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[Qemu-devel] [RFC] PCI/migration merge vmstate_pci_device and vmstate_pc
From: |
Dr. David Alan Gilbert (git) |
Subject: |
[Qemu-devel] [RFC] PCI/migration merge vmstate_pci_device and vmstate_pcie_device |
Date: |
Wed, 14 Dec 2016 19:58:29 +0000 |
From: "Dr. David Alan Gilbert" <address@hidden>
The vmstate_pci_device and vmstate_pcie_devices differ
just in the size of one buffer; combine the two using a _TEST
macro.
I think this is safe as long as everywhere which currently
uses either of these two uses the right type.
One thing that concerns me is that some places use pci_device_load/save
which does some irq mangling, but others just use the VMSTATE_PCI_DEVICE
macro - how are they getting the same irq mangling?
This passes a smoke test migrate of:
./x86_64-softmmu/qemu-system-x86_64 -M pc,accel=kvm -m 1024
./littlefed20.img -device e1000e -device virtio-net -device
e1000 -device virtio-rng -device megasas -device megasas-gen2 -device
ioh3420 -device nec-usb-xhci
to an unmodified qemu.
Signed-off-by: Dr. David Alan Gilbert <address@hidden>
---
hw/net/e1000e.c | 2 +-
hw/net/vmxnet3.c | 2 +-
hw/pci-bridge/ioh3420.c | 2 +-
hw/pci-bridge/xio3130_downstream.c | 2 +-
hw/pci-bridge/xio3130_upstream.c | 2 +-
hw/pci/pci.c | 41 +++++++++++++++++---------------------
hw/scsi/megasas.c | 2 +-
hw/scsi/vmw_pvscsi.c | 2 +-
hw/usb/hcd-xhci.c | 2 +-
include/hw/pci/pcie.h | 10 ----------
10 files changed, 26 insertions(+), 41 deletions(-)
diff --git a/hw/net/e1000e.c b/hw/net/e1000e.c
index 4994e1c..463ac9b 100644
--- a/hw/net/e1000e.c
+++ b/hw/net/e1000e.c
@@ -592,7 +592,7 @@ static const VMStateDescription e1000e_vmstate = {
.pre_save = e1000e_pre_save,
.post_load = e1000e_post_load,
.fields = (VMStateField[]) {
- VMSTATE_PCIE_DEVICE(parent_obj, E1000EState),
+ VMSTATE_PCI_DEVICE(parent_obj, E1000EState),
VMSTATE_MSIX(parent_obj, E1000EState),
VMSTATE_UINT32(ioaddr, E1000EState),
diff --git a/hw/net/vmxnet3.c b/hw/net/vmxnet3.c
index bbb898b..86cded9 100644
--- a/hw/net/vmxnet3.c
+++ b/hw/net/vmxnet3.c
@@ -2538,7 +2538,7 @@ static const VMStateDescription
vmstate_vmxnet3_pcie_device = {
.minimum_version_id = 1,
.needed = vmxnet3_vmstate_need_pcie_device,
.fields = (VMStateField[]) {
- VMSTATE_PCIE_DEVICE(parent_obj, VMXNET3State),
+ VMSTATE_PCI_DEVICE(parent_obj, VMXNET3State),
VMSTATE_END_OF_LIST()
}
};
diff --git a/hw/pci-bridge/ioh3420.c b/hw/pci-bridge/ioh3420.c
index c8b5ac4..98114e1 100644
--- a/hw/pci-bridge/ioh3420.c
+++ b/hw/pci-bridge/ioh3420.c
@@ -178,7 +178,7 @@ static const VMStateDescription vmstate_ioh3420 = {
.minimum_version_id = 1,
.post_load = pcie_cap_slot_post_load,
.fields = (VMStateField[]) {
- VMSTATE_PCIE_DEVICE(parent_obj.parent_obj.parent_obj, PCIESlot),
+ VMSTATE_PCI_DEVICE(parent_obj.parent_obj.parent_obj, PCIESlot),
VMSTATE_STRUCT(parent_obj.parent_obj.parent_obj.exp.aer_log,
PCIESlot, 0, vmstate_pcie_aer_log, PCIEAERLog),
VMSTATE_END_OF_LIST()
