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[libvirt] [PATCH v3 0/3] network: Add support for local PTR domains
by Jiri Denemark 19 Dec '16

19 Dec '16

I run a system dnsmasq to be able to forward specific DNS requests to specific servers. And I have it configured for both forward and reverse lookups. Another dnsmasq is started for a virtual network with domain "virt". The system dnsmasq knows it needs to forward any requests for the "virt" domain and corresponding PTR domain to the dnsmasq started by libvirt. The problem is dnsmasq forwards queries for unknown names to the upstream name server (which is the system instance in my case). One can get nice endless loops of DNS requests pretty easily. Forward loops can be avoided by specifying localOnly='yes', but there was no way to avoid reverse lookup loops. And this is what I'm trying to address in the following patches. Version 3: - <ptr> support dropped from this series, it will be implemented separately Patches 1 and 2 from version 2 were already pushed. Version 2: - RNG schema changes and tests Jiri Denemark (3): conf: Make virNetworkIPDefParseXML a little bit saner util: Introduce virSocketAddrPTRDomain network: Add support for local PTR domains docs/formatnetwork.html.in | 21 ++++-- docs/news.html.in | 2 + docs/schemas/network.rng | 3 + src/conf/network_conf.c | 55 +++++++++------- src/conf/network_conf.h | 2 + src/libvirt_private.syms | 1 + src/network/bridge_driver.c | 41 ++++++++++++ src/util/virsocketaddr.c | 85 +++++++++++++++++++++++++ src/util/virsocketaddr.h | 9 +++ tests/networkxml2confdata/ptr-domains-auto.conf | 20 ++++++ tests/networkxml2confdata/ptr-domains-auto.xml | 21 ++++++ tests/networkxml2conftest.c | 1 + 12 files changed, 232 insertions(+), 29 deletions(-) create mode 100644 tests/networkxml2confdata/ptr-domains-auto.conf create mode 100644 tests/networkxml2confdata/ptr-domains-auto.xml -- 2.11.0

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[libvirt] [PATCH] perf: Consider all perf events mentioned in commandline
by Nitesh Konkar 19 Dec '16

19 Dec '16

Currently 'virsh perf domainName --enable a,b' command fails to enable/disable perf event b if perf event a has failed to get enabled/disabled. This patch fixes this issue. Signed-off-by: Nitesh Konkar <nitkon12(a)linux.vnet.ibm.com> --- src/qemu/qemu_driver.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index 0bf1856..365af37 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -9884,9 +9884,9 @@ qemuDomainSetPerfEvents(virDomainPtr dom, type = virPerfEventTypeFromString(param->field); if (!enabled && virPerfEventDisable(priv->perf, type) < 0) - goto endjob; + continue; if (enabled && virPerfEventEnable(priv->perf, type, vm->pid) < 0) - goto endjob; + continue; def->perf.events[type] = enabled ? VIR_TRISTATE_BOOL_YES : VIR_TRISTATE_BOOL_NO; -- 1.9.3

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[libvirt] About libvirt on Windows-64bit
by 孙长鹏(外网) 18 Dec '16

18 Dec '16

Hi， I wanted to use libvirt to connect to KVM in Windows-64bit，but I was failed。In fact，when I tryed that in Windows-32bit，it can be right。 Please teach me，how can I make it right in Windows-64bit？After all, the Windows-32bit is outdated。 Thank you very much。forgive my pool English。 Looking forward to your reply！ a new Java developer

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[libvirt] [RFC v3] qmp: query-device-slots command
by Eduardo Habkost 17 Dec '16

