     {\
9ae3a8
@@ -1061,10 +1066,6 @@ static QEMUMachine pc_machine_rhel620 = {
9ae3a8
         .property = "event_idx",\
9ae3a8
         .value    = "off",\
9ae3a8
     },{\
9ae3a8
-        .driver   = "virtio-balloon-pci",\
9ae3a8
-        .property = "event_idx",\
9ae3a8
-        .value    = "off",\
9ae3a8
-    },{\
9ae3a8
         .driver   = "usb-kbd",\
9ae3a8
         .property = "serial",\
9ae3a8
         .value    = "1",\
9ae3a8
-- 
9ae3a8
1.7.1
9ae3a8