diff --git a/hw/pci-bridge/xio3130_downstream.c
b/hw/pci-bridge/xio3130_downstream.c
index cef6e13..4c54301 100644
--- a/hw/pci-bridge/xio3130_downstream.c
+++ b/hw/pci-bridge/xio3130_downstream.c
@@ -164,7 +164,7 @@ static const VMStateDescription vmstate_xio3130_downstream
= {
.minimum_version_id = 1,
.post_load = pcie_cap_slot_post_load,
.fields = (VMStateField[]) {
- VMSTATE_PCIE_DEVICE(parent_obj.parent_obj.parent_obj, PCIESlot),
+ VMSTATE_PCI_DEVICE(parent_obj.parent_obj.parent_obj, PCIESlot),
VMSTATE_STRUCT(parent_obj.parent_obj.parent_obj.exp.aer_log,
PCIESlot, 0, vmstate_pcie_aer_log, PCIEAERLog),
VMSTATE_END_OF_LIST()
diff --git a/hw/pci-bridge/xio3130_upstream.c b/hw/pci-bridge/xio3130_upstream.c
index 4ad0440..45dbd1c 100644
--- a/hw/pci-bridge/xio3130_upstream.c
+++ b/hw/pci-bridge/xio3130_upstream.c
@@ -136,7 +136,7 @@ static const VMStateDescription vmstate_xio3130_upstream = {
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
- VMSTATE_PCIE_DEVICE(parent_obj.parent_obj, PCIEPort),
+ VMSTATE_PCI_DEVICE(parent_obj.parent_obj, PCIEPort),
VMSTATE_STRUCT(parent_obj.parent_obj.exp.aer_log, PCIEPort, 0,
vmstate_pcie_aer_log, PCIEAERLog),
VMSTATE_END_OF_LIST()
diff --git a/hw/pci/pci.c b/hw/pci/pci.c
index 16df188..8e4226b 100644
--- a/hw/pci/pci.c
+++ b/hw/pci/pci.c
@@ -542,30 +542,29 @@ static VMStateInfo vmstate_info_pci_irq_state = {
.put = put_pci_irq_state,
};
+static bool migrate_is_pcie(void *opaque, int version_id)
+{
+ return pci_is_express((PCIDevice *)opaque);
+}
+
+static bool migrate_is_not_pcie(void *opaque, int version_id)
+{
+ return !pci_is_express((PCIDevice *)opaque);
+}
+
const VMStateDescription vmstate_pci_device = {
.name = "PCIDevice",
.version_id = 2,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_INT32_POSITIVE_LE(version_id, PCIDevice),
- VMSTATE_BUFFER_UNSAFE_INFO(config, PCIDevice, 0,
- vmstate_info_pci_config,
+ VMSTATE_BUFFER_UNSAFE_INFO_TEST(config, PCIDevice,
+ migrate_is_not_pcie,
+ 0, vmstate_info_pci_config,
PCI_CONFIG_SPACE_SIZE),
- VMSTATE_BUFFER_UNSAFE_INFO(irq_state, PCIDevice, 2,
- vmstate_info_pci_irq_state,
- PCI_NUM_PINS * sizeof(int32_t)),
- VMSTATE_END_OF_LIST()
- }
-};
-
-const VMStateDescription vmstate_pcie_device = {
- .name = "PCIEDevice",
- .version_id = 2,
- .minimum_version_id = 1,
- .fields = (VMStateField[]) {
- VMSTATE_INT32_POSITIVE_LE(version_id, PCIDevice),
- VMSTATE_BUFFER_UNSAFE_INFO(config, PCIDevice, 0,
- vmstate_info_pci_config,
+ VMSTATE_BUFFER_UNSAFE_INFO_TEST(config, PCIDevice,
+ migrate_is_pcie,
+ 0, vmstate_info_pci_config,
PCIE_CONFIG_SPACE_SIZE),
VMSTATE_BUFFER_UNSAFE_INFO(irq_state, PCIDevice, 2,
vmstate_info_pci_irq_state,
@@ -574,10 +573,6 @@ const VMStateDescription vmstate_pcie_device = {
}
};
-static inline const VMStateDescription *pci_get_vmstate(PCIDevice *s)
-{
- return pci_is_express(s) ? &vmstate_pcie_device : &vmstate_pci_device;
-}
void pci_device_save(PCIDevice *s, QEMUFile *f)
{
@@ -586,7 +581,7 @@ void pci_device_save(PCIDevice *s, QEMUFile *f)