17 Dec '16

Changes v2 -> v3: * Implemented a "slot set" structure, where multiple slots can be reported by using integer ranges or lists for possible values for each property. Added a ValueSet struct, that can represent a set of values using either a simple list of values, or integer ranges. (Its JSON representation is very verbose, though. See comments below). * Removed the *Properties structs, and replaced them with a simple list of SlotOption structs. * DeviceSlotInfo is not an union anymore, removed the 'type' field only because there are no slot-type-specific fields in the current implementation, but we may add it back if necessary * The implementation is very quick and dirty, the main purpose of this RFC is to evaluate the schema and returned data. Changes v1 -> v2: * Don't show sysbus unless has_dynamic_sysbus is set for the machine type * Removed max-devices and devices properties * Introduced "non-slot" slot type, to explicitly indicate we are returning info on a bus that doesn't implement slot enumeration yet. * Return bus name instead of full QOM path on "bus" field * PCI: Replaced "addr" property (string parsed by property setter) with "device-number" uint32 property * PCI: return only one slot for PCIe ports This adds a new command to QMP: query-device-slots. It will allow management software to query possible slots where devices can be plugged. This implementation of the command will return: * Multiple PCI slots per bus, in the case of PCI buses; * One slot per bus for the other buses (that don't implement slot enumeration yet); * One slot for each entry from query-hotpluggable-cpus. Representation of slot sets in JSON ----------------------------------- Slot sets are represented by a list of option names and sets of possible values for each of those options. See the SlotOption struct below for details. The representation of those sets is very verbose in this version (see below). e.g. the following set of 5 PCI functions: bus: pcie.0 device-number: 31 function: 1,4-7 Is represented in the JSON data as: "props": [ { "values": { "data": { "ranges": [ { "max": 1, "min": 1 }, { "max": 7, "min": 4 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 31, "min": 31 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "pcie.0" ], "type": "list" }, "option": "bus" } ] We could have used something more compact like: function: 1,4-7 device-number: 31 bus: pcie.0 "props": { "function": [ 1, { 'min': 4, 'max': 7 } ], "device-number": 31, "bus": "pcie.0" } But this would probably cost us the ability of describing and validating the exact representation using the QAPI schema. I don't know which way we should go. QAPI schema ----------- The following structures were added to the QAPI schema: { 'struct': 'IntegerSet', 'data': { 'ranges': [ 'IntegerRange' ] } } { 'struct': 'IntegerRange', 'data': { 'min': 'int', 'max': 'int' } } { 'union': 'ValueSet', 'data': { 'list': [ 'any' ], 'int-set': 'IntegerSet' } } { 'struct': 'SlotOption', 'data': { 'option': 'str', 'values': 'ValueSet' } } { 'struct': 'DeviceSlotInfo', 'data': { 'accepted-device-types': [ 'str' ], 'available': 'bool', 'hotpluggable': 'bool', '*count': 'int', 'incomplete': 'bool', 'props': [ 'SlotOption' ] } } { 'command': 'query-device-slots', 'returns': [ 'DeviceSlotInfo' ] } Git tree -------- This patch needs the previous query-machines series I am working on. The full tree can be found on the git tree at: git://github.com/ehabkost/qemu-hacks.git work/query-machines-bus-info Example output -------------- The following output was returned by QEMU when running it as: $ qemu-system-x86_64 -machine q35 \ -readconfig docs/q35-chipset.cfg \ -smp 4,maxcpus=8,sockets=2,cores=2,threads=2 As the JSON output is now quite verbose, I am including the output of a script that translates the JSON data to a more human-friendly format: Slot set for: i2c-slave Incomplete set available: no hotpluggable: no valid device_add arguments: bus: i2c Slot set for: ide-device Incomplete set available: no hotpluggable: no valid device_add arguments: bus: ide.4 Slot set for: ide-device Incomplete set available: no hotpluggable: no valid device_add arguments: bus: ide.5 Slot set for: ide-device Incomplete set available: no hotpluggable: no valid device_add arguments: bus: ide.0 Slot set for: ide-device Incomplete set available: no hotpluggable: no valid device_add arguments: bus: ide.1 Slot set for: ide-device Incomplete set available: no hotpluggable: no valid device_add arguments: bus: ide.2 Slot set for: ide-device Incomplete set available: no hotpluggable: no valid device_add arguments: bus: ide.3 Slot set for: sys-bus-device Incomplete set available: no hotpluggable: no valid device_add arguments: bus: main-system-bus Slot set for: isa-device Incomplete set available: no hotpluggable: no valid device_add arguments: bus: isa.0 Slot set for: legacy-pci-device, pci-express-device Slot count: 1 available: no hotpluggable: no valid device_add arguments: function: 0 device-number: 0 bus: pcie.0 Slot set for: legacy-pci-device, pci-express-device Slot count: 7 available: yes hotpluggable: no valid device_add arguments: function: 1-7 device-number: 0 bus: pcie.0 Slot set for: legacy-pci-device, pci-express-device Slot count: 1 available: no hotpluggable: no valid device_add arguments: function: 0 device-number: 1 bus: pcie.0 Slot set for: legacy-pci-device, pci-express-device Slot count: 7 available: yes hotpluggable: no valid device_add arguments: function: 1-7 device-number: 1 bus: pcie.0 Slot set for: legacy-pci-device, pci-express-device Slot count: 1 available: no hotpluggable: no valid device_add arguments: function: 0 device-number: 2 bus: pcie.0 Slot set for: legacy-pci-device, pci-express-device Slot count: 7 available: yes hotpluggable: no valid device_add arguments: function: 1-7 device-number: 2 bus: pcie.0 Slot set for: legacy-pci-device, pci-express-device Slot count: 1 available: no hotpluggable: no valid device_add arguments: function: 0 device-number: 26 bus: pcie.0 Slot set for: legacy-pci-device, pci-express-device Slot count: 1 available: no hotpluggable: no valid device_add arguments: function: 1 device-number: 26 bus: pcie.0 Slot set for: legacy-pci-device, pci-express-device Slot count: 1 available: no hotpluggable: no valid device_add arguments: function: 2 device-number: 26 bus: pcie.0 Slot set for: legacy-pci-device, pci-express-device Slot count: 1 available: no hotpluggable: no valid device_add arguments: function: 7 device-number: 26 bus: pcie.0 Slot set for: legacy-pci-device, pci-express-device Slot count: 4 available: yes hotpluggable: no valid device_add arguments: function: 3-6 device-number: 26 bus: pcie.0 Slot set for: legacy-pci-device, pci-express-device Slot count: 1 available: no hotpluggable: no valid device_add arguments: function: 0 device-number: 27 bus: pcie.0 Slot set for: legacy-pci-device, pci-express-device Slot count: 7 available: yes hotpluggable: no valid device_add arguments: function: 1-7 device-number: 27 bus: pcie.0 Slot set for: legacy-pci-device, pci-express-device Slot count: 1 available: no hotpluggable: no valid device_add arguments: function: 0 device-number: 28 bus: pcie.0 Slot set for: legacy-pci-device, pci-express-device Slot count: 1 available: no hotpluggable: no valid device_add arguments: function: 1 device-number: 28 bus: pcie.0 Slot set for: legacy-pci-device, pci-express-device Slot count: 1 available: no hotpluggable: no valid device_add arguments: function: 2 device-number: 28 bus: pcie.0 Slot set for: legacy-pci-device, pci-express-device Slot count: 1 available: no hotpluggable: no valid device_add arguments: function: 3 device-number: 28 bus: pcie.0 Slot set for: legacy-pci-device, pci-express-device Slot count: 4 available: yes hotpluggable: no valid device_add arguments: function: 4-7 device-number: 28 bus: pcie.0 Slot set for: legacy-pci-device, pci-express-device Slot count: 1 available: no hotpluggable: no valid device_add arguments: function: 0 device-number: 29 bus: pcie.0 Slot set for: legacy-pci-device, pci-express-device Slot count: 1 available: no hotpluggable: no valid device_add arguments: function: 1 device-number: 29 bus: pcie.0 Slot set for: legacy-pci-device, pci-express-device Slot count: 1 available: no hotpluggable: no valid device_add arguments: function: 2 device-number: 29 bus: pcie.0 Slot set for: legacy-pci-device, pci-express-device Slot count: 1 available: no hotpluggable: no valid device_add arguments: function: 7 device-number: 29 bus: pcie.0 Slot set for: legacy-pci-device, pci-express-device Slot count: 4 available: yes hotpluggable: no valid device_add arguments: function: 3-6 device-number: 29 bus: pcie.0 Slot set for: legacy-pci-device, pci-express-device Slot count: 1 available: no hotpluggable: no valid device_add arguments: function: 0 device-number: 30 bus: pcie.0 Slot set for: legacy-pci-device, pci-express-device Slot count: 7 available: yes hotpluggable: no valid device_add arguments: function: 1-7 device-number: 30 bus: pcie.0 Slot set for: legacy-pci-device, pci-express-device Slot count: 1 available: no hotpluggable: no valid device_add arguments: function: 0 device-number: 31 bus: pcie.0 Slot set for: legacy-pci-device, pci-express-device Slot count: 1 available: no hotpluggable: no valid device_add arguments: function: 2 device-number: 31 bus: pcie.0 Slot set for: legacy-pci-device, pci-express-device Slot count: 1 available: no hotpluggable: no valid device_add arguments: function: 3 device-number: 31 bus: pcie.0 Slot set for: legacy-pci-device, pci-express-device Slot count: 5 available: yes hotpluggable: no valid device_add arguments: function: 1,4-7 device-number: 31 bus: pcie.0 Slot set for: legacy-pci-device, pci-express-device Slot count: 184 available: yes hotpluggable: no valid device_add arguments: function: 0-7 device-number: 3-25 bus: pcie.0 Slot set for: pci-express-device Slot count: 8 available: yes hotpluggable: yes valid device_add arguments: function: 0-7 device-number: 0 bus: ich9-pcie-port-1 Slot set for: pci-express-device Slot count: 8 available: yes hotpluggable: yes valid device_add arguments: function: 0-7 device-number: 0 bus: ich9-pcie-port-2 Slot set for: pci-express-device Slot count: 8 available: yes hotpluggable: yes valid device_add arguments: function: 0-7 device-number: 0 bus: ich9-pcie-port-3 Slot set for: pci-express-device Slot count: 8 available: yes hotpluggable: yes valid device_add arguments: function: 0-7 device-number: 0 bus: ich9-pcie-port-4 Slot set for: legacy-pci-device Slot count: 256 available: yes hotpluggable: no valid device_add arguments: function: 0-7 device-number: 0-31 bus: ich9-pci-bridge Slot set for: usb-device Incomplete set available: yes hotpluggable: yes valid device_add arguments: bus: ich9-ehci-1.0 Slot set for: usb-device Incomplete set available: yes hotpluggable: yes valid device_add arguments: bus: ich9-ehci-2.0 Slot set for: hda-codec Incomplete set available: no hotpluggable: no valid device_add arguments: bus: ich9-hda-audio.0 Slot set for: qemu64-x86_64-cpu Slot count: 1 available: yes hotpluggable: yes valid device_add arguments: socket-id: 1 thread-id: 1 core-id: 1 Slot set for: qemu64-x86_64-cpu Slot count: 1 available: yes hotpluggable: yes valid device_add arguments: socket-id: 1 thread-id: 0 core-id: 1 Slot set for: qemu64-x86_64-cpu Slot count: 1 available: yes hotpluggable: yes valid device_add arguments: socket-id: 1 thread-id: 1 core-id: 0 Slot set for: qemu64-x86_64-cpu Slot count: 1 available: yes hotpluggable: yes valid device_add arguments: socket-id: 1 thread-id: 0 core-id: 0 Slot set for: qemu64-x86_64-cpu Slot count: 1 available: no hotpluggable: yes valid device_add arguments: socket-id: 0 thread-id: 1 core-id: 1 Slot set for: qemu64-x86_64-cpu Slot count: 1 available: no hotpluggable: yes valid device_add arguments: socket-id: 0 thread-id: 0 core-id: 1 Slot set for: qemu64-x86_64-cpu Slot count: 1 available: no hotpluggable: yes valid device_add