[PULL 18/39] hw/ipmi: Don't call vmstate_register() from instance_init() functions

From: Thomas Huth <thuth(a)redhat.com&gt; instance_init() can be called multiple times, e.g. during introspection of the device. We should not install the vmstate handlers here. Do it in the realize() function instead. Signed-off-by: Thomas Huth <thuth(a)redhat.com&gt; Reviewed-by: Juan Quintela <quintela(a)redhat.com&gt; Acked-by: Corey Minyard <cminyard(a)mvista.com&gt; Signed-off-by: Juan Quintela <quintela(a)redhat.com&gt; Message-ID: <20231020145554.662751-1-thuth(a)redhat.com&gt; --- hw/ipmi/ipmi_bmc_extern.c | 29 ++++++++++++----------- hw/ipmi/isa_ipmi_bt.c | 34 +++++++++++++------------- hw/ipmi/isa_ipmi_kcs.c | 50 +++++++++++++++++++-------------------- 3 files changed, 57 insertions(+), 56 deletions(-) diff --git a/hw/ipmi/ipmi_bmc_extern.c b/hw/ipmi/ipmi_bmc_extern.c index e232d35ba2..2117dad35a 100644 --- a/hw/ipmi/ipmi_bmc_extern.c +++ b/hw/ipmi/ipmi_bmc_extern.c @@ -453,19 +453,6 @@ static void ipmi_bmc_extern_handle_reset(IPMIBmc *b) continue_send(ibe); } -static void ipmi_bmc_extern_realize(DeviceState *dev, Error **errp) -{ - IPMIBmcExtern *ibe = IPMI_BMC_EXTERN(dev); - - if (!qemu_chr_fe_backend_connected(&ibe->chr)) { - error_setg(errp, "IPMI external bmc requires chardev attribute"); - return; - } - - qemu_chr_fe_set_handlers(&ibe->chr, can_receive, receive, - chr_event, NULL, ibe, NULL, true); -} - static int ipmi_bmc_extern_post_migrate(void *opaque, int version_id) { IPMIBmcExtern *ibe = opaque; @@ -499,12 +486,26 @@ static const VMStateDescription vmstate_ipmi_bmc_extern = { } }; +static void ipmi_bmc_extern_realize(DeviceState *dev, Error **errp) +{ + IPMIBmcExtern *ibe = IPMI_BMC_EXTERN(dev); + + if (!qemu_chr_fe_backend_connected(&ibe->chr)) { + error_setg(errp, "IPMI external bmc requires chardev attribute"); + return; + } + + qemu_chr_fe_set_handlers(&ibe->chr, can_receive, receive, + chr_event, NULL, ibe, NULL, true); + + vmstate_register(NULL, 0, &vmstate_ipmi_bmc_extern, ibe); +} + static void ipmi_bmc_extern_init(Object *obj) { IPMIBmcExtern *ibe = IPMI_BMC_EXTERN(obj); ibe->extern_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, extern_timeout, ibe); - vmstate_register(NULL, 0, &vmstate_ipmi_bmc_extern, ibe); } static void ipmi_bmc_extern_finalize(Object *obj) diff --git a/hw/ipmi/isa_ipmi_bt.c b/hw/ipmi/isa_ipmi_bt.c index a83e7243d6..aec064d3cd 100644 --- a/hw/ipmi/isa_ipmi_bt.c +++ b/hw/ipmi/isa_ipmi_bt.c @@ -68,6 +68,21 @@ static void isa_ipmi_bt_lower_irq(IPMIBT *ib) qemu_irq_lower(iib->irq); } +static const VMStateDescription vmstate_ISAIPMIBTDevice = { + .name = TYPE_IPMI_INTERFACE_PREFIX "isa-bt", + .version_id = 2, + .minimum_version_id = 2, + /* + * Version 1 had messed up the array transfer, it's not even usable + * because it used VMSTATE_VBUFFER_UINT32, but it did not transfer + * the buffer length, so random things would happen. + */ + .fields = (VMStateField[]) { + VMSTATE_STRUCT(bt, ISAIPMIBTDevice, 1, vmstate_IPMIBT, IPMIBT), + VMSTATE_END_OF_LIST() + } +}; + static void isa_ipmi_bt_realize(DeviceState *dev, Error **errp) { Error *err = NULL; @@ -102,30 +117,15 @@ static void isa_ipmi_bt_realize(DeviceState *dev, Error **errp) qdev_set_legacy_instance_id(dev, iib->bt.io_base, iib->bt.io_length); isa_register_ioport(isadev, &iib->bt.io, iib->bt.io_base); -} -static const VMStateDescription vmstate_ISAIPMIBTDevice = { - .name = TYPE_IPMI_INTERFACE_PREFIX "isa-bt", - .version_id = 2, - .minimum_version_id = 2, - /* - * Version 1 had messed up the array transfer, it's not even usable - * because it used VMSTATE_VBUFFER_UINT32, but it did not transfer - * the buffer length, so random things would happen. - */ - .fields = (VMStateField[]) { - VMSTATE_STRUCT(bt, ISAIPMIBTDevice, 1, vmstate_IPMIBT, IPMIBT), - VMSTATE_END_OF_LIST() - } -}; + vmstate_register(NULL, 0, &vmstate_ISAIPMIBTDevice, dev); +} static void isa_ipmi_bt_init(Object *obj) { ISAIPMIBTDevice *iib = ISA_IPMI_BT(obj); ipmi_bmc_find_and_link(obj, (Object **) &iib->bt.bmc); - - vmstate_register(NULL, 0, &vmstate_ISAIPMIBTDevice, iib); } static void *isa_ipmi_bt_get_backend_data(IPMIInterface *ii) diff --git a/hw/ipmi/isa_ipmi_kcs.c b/hw/ipmi/isa_ipmi_kcs.c index b2ed70b9da..b5dcb64616 100644 --- a/hw/ipmi/isa_ipmi_kcs.c +++ b/hw/ipmi/isa_ipmi_kcs.c @@ -67,6 +67,24 @@ static void isa_ipmi_kcs_lower_irq(IPMIKCS *ik) qemu_irq_lower(iik->irq); } +static bool vmstate_kcs_before_version2(void *opaque, int version) +{ + return version <= 1; +} + +static const VMStateDescription vmstate_ISAIPMIKCSDevice = { + .name = TYPE_IPMI_INTERFACE, + .version_id = 2, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_VSTRUCT_TEST(kcs, ISAIPMIKCSDevice, vmstate_kcs_before_version2, + 0, vmstate_IPMIKCS, IPMIKCS, 1), + VMSTATE_VSTRUCT_V(kcs, ISAIPMIKCSDevice, 2, vmstate_IPMIKCS, + IPMIKCS, 2), + VMSTATE_END_OF_LIST() + } +}; + static void ipmi_isa_realize(DeviceState *dev, Error **errp) { Error *err = NULL; @@ -101,31 +119,6 @@ static void ipmi_isa_realize(DeviceState *dev, Error **errp) qdev_set_legacy_instance_id(dev, iik->kcs.io_base, iik->kcs.io_length); isa_register_ioport(isadev, &iik->kcs.io, iik->kcs.io_base); -} - -static bool vmstate_kcs_before_version2(void *opaque, int version) -{ - return version <= 1; -} - -static const VMStateDescription vmstate_ISAIPMIKCSDevice = { - .name = TYPE_IPMI_INTERFACE, - .version_id = 2, - .minimum_version_id = 1, - .fields = (VMStateField[]) { - VMSTATE_VSTRUCT_TEST(kcs, ISAIPMIKCSDevice, vmstate_kcs_before_version2, - 0, vmstate_IPMIKCS, IPMIKCS, 1), - VMSTATE_VSTRUCT_V(kcs, ISAIPMIKCSDevice, 2, vmstate_IPMIKCS, - IPMIKCS, 2), - VMSTATE_END_OF_LIST() - } -}; - -static void isa_ipmi_kcs_init(Object *obj) -{ - ISAIPMIKCSDevice *iik = ISA_IPMI_KCS(obj); - - ipmi_bmc_find_and_link(obj, (Object **) &iik->kcs.bmc); /* * Version 1 had an incorrect name, it clashed with the BT @@ -135,6 +128,13 @@ static void isa_ipmi_kcs_init(Object *obj) vmstate_register(NULL, 0, &vmstate_ISAIPMIKCSDevice, iik); } +static void isa_ipmi_kcs_init(Object *obj) +{ + ISAIPMIKCSDevice *iik = ISA_IPMI_KCS(obj); + + ipmi_bmc_find_and_link(obj, (Object **) &iik->kcs.bmc); +} + static void *isa_ipmi_kcs_get_backend_data(IPMIInterface *ii) { ISAIPMIKCSDevice *iik = ISA_IPMI_KCS(ii); -- 2.41.0