diff --git a/0001-virtio-serial-fix-virtio-config-size.patch b/0001-virtio-serial-fix-virtio-config-size.patch
new file mode 100644
index 0000000..e3c381a
--- /dev/null
+++ b/0001-virtio-serial-fix-virtio-config-size.patch
@@ -0,0 +1,43 @@
+From: "Michael S. Tsirkin" <mst@redhat.com>
+Date: Wed, 25 Mar 2015 12:41:26 +0100
+Subject: [PATCH] virtio-serial: fix virtio config size
+
+commit 9b70c1790acacae54d559d38ca69186a85040bb8
+    virtio-serial: switch to standard-headers
+
+changes virtio_console_config size from 8 to 12 bytes:
+it adds an optional 4 byte emerg_wr field.
+
+As this crosses a power of two boundary, this changes the PCI BAR size,
+which breaks migration compatibility with old qemu machine types.
+It's probably a problem for other transports as well.
+
+As a temporary fix, as we don't yet support this new field anyway,
+simply make the config size smaller at init time.
+
+Long terms we probably want something along the lines
+of virtio_net_set_config_size.
+
+Reported-by: Cole Robinson <crobinso@redhat.com>
+Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
+Message-Id: <1427283599-12789-1-git-send-email-mst@redhat.com>
+---
+ hw/char/virtio-serial-bus.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/hw/char/virtio-serial-bus.c b/hw/char/virtio-serial-bus.c
+index d14e872..e336bdb 100644
+--- a/hw/char/virtio-serial-bus.c
++++ b/hw/char/virtio-serial-bus.c
+@@ -980,8 +980,10 @@ static void virtio_serial_device_realize(DeviceState *dev, Error **errp)
+         return;
+     }
+ 
++    /* We don't support emergency write, skip it for now. */
++    /* TODO: cleaner fix, depending on host features. */
+     virtio_init(vdev, "virtio-serial", VIRTIO_ID_CONSOLE,
+-                sizeof(struct virtio_console_config));
++                offsetof(struct virtio_console_config, emerg_wr));
+ 
+     /* Spawn a new virtio-serial bus on which the ports will ride as devices */
+     qbus_create_inplace(&vser->bus, sizeof(vser->bus), TYPE_VIRTIO_SERIAL_BUS,
diff --git a/qemu.spec b/qemu.spec
index f99b136..8e81884 100644
--- a/qemu.spec
+++ b/qemu.spec
@@ -153,7 +153,7 @@
 Summary: QEMU is a FAST! processor emulator
 Name: qemu
 Version: 2.3.0
-Release: 0.1.rc0%{?dist}
+Release: 0.2.rc1%{?dist}
 Epoch: 2
 License: GPLv2+ and LGPLv2+ and BSD
 Group: Development/Tools
@@ -169,7 +169,7 @@ ExclusiveArch: %{kvm_archs}
 %endif
 
 #Source0: http://wiki.qemu-project.org/download/%{name}-%{version}.tar.bz2
-Source0: http://wiki.qemu-project.org/download/%{name}-%{version}-rc0.tar.bz2
+Source0: http://wiki.qemu-project.org/download/%{name}-%{version}-rc1.tar.bz2
 
 Source1: qemu.binfmt
 
@@ -194,6 +194,9 @@ Source12: bridge.conf
 # qemu-kvm back compat wrapper
 Source13: qemu-kvm.sh
 
+# Fix virtconsole migration
+Patch0001: 0001-virtio-serial-fix-virtio-config-size.patch
+
 BuildRequires: SDL2-devel
 BuildRequires: zlib-devel
 BuildRequires: which
@@ -736,7 +739,11 @@ CAC emulation development files.
 
 
 %prep
-%setup -q -n qemu-%{version}-rc0
+%setup -q -n qemu-%{version}-rc1
+
+# Fix virtconsole migration
+%patch0001 -p1
+
 
 %build
 %if %{with kvmonly}
@@ -1514,6 +1521,9 @@ getent passwd qemu >/dev/null || \
 %endif
 
 %changelog
+* Tue Mar 24 2015 Cole Robinson <crobinso@redhat.com> - 2:2.3.0-0.1.rc1
+- Rebased to version 2.3.0-rc1
+
 * Sun Mar 22 2015 Cole Robinson <crobinso@redhat.com> - 2:2.3.0-0.1.rc0
 - Rebased to version 2.3.0-rc0
 
diff --git a/sources b/sources
index d429804..78759fa 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-6c748ce737a42021f30d6c7a3248c2b5  qemu-2.3.0-rc0.tar.bz2
+3a7542676a8ad4f0190c111e3fbfcaa1  qemu-2.3.0-rc1.tar.bz2