arguments: socket-id: 0 thread-id: 1 core-id: 0 Slot set for: qemu64-x86_64-cpu Slot count: 1 available: no hotpluggable: yes valid device_add arguments: socket-id: 0 thread-id: 0 core-id: 0 Raw JSON data for the above: { "return": [ { "available": false, "hotpluggable": false, "props": [ { "values": { "data": [ "i2c" ], "type": "list" }, "option": "bus" } ], "incomplete": true, "accepted-device-types": [ "i2c-slave" ] }, { "available": false, "hotpluggable": false, "props": [ { "values": { "data": [ "ide.4" ], "type": "list" }, "option": "bus" } ], "incomplete": true, "accepted-device-types": [ "ide-device" ] }, { "available": false, "hotpluggable": false, "props": [ { "values": { "data": [ "ide.5" ], "type": "list" }, "option": "bus" } ], "incomplete": true, "accepted-device-types": [ "ide-device" ] }, { "available": false, "hotpluggable": false, "props": [ { "values": { "data": [ "ide.0" ], "type": "list" }, "option": "bus" } ], "incomplete": true, "accepted-device-types": [ "ide-device" ] }, { "available": false, "hotpluggable": false, "props": [ { "values": { "data": [ "ide.1" ], "type": "list" }, "option": "bus" } ], "incomplete": true, "accepted-device-types": [ "ide-device" ] }, { "available": false, "hotpluggable": false, "props": [ { "values": { "data": [ "ide.2" ], "type": "list" }, "option": "bus" } ], "incomplete": true, "accepted-device-types": [ "ide-device" ] }, { "available": false, "hotpluggable": false, "props": [ { "values": { "data": [ "ide.3" ], "type": "list" }, "option": "bus" } ], "incomplete": true, "accepted-device-types": [ "ide-device" ] }, { "available": false, "hotpluggable": false, "props": [ { "values": { "data": [ "main-system-bus" ], "type": "list" }, "option": "bus" } ], "incomplete": true, "accepted-device-types": [ "sys-bus-device" ] }, { "available": false, "hotpluggable": false, "props": [ { "values": { "data": [ "isa.0" ], "type": "list" }, "option": "bus" } ], "incomplete": true, "accepted-device-types": [ "isa-device" ] }, { "available": false, "count": 1, "accepted-device-types": [ "legacy-pci-device", "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 0, "min": 0 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 0, "min": 0 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "pcie.0" ], "type": "list" }, "option": "bus" } ], "hotpluggable": false, "incomplete": false }, { "available": true, "count": 7, "accepted-device-types": [ "legacy-pci-device", "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 7, "min": 1 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 0, "min": 0 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "pcie.0" ], "type": "list" }, "option": "bus" } ], "hotpluggable": false, "incomplete": false }, { "available": false, "count": 1, "accepted-device-types": [ "legacy-pci-device", "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 0, "min": 0 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 1, "min": 1 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "pcie.0" ], "type": "list" }, "option": "bus" } ], "hotpluggable": false, "incomplete": false }, { "available": true, "count": 7, "accepted-device-types": [ "legacy-pci-device", "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 7, "min": 1 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 1, "min": 1 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "pcie.0" ], "type": "list" }, "option": "bus" } ], "hotpluggable": false, "incomplete": false }, { "available": false, "count": 1, "accepted-device-types": [ "legacy-pci-device", "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 0, "min": 0 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 2, "min": 2 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "pcie.0" ], "type": "list" }, "option": "bus" } ], "hotpluggable": false, "incomplete": false }, { "available": true, "count": 7, "accepted-device-types": [ "legacy-pci-device", "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 7, "min": 1 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 2, "min": 2 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "pcie.0" ], "type": "list" }, "option": "bus" } ], "hotpluggable": false, "incomplete": false }, { "available": false, "count": 1, "accepted-device-types": [ "legacy-pci-device", "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 0, "min": 0 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 26, "min": 26 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "pcie.0" ], "type": "list" }, "option": "bus" } ], "hotpluggable": false, "incomplete": false }, { "available": false, "count": 1, "accepted-device-types": [ "legacy-pci-device", "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 1, "min": 1 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 26, "min": 26 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "pcie.0" ], "type": "list" }, "option": "bus" } ], "hotpluggable": false, "incomplete": false }, { "available": false, "count": 1, "accepted-device-types": [ "legacy-pci-device", "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 2, "min": 2 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 26, "min": 26 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "pcie.0" ], "type": "list" }, "option": "bus" } ], "hotpluggable": false, "incomplete": false }, { "available": false, "count": 1, "accepted-device-types": [ "legacy-pci-device", "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 7, "min": 7 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 26, "min": 26 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "pcie.0" ], "type": "list" }, "option": "bus" } ], "hotpluggable": false, "incomplete": false }, { "available": true, "count": 4, "accepted-device-types": [ "legacy-pci-device", "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 6, "min": 3 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 26, "min": 26 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "pcie.0" ], "type": "list" }, "option": "bus" } ], "hotpluggable": false, "incomplete": false }, { "available": false, "count": 1, "accepted-device-types": [ "legacy-pci-device", "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 0, "min": 0 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 27, "min": 27 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "pcie.0" ], "type": "list" }, "option": "bus" } ], "hotpluggable": false, "incomplete": false }, { "available": true, "count": 7, "accepted-device-types": [ "legacy-pci-device", "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 7, "min": 1 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 27, "min": 27 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "pcie.0" ], "type": "list" }, "option": "bus" } ], "hotpluggable": false, "incomplete": false }, { "available": false, "count": 1, "accepted-device-types": [ "legacy-pci-device", "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 0, "min": 0 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 28, "min": 28 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "pcie.0" ], "type": "list" }, "option": "bus" } ], "hotpluggable": false, "incomplete": false }, { "available": false, "count": 1, "accepted-device-types": [ "legacy-pci-device", "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 1, "min": 1 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 28, "min": 28 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "pcie.0" ], "type": "list" }, "option": "bus" } ], "hotpluggable": false, "incomplete": false }, { "available": false, "count": 1, "accepted-device-types": [ "legacy-pci-device", "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 2, "min": 2 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 28, "min": 28 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "pcie.0" ], "type": "list" }, "option": "bus" } ], "hotpluggable": false, "incomplete": false }, { "available": false, "count": 1, "accepted-device-types": [ "legacy-pci-device", "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 3, "min": 3 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 28, "min": 28 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "pcie.0" ], "type": "list" }, "option": "bus" } ], "hotpluggable": false, "incomplete": false }, { "available": true, "count": 4, "accepted-device-types": [ "legacy-pci-device", "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 7, "min": 4 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 28, "min": 28 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "pcie.0" ], "type": "list" }, "option": "bus" } ], "hotpluggable": false, "incomplete": false }, { "available": false, "count": 1, "accepted-device-types": [ "legacy-pci-device", "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 0, "min": 0 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 29, "min": 29 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "pcie.0" ], "type": "list" }, "option": "bus" } ], "hotpluggable": false, "incomplete": false }, { "available": false, "count": 1, "accepted-device-types": [ "legacy-pci-device", "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 1, "min": 1 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 29, "min": 29 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "pcie.0" ], "type": "list" }, "option": "bus" } ], "hotpluggable": false, "incomplete": false }, { "available": false, "count": 1, "accepted-device-types": [ "legacy-pci-device", "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 2, "min": 2 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 29, "min": 29 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "pcie.0" ], "type": "list" }, "option": "bus" } ], "hotpluggable": false, "incomplete": false }, { "available": false, "count": 1, "accepted-device-types": [ "legacy-pci-device", "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 7, "min": 7 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 29, "min": 29 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "pcie.0" ], "type": "list" }, "option": "bus" } ], "hotpluggable": false, "incomplete": false }, { "available": true, "count": 4, "accepted-device-types": [ "legacy-pci-device", "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 6, "min": 3 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 29, "min": 29 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "pcie.0" ], "type": "list" }, "option": "bus" } ], "hotpluggable": false, "incomplete": false }, { "available": false, "count": 1, "accepted-device-types": [ "legacy-pci-device", "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 0, "min": 0 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 30, "min": 30 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "pcie.0" ], "type": "list" }, "option": "bus" } ], "hotpluggable": false, "incomplete": false }, { "available": true, "count": 7, "accepted-device-types": [ "legacy-pci-device", "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 7, "min": 1 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 30, "min": 30 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "pcie.0" ], "type": "list" }, "option": "bus" } ], "hotpluggable": false, "incomplete": false }, { "available": false, "count": 1, "accepted-device-types": [ "legacy-pci-device", "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 0, "min": 0 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 31, "min": 31 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "pcie.0" ], "type": "list" }, "option": "bus" } ], "hotpluggable": false, "incomplete": false }, { "available": false, "count": 1, "accepted-device-types": [ "legacy-pci-device", "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 2, "min": 2 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 31, "min": 31 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "pcie.0" ], "type": "list" }, "option": "bus" } ], "hotpluggable": false, "incomplete": false }, { "available": false, "count": 1, "accepted-device-types": [ "legacy-pci-device", "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 