diff options
| author | Cole Robinson <crobinso@redhat.com> | 2013-11-05 18:46:27 -0500 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2013-11-10 12:08:37 +0200 |
| commit | 04c7d8b8dea724f1007f0f6e76047ff03b4cb24f (patch) | |
| tree | 019e2c6abc0002a80903abd8fc4bc062aa156c33 /hw/pci-host | |
| parent | c2d30667760e3d7b81290d801e567d4f758825ca (diff) | |
Fix pc migration from qemu <= 1.5
The following commit introduced a migration incompatibility:
commit 568f0690fd9aa4d39d84b04c1a5dbb53a915c3fe
Author: David Gibson <david@gibson.dropbear.id.au>
Date: Thu Jun 6 18:48:49 2013 +1000
pci: Replace pci_find_domain() with more general pci_root_bus_path()
The issue is that i440fx savevm idstr went from 0000:00:00.0/I440FX to
0000:00.0/I440FX. Unfortunately we are stuck with the breakage for
1.6 machine types.
Add a compat property to maintain the busted idstr for the 1.6 machine
types, but revert to the old style format for 1.7+, and <= 1.5.
Tested with migration from qemu 1.5, qemu 1.6, and qemu.git.
Cc: qemu-stable@nongnu.org
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/pci-host')
| -rw-r--r-- | hw/pci-host/piix.c | 9 | ||||
| -rw-r--r-- | hw/pci-host/q35.c | 10 |
2 files changed, 16 insertions, 3 deletions
diff --git a/hw/pci-host/piix.c b/hw/pci-host/piix.c index bad3953fb5..edc974ece3 100644 --- a/hw/pci-host/piix.c +++ b/hw/pci-host/piix.c @@ -48,6 +48,7 @@ typedef struct I440FXState { PCIHostState parent_obj; PcPciInfo pci_info; uint64_t pci_hole64_size; + uint32_t short_root_bus; } I440FXState; #define PIIX_NUM_PIC_IRQS 16 /* i8259 * 2 */ @@ -720,13 +721,19 @@ static const TypeInfo i440fx_info = { static const char *i440fx_pcihost_root_bus_path(PCIHostState *host_bridge, PCIBus *rootbus) { + I440FXState *s = I440FX_PCI_HOST_BRIDGE(host_bridge); + /* For backwards compat with old device paths */ - return "0000"; + if (s->short_root_bus) { + return "0000"; + } + return "0000:00"; } static Property i440fx_props[] = { DEFINE_PROP_SIZE(PCI_HOST_PROP_PCI_HOLE64_SIZE, I440FXState, pci_hole64_size, DEFAULT_PCI_HOLE64_SIZE), + DEFINE_PROP_UINT32("short_root_bus", I440FXState, short_root_bus, 0), DEFINE_PROP_END_OF_LIST(), }; diff --git a/hw/pci-host/q35.c b/hw/pci-host/q35.c index b8feed1254..c043998e32 100644 --- a/hw/pci-host/q35.c +++ b/hw/pci-host/q35.c @@ -61,8 +61,13 @@ static void q35_host_realize(DeviceState *dev, Error **errp) static const char *q35_host_root_bus_path(PCIHostState *host_bridge, PCIBus *rootbus) { - /* For backwards compat with old device paths */ - return "0000"; + Q35PCIHost *s = Q35_HOST_DEVICE(host_bridge); + + /* For backwards compat with old device paths */ + if (s->mch.short_root_bus) { + return "0000"; + } + return "0000:00"; } static void q35_host_get_pci_hole_start(Object *obj, Visitor *v, @@ -124,6 +129,7 @@ static Property mch_props[] = { MCH_HOST_BRIDGE_PCIEXBAR_DEFAULT), DEFINE_PROP_SIZE(PCI_HOST_PROP_PCI_HOLE64_SIZE, Q35PCIHost, mch.pci_hole64_size, DEFAULT_PCI_HOLE64_SIZE), + DEFINE_PROP_UINT32("short_root_bus", Q35PCIHost, mch.short_root_bus, 0), DEFINE_PROP_END_OF_LIST(), }; |