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2013-07-04qom: Use atomics for object refcountingJan Kiszka1-3/+2
Object reference counts will soon be changed outside the BQL. So we need to use atomics in object_ref/unref. Based on a patch by Liu Ping Fan. Signed-off-by: Liu Ping Fan <qemulist@gmail.com> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-06-28cpu: Change qemu_init_vcpu() argument to CPUStateAndreas Färber1-0/+2
This allows to move the call into CPUState's realizefn. Therefore move the stub into libqemustub.a. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-06-28cpu: Turn cpu_dump_{state,statistics}() into CPUState hooksAndreas Färber1-1/+21
Make cpustats monitor command available unconditionally. Prepares for changing kvm_handle_internal_error() and kvm_cpu_exec() arguments to CPUState. Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-06-28cpu: Change cpu_exit() argument to CPUStateAndreas Färber1-0/+6
It no longer depends on CPUArchState, so move it to qom/cpu.c. Prepares for changing GDBState::c_cpu to CPUState. Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-06-11cpu: Change default for CPUClass::get_paging_enabled()Andreas Färber1-1/+1
qemu_get_guest_memory_mapping() uses cpu_paging_enabled() to determine whether to use cpu_get_memory_mapping() to return mappings or whether to fall back to a simple identity map. Since by default CPUClass::get_memory_mapping() is not implemented, change the default to false to use the identity map by default. Reviewed-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-06-11cpu: Turn cpu_get_memory_mapping() into a CPUState hookAndreas Färber1-0/+16
Change error reporting from return value to Error argument. Reviewed-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> [AF: Fixed cpu_get_memory_mapping() documentation] Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-06-11cpu: Turn cpu_paging_enabled() into a CPUState hookAndreas Färber1-0/+13
Relocate assignment of x86 get_arch_id to have all hooks in one place. Reviewed-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-05-22qom/object: Don't poll cast cache for NULL objectsPeter Crosthwaite1-2/+2
object_dynamic_cast_assert used to be tolerant of NULL objects and not assert. It's clear from the implementation that this is the expected behavior. The preceding check of the cast cache dereferences obj however causing a segfault. Fix by conditionalizing the cast cache logic on obj being non-null. Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Reviewed-by: Andreas Färber <afaerber@suse.de> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Edgar E. Iglesias <edgar.iglesias@gmail.com> Message-id: 8e2bef6a55753869c50bfa32226f7fcf0439ca62.1369183592.git.peter.crosthwaite@xilinx.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-05-13qom: aggressively optimize qom castingAnthony Liguori1-2/+38
This patch adds a small typename cache to ObjectClass. This allows caching positive casts within each ObjectClass. Benchmarking a PPC workload provided by Aurelien, this patch eliminates every single g_hash_table_lookup() happening during the benchmark (which was about 2 million per-second). With this patch applied, I get exactly the same performance (within the margin of error) as with --disable-qom-cast-debug. N.B. it's safe to cache typenames only from the _assert() macros because they are always called with string literals. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-05-13qom: allow turning cast debugging offPaolo Bonzini1-4/+11
Cast debugging can have a substantial cost (20% or more). Instead of adding special-cased "fast casts" in the hot paths, we can just disable it in releases. The tracing facilities we just added make it easier to analyze those problems that cast debugging would reveal. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1368188203-3407-7-git-send-email-pbonzini@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-05-13qom: trace asserting castsPaolo Bonzini1-1/+9
This provides a way to detect the cast that leads to a (reproducible) crash even when QOM cast debugging is disabled. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1368188203-3407-6-git-send-email-pbonzini@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-05-13qom: pass file/line/function to asserting castsPaolo Bonzini1-6/+9
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1368188203-3407-5-git-send-email-pbonzini@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-05-13qom: add a fast path to object_class_dynamic_castPaolo Bonzini1-0/+5
For leaf classes, in many cases the callbacks will simply downcast the object back to the original class. Add this fast path to object_class_dynamic_cast, object_dynamic_cast will inherit it. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1368188203-3407-4-git-send-email-pbonzini@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-05-13qom: allow casting of a NULL classPaolo Bonzini1-3/+9
This mimics what we do in object_dynamic_cast_assert. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1368188203-3407-3-git-send-email-pbonzini@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-05-01cpu: Move cpu_write_elfXX_note() functions to CPUStateJens Freimann1-0/+63
Convert cpu_write_elfXX_note() functions to CPUClass methods and pass CPUState as argument. Update target-i386 accordingly. Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> [AF: Retain stubs as CPUClass' default method implementation; style changes] Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-05-01cpu: Add helper cpu_exists(), to check if CPU with specified id existsIgor Mammedov1-0/+26
Signed-off-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-05-01cpu: Introduce get_arch_id() method and override it for X86CPUIgor Mammedov1-0/+6
get_arch_id() adds possibility for generic code to get a guest-visible CPU ID without accessing CPUArchState. If derived classes don't override it, it will return cpu_index. Override it on target-i386 in X86CPU to return the APIC ID. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: liguang <lig.fnst@cn.fujitsu.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-05-01cpu: Introduce CPU hot-plug notifierIgor Mammedov1-0/+12
