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[Xen-devel] [PATCH RFC 1/3] migration: Fix regretion for xenfv machine.

From: Anthony PERARD <anthony.perard@xxxxxxxxx>

This fix migration from the same QEMU version and from previous QEMU

From the global state section, we don't need runstate with Xen. Right now,
the way the Xen toolstack knows when QEMU is ready is when QEMU reach
"running" runstate.

The configuration sectin and the section footers are not going to be
present in previous version of QEMU with xenfv machine, so we skip them.

Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
Tested migration from QEMU 2.2.1 to master.
 hw/i386/pc_piix.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index a896624..b18758d 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -455,6 +455,9 @@ static void pc_xen_hvm_init(MachineState *machine)
     if (bus != NULL) {
         pci_create_simple(bus, -1, "xen-platform");
+    global_state_set_optional();
+    savevm_skip_configuration();
+    savevm_skip_section_footers();
Anthony PERARD

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