3, "min": 3 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 31, "min": 31 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "pcie.0" ], "type": "list" }, "option": "bus" } ], "hotpluggable": false, "incomplete": false }, { "available": true, "count": 5, "accepted-device-types": [ "legacy-pci-device", "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 1, "min": 1 }, { "max": 7, "min": 4 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 31, "min": 31 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "pcie.0" ], "type": "list" }, "option": "bus" } ], "hotpluggable": false, "incomplete": false }, { "available": true, "count": 184, "accepted-device-types": [ "legacy-pci-device", "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 7, "min": 0 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 25, "min": 3 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "pcie.0" ], "type": "list" }, "option": "bus" } ], "hotpluggable": false, "incomplete": false }, { "available": true, "count": 8, "accepted-device-types": [ "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 7, "min": 0 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 0, "min": 0 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "ich9-pcie-port-1" ], "type": "list" }, "option": "bus" } ], "hotpluggable": true, "incomplete": false }, { "available": true, "count": 8, "accepted-device-types": [ "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 7, "min": 0 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 0, "min": 0 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "ich9-pcie-port-2" ], "type": "list" }, "option": "bus" } ], "hotpluggable": true, "incomplete": false }, { "available": true, "count": 8, "accepted-device-types": [ "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 7, "min": 0 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 0, "min": 0 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "ich9-pcie-port-3" ], "type": "list" }, "option": "bus" } ], "hotpluggable": true, "incomplete": false }, { "available": true, "count": 8, "accepted-device-types": [ "pci-express-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 7, "min": 0 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 0, "min": 0 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "ich9-pcie-port-4" ], "type": "list" }, "option": "bus" } ], "hotpluggable": true, "incomplete": false }, { "available": true, "count": 256, "accepted-device-types": [ "legacy-pci-device" ], "props": [ { "values": { "data": { "ranges": [ { "max": 7, "min": 0 } ] }, "type": "int-set" }, "option": "function" }, { "values": { "data": { "ranges": [ { "max": 31, "min": 0 } ] }, "type": "int-set" }, "option": "device-number" }, { "values": { "data": [ "ich9-pci-bridge" ], "type": "list" }, "option": "bus" } ], "hotpluggable": false, "incomplete": false }, { "available": true, "hotpluggable": true, "props": [ { "values": { "data": [ "ich9-ehci-1.0" ], "type": "list" }, "option": "bus" } ], "incomplete": true, "accepted-device-types": [ "usb-device" ] }, { "available": true, "hotpluggable": true, "props": [ { "values": { "data": [ "ich9-ehci-2.0" ], "type": "list" }, "option": "bus" } ], "incomplete": true, "accepted-device-types": [ "usb-device" ] }, { "available": false, "hotpluggable": false, "props": [ { "values": { "data": [ "ich9-hda-audio.0" ], "type": "list" }, "option": "bus" } ], "incomplete": true, "accepted-device-types": [ "hda-codec" ] }, { "available": true, "count": 1, "accepted-device-types": [ "qemu64-x86_64-cpu" ], "props": [ { "values": { "data": [ 1 ], "type": "list" }, "option": "socket-id" }, { "values": { "data": [ 1 ], "type": "list" }, "option": "thread-id" }, { "values": { "data": [ 1 ], "type": "list" }, "option": "core-id" } ], "hotpluggable": true, "incomplete": false }, { "available": true, "count": 1, "accepted-device-types": [ "qemu64-x86_64-cpu" ], "props": [ { "values": { "data": [ 1 ], "type": "list" }, "option": "socket-id" }, { "values": { "data": [ 0 ], "type": "list" }, "option": "thread-id" }, { "values": { "data": [ 1 ], "type": "list" }, "option": "core-id" } ], "hotpluggable": true, "incomplete": false }, { "available": true, "count": 1, "accepted-device-types": [ "qemu64-x86_64-cpu" ], "props": [ { "values": { "data": [ 1 ], "type": "list" }, "option": "socket-id" }, { "values": { "data": [ 1 ], "type": "list" }, "option": "thread-id" }, { "values": { "data": [ 0 ], "type": "list" }, "option": "core-id" } ], "hotpluggable": true, "incomplete": false }, { "available": true, "count": 1, "accepted-device-types": [ "qemu64-x86_64-cpu" ], "props": [ { "values": { "data": [ 1 ], "type": "list" }, "option": "socket-id" }, { "values": { "data": [ 0 ], "type": "list" }, "option": "thread-id" }, { "values": { "data": [ 0 ], "type": "list" }, "option": "core-id" } ], "hotpluggable": true, "incomplete": false }, { "available": false, "count": 1, "accepted-device-types": [ "qemu64-x86_64-cpu" ], "props": [ { "values": { "data": [ 0 ], "type": "list" }, "option": "socket-id" }, { "values": { "data": [ 1 ], "type": "list" }, "option": "thread-id" }, { "values": { "data": [ 1 ], "type": "list" }, "option": "core-id" } ], "hotpluggable": true, "incomplete": false }, { "available": false, "count": 1, "accepted-device-types": [ "qemu64-x86_64-cpu" ], "props": [ { "values": { "data": [ 0 ], "type": "list" }, "option": "socket-id" }, { "values": { "data": [ 0 ], "type": "list" }, "option": "thread-id" }, { "values": { "data": [ 1 ], "type": "list" }, "option": "core-id" } ], "hotpluggable": true, "incomplete": false }, { "available": false, "count": 1, "accepted-device-types": [ "qemu64-x86_64-cpu" ], "props": [ { "values": { "data": [ 0 ], "type": "list" }, "option": "socket-id" }, { "values": { "data": [ 1 ], "type": "list" }, "option": "thread-id" }, { "values": { "data": [ 0 ], "type": "list" }, "option": "core-id" } ], "hotpluggable": true, "incomplete": false }, { "available": false, "count": 1, "accepted-device-types": [ "qemu64-x86_64-cpu" ], "props": [ { "values": { "data": [ 0 ], "type": "list" }, "option": "socket-id" }, { "values": { "data": [ 0 ], "type": "list" }, "option": "thread-id" }, { "values": { "data": [ 0 ], "type": "list" }, "option": "core-id" } ], "hotpluggable": true, "incomplete": false } ] } Cc: Marcel Apfelbaum <marcel(a)redhat.com> Cc: Markus Armbruster <armbru(a)redhat.com> Cc: libvir-list(a)redhat.com, Cc: Igor Mammedov <imammedo(a)redhat.com> Cc: Laine Stump <laine(a)redhat.com> Cc: "Michael S. Tsirkin" <mst(a)redhat.com> Signed-off-by: Eduardo Habkost <ehabkost(a)redhat.com> --- --- qapi-schema.json | 109 ++++++++++ scripts/qmp/query-slots.py | 50 +++++ include/hw/qdev-core.h | 6 + include/qapi/qobject-output-visitor.h | 9 + hw/core/bus.c | 45 +++++ hw/pci/pci.c | 363 +++++++++++++++++++++++++++++++--- qapi/qobject-output-visitor.c | 14 ++ qdev-monitor.c | 128 +++++++++++- tests/qmp-machine-info.py | 72 +++++-- 9 files changed, 746 insertions(+), 50 deletions(-) create mode 100755 scripts/qmp/query-slots.py diff --git a/qapi-schema.json b/qapi-schema.json index d48ff3f..3d597b5 100644 --- a/qapi-schema.json +++ b/qapi-schema.json @@ -3165,6 +3165,115 @@ ## { 'command': 'closefd', 'data': {'fdname': 'str'} } + +## +# @IntegerSet: +# +# A set of integers. +## +{ 'struct': 'IntegerSet', + 'data': { 'ranges': [ 'IntegerRange' ] } } + +## +# @IntegerRange: +# +# A contiguous range of integers. +# +# @min: The first value in the range +# @max: The last value in the range +## +{ 'struct': 'IntegerRange', + 'data': { 'min': 'int', 'max': 'int' } } + +## +# @ValueSet: +# +# A set of values. +# +# @list: A set of elements in a list. +# +# @int-set: A set represented by an IntegerSet. +## +{ 'union': 'ValueSet', + 'data': { 'list': [ 'any' ], 'int-set': 'IntegerSet' } } + +## +# @SlotOption: +# +# A option to be used when plugging a device to a slot. +# +# @option: Option name. +# +# @values: Set of valid option values. +## +{ 'struct': 'SlotOption', + 'data': { 'option': 'str', 'values': 'ValueSet' } } + +## +# @DeviceSlotInfo: +# +# Information on a set of slots where devices can be plugged. +# +# @type: type of device slot. +# +# @accepted-device-types: List of device types accepted by the slots. +# Any device plugged to the slot should implement +# one of the accepted device types. +# +# @available: If false, the slot is not available for plugging any device. +# This value can change at runtime if condition changes +# (e.g. if the slot becomes full, or if the machine +# was already initialized and the slot doesn't support +# hotplug). +# +# @hotpluggable: If true, the slot accepts hotplugged devices. +# +# @count: #optional Number of slots represented by this slot set. +# Will always be present if @incomplete=false. +# +# @incomplete: Slot information is incomplete. Slot count is not +# available, and additional arguments are missing +# on @props. +# +# @props: Information on the arguments that should be given to +# @device_add if plugging a device to this slot. +# +# How to interpret @props +# ----------------------- +# +# Each key/value pair in @props represent an option that should +# be set when using @device_add to plug a new device. +# +# Each value in @props represent a single value that should be +# provided to @device_add, or a set of possible values for the option. +# +# Incomplete Slot Sets +# -------------------- +# +# Slot sets with @incomplete=true represent a bus that doesn't +# support slot enumeration yet. Slots of this type should be replaced +# by more detailed slot sets in future QEMU versions. +# +# Slots of this type may or may not support multiple devices. +# +# Slots in incomplete slot sets might require extra arguments to +# be set to specify the device address. +## +{ 'struct': 'DeviceSlotInfo', + 'data': { 'accepted-device-types': [ 'str' ], + 'available': 'bool', 'hotpluggable': 'bool', + '*count': 'int', 'incomplete': 'bool', + 'props': [ 'SlotOption' ] } } + +## +# @query-device-slots: +# +# Return the list of possible slots for plugging devices using +# @device_add. +## +{ 'command': 'query-device-slots', + 'returns': [ 'DeviceSlotInfo' ] } + ## # @MachineBusInfo # diff --git a/scripts/qmp/query-slots.py b/scripts/qmp/query-slots.py new file mode 100755 index 0000000..02c60b7 --- /dev/null +++ b/scripts/qmp/query-slots.py @@ -0,0 +1,50 @@ +#!