Hot-add CPU event will be distributed to acpi_piix4 and rtc_cmos. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-05-01cpu: Resume CPU from DeviceClass::realize() if hot-pluggedIgor Mammedov1-0/+1
Signed-off-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-05-01cpu: Call cpu_synchronize_post_init() from DeviceClass::realize()Igor Mammedov1-0/+6
If hotplugged, synchronize CPU state to KVM. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-04-30QOM: Fail casts for unknown typesAlexander Graf1-0/+5
When we try to cast an object to an unknown type, fail the cast. Today we would simply run into an assert(). This fixes a bug on qemu-system-s390x for me that gets triggered by the audio code looking for PCI and ISA buses. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1367326936-28539-1-git-send-email-agraf@suse.de Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-04-29qom: do not return root for empty pathPaolo Bonzini1-10/+2
An empty path will return the sole object of that type in the QOM tree. This is different from "/", which returns the root. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1366303444-24620-7-git-send-email-pbonzini@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-04-16qom: do nothing on unparent of object without parentPaolo Bonzini1-0/+4
Otherwise, device_unparent will fail to get a canonical path of the object. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1364910600-3418-1-git-send-email-pbonzini@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-03-26Merge remote-tracking branch 'mst/tags/for_anthony' into stagingAnthony Liguori1-3/+3
virtio,pci,qom Work by Alex to support VGA assignment, pci and virtio fixes by Stefan, Jason and myself, and a new qmp event for hotplug support by myself. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> # gpg: Signature made Tue 26 Mar 2013 02:02:24 PM CDT using RSA key ID D28D5469 # gpg: Can't check signature: public key not found # By Alex Williamson (13) and others # Via Michael S. Tsirkin * mst/tags/for_anthony: (23 commits) pcie: Add endpoint capability initialization wrapper roms: switch oldnoconfig to olddefconfig pcie: Mangle types to match topology pci: Create and use API to determine root buses pci: Create pci_bus_is_express helper pci: Q35, Root Ports, and Switches create PCI Express buses pci: Allow PCI bus creation interfaces to specify the type of bus pci: Move PCI and PCIE type defines pci: Create and register a new PCI Express TypeInfo exec: assert that RAMBlock size is non-zero pci: refuse empty ROM files pci_bridge: Remove duplicate IRQ swizzle function pci_bridge: Use a default map_irq function pci: Fix INTx routing notifier recursion pci_bridge: drop formatting from source pci_bridge: factor out common code pci: Teach PCI Bridges about VGA routing pci: Add PCI VGA helpers virtio-pci: guest notifier mask without non-irqfd virtio-net: remove layout assumptions for mq ctrl ...
2013-03-26qom: call class destructor before unparentMichael S. Tsirkin1-3/+3
It seems more logical to have destruction flow start with the subclass and move up to the base class. This ensures object has a valid canonical path when destructor is called. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2013-03-26qom: Detect attempts to add a property that already existsPeter Maydell1-1/+12
Detect attempts to add a property to an object if one of that name already exists, and report them as errors. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1364217314-7400-2-git-send-email-peter.maydell@linaro.org Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-03-12exec: Pass CPUState to cpu_reset_interrupt()Andreas Färber1-0/+5
Move it to qom/cpu.c to avoid build failures depending on include order of cpu-qom.h and exec/cpu-all.h. Change opaques of various ..._irq_handler() functions to the appropriate CPU type to facilitate using cpu_reset_interrupt(). Fix Coding Style issues while at it (missing braces, indentation). Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-03-12cpu: Move halted and interrupt_request fields to CPUStateAndreas Färber1-0/+2
Both fields are used in VMState, thus need to be moved together. Explicitly zero them on reset since they were located before breakpoints. Pass PowerPCCPU to kvmppc_handle_halt(). Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-02-21qom/object.c: Allow itf cast with num_itfs = 0Peter Crosthwaite1-1/+2
num_interfaces only tells you how many interfaces the concrete child class has (as defined in the TypeInfo). This means if you have a child class which defines no interfaces of its own, but its parent has interfaces you cannot cast to those parent interfaces. Fixed changing the guard to check the class->interfaces list instead (which is a complete flattened list of implemented interfaces). Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Message-id: a8c2db3b9b1f3c4bb81aca352b69e33260f36545.1361246206.git.peter.crosthwaite@xilinx.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-02-21qom/object.c: Reset interface list on inheritancePeter Crosthwaite1-0/+1
The QOM framework will attempt the recreate a classes interface list from scratch for each class. This means that a child class should zero out the list of interfaces when cloned from the parent class. Currently the list is memcpy()d from the parent to the child. As the interface list is just a pointer to a list, this means the parent and child will share the same list of interfaces. When the child inits, it will append its own interfaces to the parents list. This is incorrect as the parent should not pick up its childs interfaces. This actually causes an infinite loop at class init time, as the child will iterate through the parent interface list adding each itf to its own list(in type_initialize()). As the list is (erroneously) shared, the new interface instances for the child are appended to the parent, and the iterator never hits the tail and loops forever. Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1f58d2b629d82865dbb2fd5ba8445854049c4382.1361246206.git.peter.crosthwaite@xilinx.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-02-16cpu: Move current_tb field to CPUStateAndreas Färber1-0/+1
