From d160024fe52cd4970ee80904dbdc7a22ddf86c96 Mon Sep 17 00:00:00 2001
From: "Michael S. Tsirkin" <mst@redhat.com>
Date: Tue, 4 Feb 2014 23:29:30 +0200
Subject: pc_piix: enable legacy hotplug for Xen

xenfv has no fwcfg and so does not load acpi from QEMU.
as such new acpi features don't work.

Reported-by: Sander Eikelenboom <linux@eikelenboom.it>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
 hw/i386/pc_piix.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'hw/i386')

diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index a327d71fb1..1acd2b2a20 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -793,6 +793,17 @@ static QEMUMachine xenfv_machine = {
     .max_cpus = HVM_MAX_VCPUS,
     .default_machine_opts = "accel=xen",
     .hot_add_cpu = pc_hot_add_cpu,
+    .compat_props = (GlobalProperty[]) {
+        /* xenfv has no fwcfg and so does not load acpi from QEMU.
+         * as such new acpi features don't work.
+         */
+        {
+            .driver   = "PIIX4_PM",
+            .property = "acpi-pci-hotplug-with-bridge-support",
+            .value    = "off",
+        },
+        { /* end of list */ }
+    },
 };
 #endif
 
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