/usr/bin/env python +# test script to dump slot info in a more human-friendly way + +import qmp +import sys + +q = qmp.QEMUMonitorProtocol(sys.argv[1]) +q.connect() +slots = q.command('query-device-slots') +for slot in slots: + types = slot.pop('accepted-device-types') + print 'Slot set for: %s' % (', '.join(types)) + inc = slot.pop('incomplete') + if inc: + print ' Incomplete set' + else: + count = slot.pop('count') + print ' Slot count: %d' % (count) + props = slot.pop('props') + for k,v in slot.items(): + if type(v) == bool: + if v: + v = 'yes' + else: + v = 'no' + elif type(v) == unicode: + v = str(v) + else: + v = repr(v) + print ' %s: %s' % (k, v) + + print ' valid device_add arguments:' + for p in props: + option = p.pop('option') + values = p.pop('values') + assert not p # no other field + valuestr = repr(values) + if values['type'] == 'list': + valuestr = ', '.join(str(v) for v in values['data']) + elif values['type'] == 'int-set': + ranges = [] + for r in values['data']['ranges']: + if r['max'] == r['min']: + ranges.append('%d' % (r['max'])) + else: + ranges.append('%d-%d' % (r['min'], r['max'])) + valuestr = ','.join(ranges) + else: + assert False + print ' %s: %s' % (option, valuestr) diff --git a/include/hw/qdev-core.h b/include/hw/qdev-core.h index a7f9ac4..2cb043a 100644 --- a/include/hw/qdev-core.h +++ b/include/hw/qdev-core.h @@ -214,6 +214,10 @@ struct BusClass { * but on some cases bus instances may override it. */ const char *device_type; + + /*TODO: write doc */ + DeviceSlotInfoList *(*enumerate_slots)(BusState *bus, Error **errp); + }; typedef struct BusChild { @@ -412,4 +416,6 @@ static inline bool qbus_is_hotpluggable(BusState *bus) void device_listener_register(DeviceListener *listener); void device_listener_unregister(DeviceListener *listener); +bool qbus_is_full(BusState *bus); + #endif diff --git a/include/qapi/qobject-output-visitor.h b/include/qapi/qobject-output-visitor.h index 8241877..319985e 100644 --- a/include/qapi/qobject-output-visitor.h +++ b/include/qapi/qobject-output-visitor.h @@ -16,6 +16,7 @@ #include "qapi/visitor.h" #include "qapi/qmp/qobject.h" +#include "qapi/error.h" typedef struct QObjectOutputVisitor QObjectOutputVisitor; @@ -27,4 +28,12 @@ typedef struct QObjectOutputVisitor QObjectOutputVisitor; */ Visitor *qobject_output_visitor_new(QObject **result); +QObject *qapi_to_qobject(const void *src, + void (*visit_fn)(Visitor *, const char *, + void**, Error **)); + +#define QAPI_TO_QOBJ(type, src) \ + (qapi_to_qobject((src), (void (*)(Visitor *, const char *, void**, \ + Error **))visit_type_ ## type)) + #endif diff --git a/hw/core/bus.c b/hw/core/bus.c index d2bf717..2f47fe1 100644 --- a/hw/core/bus.c +++ b/hw/core/bus.c @@ -21,7 +21,9 @@ #include "qemu-common.h" #include "hw/qdev.h" #include "qapi/error.h" +#include "qapi/clone-visitor.h" #include "qapi-visit.h" +#include "qapi/qmp/qstring.h" static void qbus_set_hotplug_handler_internal(BusState *bus, Object *handler, Error **errp) @@ -225,12 +227,55 @@ static void bus_get_device_type(Object *obj, Visitor *v, visit_type_strList(v, NULL, &bus->accepted_device_types, errp); } +bool qbus_is_full(BusState *bus) +{ + BusClass *bus_class = BUS_GET_CLASS(bus); + return bus_class->max_dev && bus->max_index >= bus_class->max_dev; +} + +/* Generic slot enumeration function that will return a generic-slot slot type. + */ +static DeviceSlotInfoList *bus_generic_enumerate_slots(BusState *bus, Error **errp) +{ + Error *local_err = NULL; + DeviceSlotInfoList *r = g_new0(DeviceSlotInfoList, 1); + + r->value = g_new0(DeviceSlotInfo, 1); + r->value->accepted_device_types = QAPI_CLONE(strList, bus->accepted_device_types); + + r->value->hotpluggable = qbus_is_hotpluggable(bus); + + r->value->incomplete = true; + + /* Conditions that make a bus unavailable: + * - Bus already full + * - Hotplug when the bus is not hotpluggable + */ + r->value->available = + !(qbus_is_full(bus) || + (qdev_hotplug && !qbus_is_hotpluggable(bus))); + + + /* r->value->props = { 'bus': bus->name } */ + r->value->props = g_new0(SlotOptionList, 1); + r->value->props->value = g_new0(SlotOption, 1); + r->value->props->value->option = g_strdup("bus"); + r->value->props->value->values = g_new0(ValueSet, 1); + r->value->props->value->values->type = VALUE_SET_KIND_LIST;; + r->value->props->value->values->u.list.data = g_new0(anyList, 1); + r->value->props->value->values->u.list.data->value = QOBJECT(qstring_from_str(bus->name)); + + error_propagate(errp, local_err); + return r; +} + static void bus_class_init(ObjectClass *class, void *data) { BusClass *bc = BUS_CLASS(class); class->unparent = bus_unparent; bc->get_fw_dev_path = default_bus_get_fw_dev_path; + bc->enumerate_slots = bus_generic_enumerate_slots; object_class_property_add(class, "accepted-device-types", "strList", bus_get_device_type, NULL, NULL, NULL, diff --git a/hw/pci/pci.c b/hw/pci/pci.c index 2eac71a..26721a6 100644 --- a/hw/pci/pci.c +++ b/hw/pci/pci.c @@ -41,6 +41,8 @@ #include "hw/hotplug.h" #include "hw/boards.h" #include "qemu/cutils.h" +#include "qapi/clone-visitor.h" +#include "qapi/qmp/qstring.h" //#define DEBUG_PCI #ifdef DEBUG_PCI @@ -141,6 +143,8 @@ static uint16_t pcibus_numa_node(PCIBus *bus) return NUMA_NODE_UNASSIGNED; } +static DeviceSlotInfoList *pci_bus_enumerate_slots(BusState *bus, Error **errp); + static void pci_bus_class_init(ObjectClass *klass, void *data) { BusClass *k = BUS_CLASS(klass); @@ -156,6 +160,7 @@ static void pci_bus_class_init(ObjectClass *klass, void *data) * but overrides BusClass::device_type to INTERFACE_PCIE_DEVICE */ k->device_type = INTERFACE_LEGACY_PCI_DEVICE; + k->enumerate_slots = pci_bus_enumerate_slots; pbc->is_root = pcibus_is_root; pbc->bus_num = pcibus_num; @@ -967,6 +972,274 @@ uint16_t pci_requester_id(PCIDevice *dev) return pci_req_id_cache_extract(&dev->requester_id_cache); } +static bool pci_bus_has_pcie_upstream_port(PCIBus *bus) +{ + PCIDevice *parent_dev = pci_bridge_get_device(bus); + + /* Device associated with an upstream port. + * As there are several types of these, it's easier to check the + * parent device: upstream ports are always connected to + * root or downstream ports. + */ + return parent_dev && + pci_is_express(parent_dev) && + parent_dev->exp.exp_cap && + (pcie_cap_get_type(parent_dev) == PCI_EXP_TYPE_ROOT_PORT || + pcie_cap_get_type(parent_dev) == PCI_EXP_TYPE_DOWNSTREAM); +} + +static PCIDevice *pci_bus_get_function_0(PCIBus *bus, int devfn) +{ + if(pci_bus_has_pcie_upstream_port(bus)) { + /* With an upstream PCIe port, we only support 1 device at slot 0 */ + return bus->devices[0]; + } else { + /* Other bus types might support multiple devices at slots 0-31 */ + return bus->devices[PCI_DEVFN(PCI_SLOT(devfn), 0)]; + } +} + +PCIDevice *pci_get_function_0(PCIDevice *pci_dev) +{ + return pci_bus_get_function_0(pci_dev->bus, pci_dev->devfn); +} + +static bool int_set_empty(IntegerSet *set) +{ + return !set->ranges; +} + +static int int_range_size(IntegerRange *range) +{ + return range->max - range->min + 1; +} + +static int int_set_size(IntegerSet *set) +{ + int r = 0; + IntegerRangeList *rl; + for (rl = set->ranges; rl; rl = rl->next) { + r += int_range_size(rl->value); + } + return r; +} + +static void int_set_add(IntegerSet *set, int min, int max) +{ + IntegerRangeList *rl; + IntegerRangeList **pnext = &set->ranges; + IntegerRangeList *prev = NULL; + + for (rl = set->ranges; rl; rl = rl->next) { + IntegerRange *r = rl->value; + if (max < r->min - 1) { + goto insert; + } else if (max <= r->max) { + r->min = min; + goto try_merge_back; + } else if (min == r->max + 1) { + r->max = max; + goto try_merge_front; + } else { + pnext = &rl->next; + prev = rl; + } + } + +insert: + rl = g_new0(IntegerRangeList, 1); + rl->value = g_new0(IntegerRange, 1); + rl->value->min = min; + rl->value->max = max; + rl->next = *pnext; + *pnext = rl; + +try_merge_back: + /*TODO: can't merge more than 1 range */ + if (prev && prev->value->max == rl->value->min - 1) { + prev->value->max = rl->value->max; + prev->next = rl->next; + g_free(rl); + } + +try_merge_front: + while (rl->next && rl->value->max + 1 == rl->next->value->min) { + IntegerRangeList *old = rl->next; + rl->next = old->next; + g_free(old); + } +} + +static ValueSet *new_slot_prop(DeviceSlotInfo *slot, const char *option, ValueSetKind type) +{ + SlotOptionList *l = g_new0(SlotOptionList, 1); + SlotOption *opt = g_new0(SlotOption, 1); + ValueSet *vs = g_new0(ValueSet, 1); + + vs->type = type; + opt->option = g_strdup(option); + opt->values = vs; + l->value = opt; + l->next = slot->props; + slot->props = l; + return vs; +} + +static void value_set_list_append(ValueSet *vs, QObject *value) +{ + anyList *new = g_new0(anyList, 1); + + assert(vs->type == VALUE_SET_KIND_LIST); + new->value = value; + new->next = vs->u.list.data; + vs->u.list.data = new; +} + +static DeviceSlotInfoList *pci_bus_enumerate_slots(BusState *bus, Error **errp) +{ + PCIBus *pb = PCI_BUS(bus); + int devnr, devnrs; + DeviceSlotInfoList *r = NULL; + DeviceSlotInfoList **next = &r; + IntegerSet *empty_slots = g_new0(IntegerSet, 1); + + if (pci_bus_has_pcie_upstream_port(pb)) { + devnrs = 1; + } else { + devnrs = PCI_SLOT_MAX; + } + + /* Each PCI devfn (device number + function) is a separate slot, + * because we implement multi-function PCI devices as separate + * device objects. + * + * As an experiment, return a slot set for each device number. + */ + for(devnr = PCI_SLOT(pb->devfn_min); devnr < devnrs; devnr++) { + IntegerSet *empty_funcs = g_new0(IntegerSet, 1); + + int func; + for (func = 0; func < PCI_FUNC_MAX; func++) { + if (pb->devices[PCI_DEVFN(devnr, func)]) { + break; + } + } + if (func == PCI_FUNC_MAX) { + /* All functions are empty, we can return the whole slot in the "empty" slot set */ + int_set_add(empty_slots, devnr, devnr); + continue; + } + + /* Not all functions are empty, so return one entry for each function */ + for (func = 0; func < PCI_FUNC_MAX; func++) { + /* Empty functions will be reported as a single slot set later: */ + if (!pb->devices[PCI_DEVFN(devnr, func)]) { + int_set_add(empty_funcs, func, func); + continue; + } + + DeviceSlotInfoList *i = g_new0(DeviceSlotInfoList, 1); + i->value = g_new0(DeviceSlotInfo, 1); + /*TODO: add info about accepting only bridges on extra PCI root buses */ + i->value->accepted_device_types = QAPI_CLONE(strList, bus->accepted_device_types); + + i->value->hotpluggable = qbus_is_hotpluggable(bus); + + /* Conditions that make a devnr unavailable: + * - function already occupied + * - function 0 already occupied by a device + * - Hotplug when the bus is not hotpluggable + */ + i->value->available = + !((pb->devices[PCI_DEVFN(devnr, func)]) || + (pb->devices[PCI_DEVFN(devnr, 0)]) || + (0 && qdev_hotplug && !qbus_is_hotpluggable(bus))); + + ValueSet *bus_values = new_slot_prop(i->value, "bus", VALUE_SET_KIND_LIST); + value_set_list_append(bus_values, QOBJECT(qstring_from_str(bus->name))); + + ValueSet *dev_values = new_slot_prop(i->value, "device-number", VALUE_SET_KIND_INT_SET); + dev_values->u.int_set.data = g_new0(IntegerSet, 1); + int_set_add(dev_values->u.int_set.data, devnr, devnr); + + ValueSet *func_values = new_slot_prop(i->value, "function", VALUE_SET_KIND_INT_SET); + func_values->u.int_set.data = g_new0(IntegerSet, 1); + int_set_add(func_values->u.int_set.data, func, func); + + i->value->has_count = true; + i->value->count = 1; + + *next = i; + next = &i->next; + } + + if (!int_set_empty(empty_funcs)) { + DeviceSlotInfoList *i = g_new0(DeviceSlotInfoList, 1); + i->value = g_new0(DeviceSlotInfo, 1); + /*TODO: add info about accepting only bridges on extra PCI root buses */ + i->value->accepted_device_types = QAPI_CLONE(strList, bus->accepted_device_types); + + i->value->hotpluggable = qbus_is_hotpluggable(bus); + + i->value->available = + !(0 && qdev_hotplug && !qbus_is_hotpluggable(bus)); + + ValueSet *bus_values = new_slot_prop(i->value, "bus", VALUE_SET_KIND_LIST); + value_set_list_append(bus_values, QOBJECT(qstring_from_str(bus->name))); + + ValueSet *dev_values = new_slot_prop(i->value, "device-number", VALUE_SET_KIND_INT_SET); + dev_values->u.int_set.data = g_new0(IntegerSet, 1); + int_set_add(dev_values->u.int_set.data, devnr, devnr); + + ValueSet *func_values = new_slot_prop(i->value, "function", VALUE_SET_KIND_INT_SET); + func_values->u.int_set.data = empty_funcs; + + i->value->has_count = true; + i->value->count = int_set_size(empty_funcs); + + *next = i; + next = &i->next; + } else { + qapi_free_IntegerSet(empty_slots); + } + } + + /* Return a single slot set for the empty slots */ + if (!int_set_empty(empty_slots)) { + DeviceSlotInfoList *i = g_new0(DeviceSlotInfoList, 1); + i->value = g_new0(DeviceSlotInfo, 1); + /*TODO: add info about accepting only bridges on extra PCI root buses */ + i->value->accepted_device_types = QAPI_CLONE(strList, bus->accepted_device_types); + + i->value->hotpluggable = qbus_is_hotpluggable(bus); + + /* Conditions that make a devnr unavailable: + * - function 0 already occupied by a device + * - Hotplug when the bus is not hotpluggable + */ + i->value->available = !