Explictly NULL it on CPU reset since it was located before breakpoints. Change vapic_report_tpr_access() argument to CPUState. This also resolves the use of void* for cpu.h independence. Change vAPIC patch_instruction() argument to X86CPU. Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-02-16cpu: Move exit_request field to CPUStateAndreas Färber1-0/+1
Since it was located before breakpoints field, it needs to be reset. Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-02-16cpu: Prepare QOM realizefnAndreas Färber1-0/+5
Overwrite the default implementation with a no-op, no longer attempting to call DeviceClass::init. Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-02-01qom: remove object_deletePaolo Bonzini1-7/+0
This is now unused. Document the initial reference count of an object and when it will be freed/finalized. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-02-01qom: preserve object while unparenting itPaolo Bonzini1-0/+2
Avoid that the object disappears after it's deleted from the QOM composition tree, in case that was the only reference to it. Acked-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-01-27qom: Introduce object_class_is_abstract()Andreas Färber1-0/+5
This lets a caller check if an ObjectClass as returned by, e.g., object_class_by_name() is instantiatable. Signed-off-by: Andreas Färber <afaerber@suse.de> Cc: Anthony Liguori <anthony@codemonkey.ws>
2013-01-27cpu: Add model resolution support to CPUClassAndreas Färber1-0/+13
Introduce CPUClass::class_by_name and add a default implementation. Hook up the alpha and ppc implementations. Introduce a wrapper function cpu_class_by_name(). Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-01-26build: remove universal-obj-yPaolo Bonzini1-2/+2
All of universal-obj-y, user-obj-y (right now unused) and common-obj-y can be unified into common-obj-y if we take care of defining CONFIG_SOFTMMU and CONFIG_USER_ONLY in the toplevel makefile. This is similar to how we define symbols for hardware components. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2013-01-15qom: Make object_resolve_path_component() path argument constAndreas Färber1-1/+1
A usage with a hardcoded partial path such as object_resolve_path_component(obj, "foo") is totally valid but currently leads to a compilation error. Fix this. Signed-off-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-01-12build: consolidate multiple variables into universal-obj-yPaolo Bonzini1-4/+2
The directory descent mechanism, and a less-flat tree both helped in making some *-obj-y definitions very short. Many of these often end up in universal-obj-y, and used to be separate only because of libuser (which is now part of history...). Consolidate these variables in a single one. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-01-10Make all static TypeInfos constAndreas Färber1-1/+1
Since 39bffca2030950ef6efe57c2fac8327a45ae1015 (qdev: register all types natively through QEMU Object Model), TypeInfo as used in the common, non-iterative pattern is no longer amended with information and should therefore be const. Fix the documented QOM examples: sed -i 's/static TypeInfo/static const TypeInfo/g' include/qom/object.h Since frequently the wrong examples are being copied by contributors of new devices, fix all types in the tree: sed -i 's/^static TypeInfo/static const TypeInfo/g' */*.c sed -i 's/^static TypeInfo/static const TypeInfo/g' */*/*.c This also avoids to piggy-back these changes onto real functional changes or other refactorings. Signed-off-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-01-08cpu: Change parent type to DeviceEduardo Habkost1-2/+4
This finally makes the CPU class a subclass of the Device class, allowing us to start using DeviceState properties on CPU subclasses. It has no_user=1, as creating CPUs using -device doesn't work yet. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2012-12-19misc: move include files to include/qemu/Paolo Bonzini1-1/+1
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-19qom: move include files to include/qom/Paolo Bonzini4-6/+6
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-19qapi: move include files to include/qobject/Paolo Bonzini2-7/+7
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-19qapi: remove qapi/qapi-types-core.hPaolo Bonzini1-0/+1
The file is only including error.h and qerror.h. Prefer explicit inclusion of whatever files are needed. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-11-26qom: make object_finalize staticPaolo Bonzini1-1/+1
It is not used anymore, and there is no need to make it public. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-11-26qom: make object_delete usable for statically-allocated objectsPaolo Bonzini1-1/+4
Store in the object the freeing function that will be used at deletion time. This makes it possible to use object_delete on statically-allocated (embedded) objects. Dually, it makes it possible to use object_unparent and object_unref without leaking memory, when the lifetime of object might extend until after the call to object_delete. Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-11-26qdev: move bus removal to object_unparentPaolo Bonzini1-0/+3
Add an ObjectClass method that is done at object_unparent time. It should remove any backlinks to the object in the composition tree, so that object_delete will be able to drop the last reference and free the object. Use it for qdev buses. Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-11-26qom: fix refcount of non-heap-allocated objectsPaolo Bonzini1-1/+1
The reference count for embedded objects is always one too low, because object_initialize_with_type returns with zero references to the object. This causes premature finalization of the object (or an assertion failure) after calling object_ref to add an extra reference and object_unref to remove it. The fix is to move the initial object_ref call from object_new_with_type to object_initialize_with_type. Acked-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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