The type does:
1197 compat_props_add(m->compat_props, hw_compat_2_3, hw_compat_2_3_len);
Defined as:
198 GlobalProperty hw_compat_2_3[] = {
199 { "virtio-blk-pci", "any_layout", "off" },
200 { "virtio-balloon-pci", "any_layout", "off" },
201 { "virtio-serial-pci", "any_layout", "off" },
202 { "virtio-9p-pci", "any_layout", "off" },
203 { "virtio-rng-pci", "any_layout", "off" },
204 { TYPE_PCI_DEVICE, "x-pcie-lnksta-dllla", "off" },
205 { "migration", "send-configuration", "off" },
206 { "migration", "send-section-footer", "off" },
207 { "migration", "store-global-state", "off" },
208 };
209 const size_t hw_compat_2_3_len = G_N_ELEMENTS(hw_compat_2_3);
311 static inline void
312 compat_props_add(GPtrArray *arr,
313 GlobalProperty props[], size_t nelem)
314 {
315 int i;
316 for (i = 0; i < nelem; i++) {
317 g_ptr_array_add(arr, (void *)&props[i]);
318 }
319 }
So in debug on the init of the wily type we should see
{ "virtio-balloon-pci", "any_layout", "off" }
be added.
$ apt install qemu-system-x86-dbgsym
$ apt source qemu
$ cd qemu-4.2
$ gdb /usr/bin/qemu-system-x86_64
(gdb) b compat_props_add
Breakpoint 1 at 0x4aadd1: compat_props_add. (83 locations)
(gdb) b pc_i440fx_wily_machine_options
Breakpoint 2 at 0x4acdcb: file ./hw/i386/pc_piix.c, line 1198.
(gdb) run -m 128 -M pc-i440fx-wily,accel=kvm --nodefaults --nographic --monitor
stdio -device virtio-balloon-pci,id=balloon0
Unfortunately on a normal build these functions like
pc_i440fx_wily_machine_options and compat_props_add are very much inlined and
arguments optimized out - so we might need a debug build to be able to track
where this is lost more easily.
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1902654
Title:
failure to migrate virtual machines with pc-i440fx-wily type to ubuntu
20.04
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1902654/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