(0 && qdev_hotplug && !qbus_is_hotpluggable(bus)); + + ValueSet *bus_values = new_slot_prop(i->value, "bus", VALUE_SET_KIND_LIST); + value_set_list_append(bus_values, QOBJECT(qstring_from_str(bus->name))); + + ValueSet *dev_values = new_slot_prop(i->value, "device-number", VALUE_SET_KIND_INT_SET); + dev_values->u.int_set.data = empty_slots; + + ValueSet *func_values = new_slot_prop(i->value, "function", VALUE_SET_KIND_INT_SET); + func_values->u.int_set.data = g_new0(IntegerSet, 1); + int_set_add(func_values->u.int_set.data, 0, PCI_FUNC_MAX - 1); + + i->value->has_count = true; + i->value->count = PCI_FUNC_MAX * int_set_size(empty_slots); + + *next = i; + next = &i->next; + } else { + qapi_free_IntegerSet(empty_slots); + } + return r; +} + /* -1 for devfn means auto assign */ static PCIDevice *do_pci_register_device(PCIDevice *pci_dev, PCIBus *bus, const char *name, int devfn, @@ -2509,6 +2782,56 @@ MemoryRegion *pci_address_space_io(PCIDevice *dev) return dev->bus->address_space_io; } +static void pci_device_get_devnr(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + PCIDevice *dev = PCI_DEVICE(obj); + uint32_t devnr = PCI_SLOT(dev->devfn); + + visit_type_uint32(v, "device-number", &devnr, errp); +} + +static void pci_device_set_devnr(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + PCIDevice *dev = PCI_DEVICE(obj); + uint32_t devnr; + Error *local_err = NULL; + + visit_type_uint32(v, "device-number", &devnr, &local_err); + if (local_err) { + goto out; + } + dev->devfn = PCI_DEVFN(devnr, PCI_FUNC(dev->devfn)); +out: + error_propagate(errp, local_err); +} + +static void pci_device_get_function(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + PCIDevice *dev = PCI_DEVICE(obj); + uint32_t function = PCI_FUNC(dev->devfn); + + visit_type_uint32(v, "function", &function, errp); +} + +static void pci_device_set_function(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + PCIDevice *dev = PCI_DEVICE(obj); + uint32_t function; + Error *local_err = NULL; + + visit_type_uint32(v, "function", &function, &local_err); + if (local_err) { + goto out; + } + dev->devfn = PCI_DEVFN(PCI_SLOT(dev->devfn), function); +out: + error_propagate(errp, local_err); +} + static void pci_device_class_init(ObjectClass *klass, void *data) { DeviceClass *k = DEVICE_CLASS(klass); @@ -2519,6 +2842,19 @@ static void pci_device_class_init(ObjectClass *klass, void *data) k->bus_type = TYPE_PCI_BUS; k->props = pci_props; pc->realize = pci_default_realize; + + /* Internally, bits 3:8 of devfn are called "slots", but: + * - they can be confused with physical slot numbers; + * - TYPE_PCIE_SLOT objects already have a "slot" property. + * So we use the terminology used in the PCI specifiction: + * "device number". + */ + object_class_property_add(klass, "device-number", "uint32", + pci_device_get_devnr, pci_device_set_devnr, + NULL, NULL, &error_abort); + object_class_property_add(klass, "function", "uint32", + pci_device_get_function, pci_device_set_function, + NULL, NULL, &error_abort); } static void pci_device_class_base_init(ObjectClass *klass, void *data) @@ -2607,33 +2943,6 @@ void pci_bus_get_w64_range(PCIBus *bus, Range *range) pci_for_each_device_under_bus(bus, pci_dev_get_w64, range); } -static bool pcie_has_upstream_port(PCIDevice *dev) -{ - PCIDevice *parent_dev = pci_bridge_get_device(dev->bus); - - /* Device associated with an upstream port. - * As there are several types of these, it's easier to check the - * parent device: upstream ports are always connected to - * root or downstream ports. - */ - return parent_dev && - pci_is_express(parent_dev) && - parent_dev->exp.exp_cap && - (pcie_cap_get_type(parent_dev) == PCI_EXP_TYPE_ROOT_PORT || - pcie_cap_get_type(parent_dev) == PCI_EXP_TYPE_DOWNSTREAM); -} - -PCIDevice *pci_get_function_0(PCIDevice *pci_dev) -{ - if(pcie_has_upstream_port(pci_dev)) { - /* With an upstream PCIe port, we only support 1 device at slot 0 */ - return pci_dev->bus->devices[0]; - } else { - /* Other bus types might support multiple devices at slots 0-31 */ - return pci_dev->bus->devices[PCI_DEVFN(PCI_SLOT(pci_dev->devfn), 0)]; - } -} - MSIMessage pci_get_msi_message(PCIDevice *dev, int vector) { MSIMessage msg; diff --git a/qapi/qobject-output-visitor.c b/qapi/qobject-output-visitor.c index 8711270..86c3e1b 100644 --- a/qapi/qobject-output-visitor.c +++ b/qapi/qobject-output-visitor.c @@ -252,3 +252,17 @@ Visitor *qobject_output_visitor_new(QObject **result) return &v->visitor; } + +QObject *qapi_to_qobject(const void *src, + void (*visit_fn)(Visitor *, const char *, + void**, Error **)) +{ + QObject *qobj = NULL; + void *obj = (void *) src; + Visitor *v = qobject_output_visitor_new(&qobj); + + visit_fn(v, "unused", &obj, &error_abort); + visit_complete(v, &qobj); + visit_free(v); + return qobj; +} diff --git a/qdev-monitor.c b/qdev-monitor.c index c73410c..4df29c4 100644 --- a/qdev-monitor.c +++ b/qdev-monitor.c @@ -29,6 +29,9 @@ #include "qemu/error-report.h" #include "qemu/help_option.h" #include "sysemu/block-backend.h" +#include "qapi/clone-visitor.h" +#include "qapi/qobject-output-visitor.h" +#include "hw/boards.h" /* * Aliases were a bad idea from the start. Let's keep them @@ -399,12 +402,6 @@ static DeviceState *qbus_find_dev(BusState *bus, char *elem) return NULL; } -static inline bool qbus_is_full(BusState *bus) -{ - BusClass *bus_class = BUS_GET_CLASS(bus); - return bus_class->max_dev && bus->max_index >= bus_class->max_dev; -} - /* * Search the tree rooted at @bus for a bus. * If @name, search for a bus with that name. Note that bus names @@ -631,6 +628,125 @@ DeviceState *qdev_device_add(QemuOpts *opts, Error **errp) return dev; } +typedef struct SlotListState { + MachineState *machine; + DeviceSlotInfoList *result; + DeviceSlotInfoList **next; + Error *err; +} SlotListState; + +static int walk_bus(Object *obj, void *opaque) +{ + SlotListState *s = opaque; + + /* sysbus is special: never return it unless the machine + * supports dynamic sysbus devices. + */ + if (object_dynamic_cast(obj, TYPE_BUS) && + (!object_dynamic_cast(obj, TYPE_SYSTEM_BUS) || + MACHINE_GET_CLASS(s->machine)->has_dynamic_sysbus)) { + BusState *bus = BUS(obj); + BusClass *bc = BUS_GET_CLASS(bus); + DeviceSlotInfoList *l = bc->enumerate_slots(bus, &s->err); + *s->next = l; + for (; l; l = l->next) { + s->next = &l->next; + } + if (s->err) { + return 1; + } + } + return 0; +} + +static void add_option(const char *key, QObject *obj, void *opaque) +{ + SlotOptionList **l = opaque; + SlotOption *opt = g_new0(SlotOption, 1); + SlotOptionList *new = g_new0(SlotOptionList, 1); + + opt->option = g_strdup(key); + opt->values = g_new0(ValueSet, 1); + opt->values->type = VALUE_SET_KIND_LIST; + opt->values->u.list.data = g_new0(anyList, 1); + opt->values->u.list.data->value = obj; + qobject_incref(obj); + + new->next = *l; + new->value = opt; + *l = new; +} + +/* Convert a simple QDict to a list of single-value slot properties */ +static void qdict_to_slot_props(QDict *d, SlotOptionList **l) +{ + qdict_iter(d, add_option, l); +} + +static QObject *cpu_instance_props_to_qobj(CpuInstanceProperties *src, Error **errp) +{ + QObject *qobj = NULL; + Visitor *v = qobject_output_visitor_new(&qobj); + + visit_type_CpuInstanceProperties(v, "unused", &src, &error_abort); + visit_complete(v, &qobj); + visit_free(v); + return qobj; +} + +DeviceSlotInfoList *qmp_query_device_slots(Error **errp) +{ + SlotListState s = { }; + MachineState *ms = MACHINE(qdev_get_machine()); + MachineClass *mc = MACHINE_GET_CLASS(ms); + + s.machine = ms; + s.next = &s.result; + + /* We build the device slot list from two sources: + * 1) Calling the BusClass::enumerate_slots() method on all buses; + * 2) The return value of MachineClass::query_hotpluggable_cpus() + */ + + + object_child_foreach_recursive(qdev_get_machine(), walk_bus, &s); + if (s.err) { + goto out; + } + + if (mc->query_hotpluggable_cpus) { + HotpluggableCPUList *hcl = mc->query_hotpluggable_cpus(ms); + HotpluggableCPUList *i; + + for (i = hcl; i; i = i->next) { + DeviceSlotInfoList *r = g_new0(DeviceSlotInfoList, 1); + HotpluggableCPU *hc = i->value; + QObject *props; + + r->value = g_new0(DeviceSlotInfo, 1); + r->value->accepted_device_types = g_new0(strList, 1); + r->value->accepted_device_types->value = g_strdup(hc->type); + r->value->available = !hc->has_qom_path; + /*TODO: should it be always true? */ + r->value->hotpluggable = true; + r->value->has_count = true; + r->value->count = 1; + + props = cpu_instance_props_to_qobj(hc->props, &s.err); + qdict_to_slot_props(qobject_to_qdict(props), &r->value->props); + + *s.next = r; + s.next = & r->next; + } + + qapi_free_HotpluggableCPUList(hcl); + } + +out: + error_propagate(errp, s.err); + return s.result; +} + #define qdev_printf(fmt, ...) monitor_printf(mon, "%*s" fmt, indent, "", ## __VA_ARGS__) static void qbus_print(Monitor *mon, BusState *bus, int indent); diff --git a/tests/qmp-machine-info.py b/tests/qmp-machine-info.py index 7905afb..850e89a 100755 --- a/tests/qmp-machine-info.py +++ b/tests/qmp-machine-info.py @@ -6,6 +6,8 @@ import qtest import unittest import logging import argparse +import itertools +import operator logger = logging.getLogger('qemu.tests.machineinfo') @@ -35,6 +37,34 @@ NODEFAULTS_BLACKLIST = set([ 'z2', # "qemu: missing SecureDigital device" ]) +# iterators for QAPI ValueSets: +# all of the iterators below should support iter() and len() + +def int_range(d): + """Iterator for IntegerRange""" + return xrange(d['min'], d['max'] + 1) + +class IntegerSet: + """Iterator for IntegerSet""" + def __init__(self, d): + self._ranges = d['ranges'] + + def __iter__(self): + iters = [int_range(r) for r in self._ranges] + return itertools.chain(*iters) + + def __len__(self): + return sum([len(int_range(r)) for r in self._ranges]) + +def value_set(d): + """Iterator for ValueSet""" + if d['type'] == 'list': + return d['data'] + elif d['type'] == 'int-set': + return IntegerSet(d['data']) + else: + raise NotImplementedError + class QueryMachinesTest(unittest.TestCase): def setUp(self): self.vm = None @@ -154,9 +184,12 @@ class QueryMachinesTest(unittest.TestCase): types_to_check = {} buses_to_check = {} for slot in slots: - if slot['props'].has_key('bus'): - bus = slot['props']['bus'] - buses_to_check.setdefault(bus, []).append(slot) + for prop in slot['props']: + if prop['option'] == 'bus': + values = value_set(bus['values']) + self.assertEquals(len(values), 1) + bus = values[0] + buses_to_check.setdefault(v, []).append(slot) for t in slot['accepted-device-types']: types_to_check.setdefault(t, set()).update(slot['props'].keys()) @@ -185,27 +218,32 @@ class QueryMachinesTest(unittest.TestCase): self.assertFalse(slot['available']) def checkSlotInfo(self, args): - #TODO: - # * check if -device works with at least one device type - # * check if query-hotpluggable-cpus matches what's in query-device-slots - # * check if accepted-device-types match the property on the bus - # * check if available=false if len(devices) >= max-devices - # * check if all plugged devices are really in the QOM tree + #TODO: check if: + # * -device works with at least one device type + # * query-hotpluggable-cpus matches what's in query-device-slots + # * accepted-device-types match the property on the bus + # * available=false if hotpluggable=false + # * 'count' is always set if not incomplete + # * slot count is <= set of possible values for @props self.vm = qtest.QEMUQtestMachine(args=args, logging=False) self.vm.launch() slots = self.vm.command('query-device-slots') - self.checkSlotProps(slots) + #self.checkSlotProps(slots) #self.checkSlotDevices(slots) - self.checkAvailableField(slots) + #self.checkAvailableField(slots) + + for slot in slots: + logging.debug('slot: %r', slot) + if not slot['incomplete']: + self.assertTrue(slot.has_key('count')) + + all_counts = [len(value_set(p['values'])) for p in slot['props']] + total_count = reduce(operator.mul, all_counts, 1) + logging.debug('%d possible values', total_count) + self.assertEquals(total_count, slot['count']) def machineTestSlotInfo(self, machine): - #TODO: - # * check if -device works with at least one device type - # * check if query-hotpluggable-cpus matches what's in query-device-slots - # * check if accepted-device-types match the property on the bus - # * check if available=false if len(devices) >= max-devices - # * check if all plugged devices are really in the QOM tree if machine['name'] in BLACKLIST: self.skipTest("machine %s on BLACKLIST" % (machine['name'])) -- 2.7.4