* This makes us compatible with old devices
* which never set or clear this bit. */
s->config[PCI_STATUS] &= ~PCI_STATUS_INTERRUPT;
- vmstate_save_state(f, pci_get_vmstate(s), s, NULL);
+ vmstate_save_state(f, &vmstate_pci_device, s, NULL);
/* Restore the interrupt status bit. */
pci_update_irq_status(s);
}
@@ -594,7 +589,7 @@ void pci_device_save(PCIDevice *s, QEMUFile *f)
int pci_device_load(PCIDevice *s, QEMUFile *f)
{
int ret;
- ret = vmstate_load_state(f, pci_get_vmstate(s), s, s->version_id);
+ ret = vmstate_load_state(f, &vmstate_pci_device, s, s->version_id);
/* Restore the interrupt status bit. */
pci_update_irq_status(s);
return ret;
diff --git a/hw/scsi/megasas.c b/hw/scsi/megasas.c
index 67fc1e7..adc0c4b 100644
--- a/hw/scsi/megasas.c
+++ b/hw/scsi/megasas.c
@@ -2288,7 +2288,7 @@ static const VMStateDescription vmstate_megasas_gen2 = {
.minimum_version_id = 0,
.minimum_version_id_old = 0,
.fields = (VMStateField[]) {
- VMSTATE_PCIE_DEVICE(parent_obj, MegasasState),
+ VMSTATE_PCI_DEVICE(parent_obj, MegasasState),
VMSTATE_MSIX(parent_obj, MegasasState),
VMSTATE_INT32(fw_state, MegasasState),
diff --git a/hw/scsi/vmw_pvscsi.c b/hw/scsi/vmw_pvscsi.c
index a5ce7de..7557546 100644
--- a/hw/scsi/vmw_pvscsi.c
+++ b/hw/scsi/vmw_pvscsi.c
@@ -1207,7 +1207,7 @@ static const VMStateDescription
vmstate_pvscsi_pcie_device = {
.name = "pvscsi/pcie",
.needed = pvscsi_vmstate_need_pcie_device,
.fields = (VMStateField[]) {
- VMSTATE_PCIE_DEVICE(parent_obj, PVSCSIState),
+ VMSTATE_PCI_DEVICE(parent_obj, PVSCSIState),
VMSTATE_END_OF_LIST()
}
};
diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c
index 4acf0c6..e0b5169 100644
--- a/hw/usb/hcd-xhci.c
+++ b/hw/usb/hcd-xhci.c
@@ -3894,7 +3894,7 @@ static const VMStateDescription vmstate_xhci = {
.version_id = 1,
.post_load = usb_xhci_post_load,
.fields = (VMStateField[]) {
- VMSTATE_PCIE_DEVICE(parent_obj, XHCIState),
+ VMSTATE_PCI_DEVICE(parent_obj, XHCIState),
VMSTATE_MSIX(parent_obj, XHCIState),
VMSTATE_STRUCT_VARRAY_UINT32(ports, XHCIState, numports, 1,
diff --git a/include/hw/pci/pcie.h b/include/hw/pci/pcie.h
index 056d25e..894262e 100644
--- a/include/hw/pci/pcie.h
+++ b/include/hw/pci/pcie.h
@@ -121,16 +121,6 @@ void pcie_add_capability(PCIDevice *dev,
void pcie_ari_init(PCIDevice *dev, uint16_t offset, uint16_t nextfn);
void pcie_dev_ser_num_init(PCIDevice *dev, uint16_t offset, uint64_t ser_num);
-extern const VMStateDescription vmstate_pcie_device;
-
-#define VMSTATE_PCIE_DEVICE(_field, _state) { \
- .name = (stringify(_field)), \
- .size = sizeof(PCIDevice), \
- .vmsd = &vmstate_pcie_device, \
- .flags = VMS_STRUCT, \
- .offset = vmstate_offset_value(_state, _field, PCIDevice), \
-}
-
void pcie_cap_slot_hotplug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
Error **errp);
void pcie_cap_slot_hot_unplug_request_cb(HotplugHandler *hotplug_dev,
--
2.9.3
- [Qemu-devel] [RFC] PCI/migration merge vmstate_pci_device and vmstate_pcie_device,
Dr. David Alan Gilbert (git) <=