1 0

[libvirt] [PATCH] qemu: block copy: Forbid block copy to relative paths
by Peter Krempa 17 Dec '16

17 Dec '16

Similarly to 29bb066915 forbid paths used with blockjobs to be relative. Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1300177 --- src/conf/snapshot_conf.c | 4 +--- src/libvirt_private.syms | 1 + src/qemu/qemu_driver.c | 6 ++++++ src/util/virstoragefile.c | 31 +++++++++++++++++++++++++++++++ src/util/virstoragefile.h | 2 ++ 5 files changed, 41 insertions(+), 3 deletions(-) diff --git a/src/conf/snapshot_conf.c b/src/conf/snapshot_conf.c index 862c2ec00..5daa8d11a 100644 --- a/src/conf/snapshot_conf.c +++ b/src/conf/snapshot_conf.c @@ -170,9 +170,7 @@ virDomainSnapshotDiskDefParseXML(xmlNodePtr node, } /* validate that the passed path is absolute */ - if (virStorageSourceIsLocalStorage(def->src) && - def->src->path && - def->src->path[0] != '/') { + if (virStorageSourceIsRelative(def->src)) { virReportError(VIR_ERR_XML_ERROR, _("disk snapshot image path '%s' must be absolute"), def->src->path); diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index 7beebbf27..5c82e4a0e 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -2455,6 +2455,7 @@ virStorageSourceInitChainElement; virStorageSourceIsBlockLocal; virStorageSourceIsEmpty; virStorageSourceIsLocalStorage; +virStorageSourceIsRelative; virStorageSourceNewFromBacking; virStorageSourceNewFromBackingAbsolute; virStorageSourceParseRBDColonString; diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index 0bf185644..1a464337e 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -16665,6 +16665,12 @@ qemuDomainBlockCopyCommon(virDomainObjPtr vm, priv = vm->privateData; cfg = virQEMUDriverGetConfig(driver); + if (virStorageSourceIsRelative(mirror)) { + virReportError(VIR_ERR_INVALID_ARG, "%s", + _("absolute path must be used as block copy target")); + goto cleanup; + } + if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0) goto cleanup; diff --git a/src/util/virstoragefile.c b/src/util/virstoragefile.c index 9ec005d50..ce6d21388 100644 --- a/src/util/virstoragefile.c +++ b/src/util/virstoragefile.c @@ -3672,3 +3672,34 @@ virStorageFileCheckCompat(const char *compat) virStringListFree(version); return ret; } + + +/** + * virStorageSourceIsRelative: + * @src: storage source to check + * + * Returns true if given storage source definition is a relative path. + */ +bool +virStorageSourceIsRelative(virStorageSourcePtr src) +{ + virStorageType actual_type = virStorageSourceGetActualType(src); + + if (!src->path) + return false; + + switch (actual_type) { + case VIR_STORAGE_TYPE_FILE: + case VIR_STORAGE_TYPE_BLOCK: + case VIR_STORAGE_TYPE_DIR: + return src->path[0] != '/'; + + case VIR_STORAGE_TYPE_NETWORK: + case VIR_STORAGE_TYPE_VOLUME: + case VIR_STORAGE_TYPE_NONE: + case VIR_STORAGE_TYPE_LAST: + return false; + } + + return false; +} diff --git a/src/util/virstoragefile.h b/src/util/virstoragefile.h index 6d1aac78d..1f62244db 100644 --- a/src/util/virstoragefile.h +++ b/src/util/virstoragefile.h @@ -388,4 +388,6 @@ int virStorageFileCheckCompat(const char *compat); virStorageSourcePtr virStorageSourceNewFromBackingAbsolute(const char *path); +bool virStorageSourceIsRelative(virStorageSourcePtr src); + #endif /* __VIR_STORAGE_FILE_H__ */ -- 2.11.0

2 1

[libvirt] [PATCH v2 0/5] network: Add support for local PTR domains
by Jiri Denemark 17 Dec '16

17 Dec '16

I run a system dnsmasq to be able to forward specific DNS requests to specific servers. And I have it configured for both forward and reverse lookups. Another dnsmasq is started for a virtual network with domain "virt". The system dnsmasq knows it needs to forward any requests for the "virt" domain and corresponding PTR domain to the dnsmasq started by libvirt. The problem is dnsmasq forwards queries for unknown names to the upstream name server (which is the system instance in my case). One can get nice endless loops of DNS requests pretty easily. Forward loops can be avoided by specifying localOnly='yes', but there was no way to avoid reverse lookup loops. And this is what I'm trying to address in the following patches. Version 2: - RNG schema changes and tests Jiri Denemark (5): tests: Check more network XMLs for schema compliance schema: Let elements in /network/ip be specified in any order conf: Make virNetworkIPDefParseXML a little bit saner util: Introduce virSocketAddrPTRDomain network: Add support for local PTR domains docs/formatnetwork.html.in | 37 ++++++-- docs/schemas/basictypes.rng | 6 ++ docs/schemas/network.rng | 92 ++++++++++++-------- src/conf/network_conf.c | 108 +++++++++++++++++++----- src/conf/network_conf.h | 4 + src/libvirt_private.syms | 1 + src/network/bridge_driver.c | 47 +++++++++++ src/util/virsocketaddr.c | 85 +++++++++++++++++++ src/util/virsocketaddr.h | 9 ++ tests/networkxml2confdata/dhcp6-nat-network.xml | 2 +- tests/networkxml2confdata/netboot-network.xml | 2 +- tests/networkxml2confdata/ptr-domains-auto.conf | 20 +++++ tests/networkxml2confdata/ptr-domains-auto.xml | 21 +++++ tests/networkxml2confdata/ptr-domains.conf | 24 ++++++ tests/networkxml2confdata/ptr-domains.xml | 24 ++++++ tests/networkxml2conftest.c | 2 + tests/virschematest.c | 2 +- 17 files changed, 418 insertions(+), 68 deletions(-) create mode 100644 tests/networkxml2confdata/ptr-domains-auto.conf create mode 100644 tests/networkxml2confdata/ptr-domains-auto.xml create mode 100644 tests/networkxml2confdata/ptr-domains.conf create mode 100644 tests/networkxml2confdata/ptr-domains.xml -- 2.11.0

2 12

[libvirt] [PATCH v2 00/11] Qemu: s390: Cpu Model Support
by Jason J. Herne 17 Dec '16

17 Dec '16

This patch set enables cpu model support for s390. The user can now set exact cpu models, query supported models via virsh domcapabilities, and use host-model and host-passthrough modes. The end result is that migration is safer because Qemu will perform runnability checking on the destination host and quit with an error if the guest's cpu model is not supported. Note: Some test data has been separated from corresponding test case updates for ease of review. Changelog --------- [v2] * Added s390x cpu and capabilities tests * Added cpu feature syntax tests * Dropped patch: Warn when migrating host-passthrough * Added patch: Document migrating host-passthrough is dangerous s390: Cpu driver support for update and compare - Compare: Added comment explaining why s390 bypasses the cpuCompare operation - Update: Added error message explaining minimum match mode is not supported - Update: Ensure user is not using unsupported optional feature policy - Update: Use virCPUDefUpdateFeature to update/create user requested features - Other minor fixes s390-cpu: Remove nodeData and decode - Completely remove nodeData and decode functions qemu: qmp query-cpu-model-expansion command - Cleaned up debug print - Restructured qemuMonitorJSONGetCPUModelExpansion - Added more JSON parsing error handling - CPU model features now parsed via an iterator - qemuMonitorJSONGetCPUModelExpansion: Fixed double free of model ptr - Restructure qemuMonitorCPUModelInfoFree - Other minor fixes qemu-caps: Get host model directly from Qemu when available - virQEMUCapsProbeQMPHostCPU: indentation fix - Fixed rebase error involving a missing 'goto cleanup;'. - Fix indentation in virQEMUCapsProbeQMPHostCPU - virQEMUCapsInitHostCPUModel now routes to virQEMUCapsCopyModelFromQEMU or virQEMUCapsCopyModelFromHost, depending on architecture. - Restructure hostCpu data in qemu caps cache xml - Other minor fixes Collin L. Walling (6): qemu: qmp query-cpu-model-expansion command qemu-caps: Get host model directly from Qemu when available qemu: command: Support new cpu feature argument syntax test-data: Qemu caps replies and xml for s390x qemu 2.7 and 2.8 tests: qemu capabilites: qemu 2.7 and 2.8 on s390x tests: domain capabilities: qemu 2.8 on s390x Jason J. Herne (5): s390: Cpu driver support for update and compare s390-cpu: Remove nodeData and decode docs: document cpu host-passthrough migration issue tests: qemuxml2argv s390x cpu model tests: qemuxml2argv cpu feature syntax docs/formatdomain.html.in | 6 +- po/POTFILES.in | 1 + src/cpu/cpu_s390.c | 103 +- src/qemu/qemu_capabilities.c | 180 +- src/qemu/qemu_capabilities.h | 1 + src/qemu/qemu_command.c | 10 +- src/qemu/qemu_monitor.c | 62 + src/qemu/qemu_monitor.h | 22 + src/qemu/qemu_monitor_json.c | 121 + src/qemu/qemu_monitor_json.h | 12 + tests/domaincapsschemadata/qemu_2.8.0.s390x.xml | 159 + tests/domaincapstest.c | 14 + .../qemucapabilitiesdata/caps_2.7.0.s390x.replies | 11999 +++++++++++++++++ tests/qemucapabilitiesdata/caps_2.7.0.s390x.xml | 140 + .../qemucapabilitiesdata/caps_2.8.0.s390x.replies | 13380 +++++++++++++++++++ tests/qemucapabilitiesdata/caps_2.8.0.s390x.xml | 286 + tests/qemucapabilitiestest.c | 4 + .../qemuxml2argv-cpu-features-post-qcme.args | 19 + .../qemuxml2argv-cpu-features-post-qcme.xml | 23 + .../qemuxml2argv-cpu-features-pre-qcme.args | 19 + .../qemuxml2argv-cpu-features-pre-qcme.xml | 23 + .../qemuxml2argv-cpu-s390-zEC12.args | 19 + .../qemuxml2argv-cpu-s390-zEC12.xml | 21 + tests/qemuxml2argvtest.c | 19 + tests/testutilsqemu.c | 39 +- tests/testutilsqemu.h | 1 + 26 files changed, 26642 insertions(+), 41 deletions(-) create mode 100644 tests/domaincapsschemadata/qemu_2.8.0.s390x.xml create mode 100644 tests/qemucapabilitiesdata/caps_2.7.0.s390x.replies create mode 100644 tests/qemucapabilitiesdata/caps_2.7.0.s390x.xml create mode 100644 tests/qemucapabilitiesdata/caps_2.8.0.s390x.replies create mode 100644 tests/qemucapabilitiesdata/caps_2.8.0.s390x.xml create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-cpu-features-post-qcme.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-cpu-features-post-qcme.xml create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-cpu-features-pre-qcme.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-cpu-features-pre-qcme.xml create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-cpu-s390-zEC12.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-cpu-s390-zEC12.xml -- 2.7.4

3 29

[libvirt] [libvirt-perl PATCH] Add more PERF_ constants
by John Ferlan 17 Dec '16

17 Dec '16

Signed-off-by: John Ferlan <jferlan(a)redhat.com> --- Changes | 4 ++++ Virt.xs | 4 ++++ lib/Sys/Virt/Domain.pm | 26 ++++++++++++++++++++++++++ 3 files changed, 34 insertions(+) diff --git a/Changes b/Changes index ffb1911..48ac221 100644 --- a/Changes +++ b/Changes @@ -5,6 +5,10 @@ Revision history for perl module Sys::Virt - Add group_name for block iotune - Add new branch instructions perf event - Add PERF_PARAM_BRANCH_MISSES constant + - Add PERF_PARAM_BUS_CYCLES constant + - Add PERF_PARAM_STALLED_CYCLES_FRONTEND constant + - Add PERF_PARAM_STALLED_CYCLES_BACKEND constant + - Add PERF_PARAM_REF_CPU_CYCLES constant 2.5.0 2016-12-05 diff --git a/Virt.xs b/Virt.xs index 65f4975..d694eff 100644 --- a/Virt.xs +++ b/Virt.xs @@ -8303,6 +8303,10 @@ BOOT: REGISTER_CONSTANT_STR(VIR_PERF_PARAM_INSTRUCTIONS, PERF_PARAM_INSTRUCTIONS); REGISTER_CONSTANT_STR(VIR_PERF_PARAM_BRANCH_INSTRUCTIONS, PERF_PARAM_BRANCH_INSTRUCTIONS); REGISTER_CONSTANT_STR(VIR_PERF_PARAM_BRANCH_MISSES, PERF_PARAM_BRANCH_MISSES); + REGISTER_CONSTANT_STR(VIR_PERF_PARAM_BUS_CYCLES, PERF_PARAM_BUS_CYCLES); + REGISTER_CONSTANT_STR(VIR_PERF_PARAM_STALLED_CYCLES_FRONTEND, PERF_PARAM_STALLED_CYCLES_FRONTEND); + REGISTER_CONSTANT_STR(VIR_PERF_PARAM_STALLED_CYCLES_BACKEND, PERF_PARAM_STALLED_CYCLES_BACKEND); + REGISTER_CONSTANT_STR(VIR_PERF_PARAM_REF_CPU_CYCLES, PERF_PARAM_REF_CPU_CYCLES); REGISTER_CONSTANT_STR(VIR_DOMAIN_BANDWIDTH_IN_AVERAGE, BANDWIDTH_IN_AVERAGE); REGISTER_CONSTANT_STR(VIR_DOMAIN_BANDWIDTH_IN_PEAK, BANDWIDTH_IN_PEAK); diff --git a/lib/Sys/Virt/Domain.pm b/lib/Sys/Virt/Domain.pm index 3d9b106..bd59139 100644 --- a/lib/Sys/Virt/Domain.pm +++ b/lib/Sys/Virt/Domain.pm @@ -2783,6 +2783,32 @@ count of branch misses by applications running on the platform. It corresponds to the "perf.branch_misses" field in the *Stats APIs. +=item Sys::Virt::Domain::PERF_PARAM_BUS_CYCLES +The bus_cycles perf event counter which can be used to measure +the count of bus cycles by applications running on the platform. +It corresponds to the "perf.bus_cycles" field in the *Stats APIs. + +=item Sys::Virt::Domain::PERF_PARAM_STALLED_CYCLES_FRONTEND +The stalled_cycles_frontend perf event counter which can be used +to measure the count of stalled cpu cycles in the frontend of the +instruction processor pipeline by applications running on the +platform. It corresponds to the "perf.stalled_cycles_frontend" +field in the *Stats APIs. + +=item Sys::Virt::Domain::PERF_PARAM_STALLED_CYCLES_BACKEND +The stalled_cycles_backend perf event counter which can be used +to measure the count of stalled cpu cycles in the backend of the +instruction processor pipeline by application running on the +platform. It corresponds to the "perf.stalled_cycles_backend" +field in the *Stats APIs. + +=item Sys::Virt::Domain::PERF_PARAM_REF_CPU_CYCLES +The ref_cpu_cycles perf event counter which can be used to +measure the count of total cpu cycles not affected by CPU +frequency scaling by applications running on the platform. +It corresponds to the "perf.ref_cpu_cycles" field in the +*Stats APIs. + =back =head2 VCPU FLAGS -- 2.7.4

2 1

[libvirt] [RFC] qmp: query-device-slots command
by Eduardo Habkost 17 Dec '16

17 Dec '16

This adds a new command to QMP: query-device-slots. It will allow management software to query possible slots where devices can be plugged. This implementation of the command will return: * Multiple PCI slots per bus, in the case of PCI buses; * One slot per bus in the case of the other buses; * One slot for each entry from query-hotpluggable-cpus. In the example below, I am not sure if the PCIe ports are all supposed to report all slots, but I didn't find any existing field in PCIBus that would help me figure out the actual number of slots in a given PCI bus. Git tree -------- This patch needs the previous query-machines series I am working on. The full tree can be found on the git tree at: git://github.com/ehabkost/qemu-hacks.git work/query-machines-bus-info Example output -------------- The following output was returned by QEMU when running it as: $ qemu-system-x86_64 -machine q35 \ -readconfig docs/q35-chipset.cfg \ -smp 4,maxcpus=8,sockets=2,cores=2,threads=2 { "return": [ { "available": false, "devices": [ "/machine/unattached/device[30]", "/machine/unattached/device[29]", "/machine/unattached/device[28]", "/machine/unattached/device[27]", "/machine/unattached/device[26]", "/machine/unattached/device[25]", "/machine/unattached/device[24]", "/machine/unattached/device[23]" ], "accepted-device-types": [ "i2c-slave" ], "props": { "bus": "/machine/unattached/device[22]/i2c" }, "hotpluggable": false, "type": "generic" }, { "available": false, "devices": [], "accepted-device-types": [ "ide-device" ], "props": { "bus": "/machine/unattached/device[20]/ide.4" }, "hotpluggable": false, "type": "generic" }, { "available": false, "devices": [], "accepted-device-types": [ "ide-device" ], "props": { "bus": "/machine/unattached/device[20]/ide.5" }, "hotpluggable": false, "type": "generic" }, { "available": false, "devices": [], "accepted-device-types": [ "ide-device" ], "props": { "bus": "/machine/unattached/device[20]/ide.0" }, "hotpluggable": false, "type": "generic" }, { "available": false, "devices": [], "accepted-device-types": [ "ide-device" ], "props": { "bus": "/machine/unattached/device[20]/ide.1" }, "hotpluggable": false, "type": "generic" }, { "available": false, "devices": [ "/machine/unattached/device[21]" ], "accepted-device-types": [ "ide-device" ], "props": { "bus": "/machine/unattached/device[20]/ide.2" }, "hotpluggable": false, "type": "generic" }, { "available": false, "devices": [], "accepted-device-types": [ "ide-device" ], "props": { "bus": "/machine/unattached/device[20]/ide.3" }, "hotpluggable": false, "type": "generic" }, { "available": false, "devices": [ "/machine/unattached/device[8]", "/machine/q35/ioapic", "/machine/q35", "/machine/fw_cfg", "/machine/unattached/device[1]" ], "accepted-device-types": [ "sys-bus-device" ], "props": { "bus": "/machine/unattached/sysbus" }, "hotpluggable": false, "type": "generic" }, { "available": false, "devices": [ "/machine/unattached/device[19]", "/machine/unattached/device[18]", "/machine/unattached/device[17]", "/machine/unattached/device[16]", "/machine/unattached/device[15]", "/machine/unattached/device[14]", "/machine/unattached/device[13]", "/machine/unattached/device[12]", "/machine/unattached/device[11]", "/machine/unattached/device[10]", "/machine/unattached/device[9]", "/machine/unattached/device[7]", "/machine/unattached/device[6]" ], "accepted-device-types": [ "isa-device" ], "props": { "bus": "/machine/unattached/device[5]/isa.0" }, "hotpluggable": false, "type": "generic" }, { "available": false, "devices": [ "/machine/q35/mch" ], "accepted-device-types": [ "legacy-pci-device", "pci-express-device" ], "props": { 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"/machine/peripheral/ich9-pci-bridge/ich9-pci-bridge", "addr": 16 }, "hotpluggable": false, "type": "pci", "max-devices": 1 }, { "available": false, "devices": [], "accepted-device-types": [ "legacy-pci-device" ], "props": { "bus": "/machine/peripheral/ich9-pci-bridge/ich9-pci-bridge", "addr": 24 }, "hotpluggable": false, "type": "pci", "max-devices": 1 }, { "available": false, "devices": [], "accepted-device-types": [ "legacy-pci-device" ], "props": { "bus": "/machine/peripheral/ich9-pci-bridge/ich9-pci-bridge", "addr": 32 }, "hotpluggable": false, "type": "pci", "max-devices": 1 }, { "available": false, "devices": [], "accepted-device-types": [ "legacy-pci-device" ], "props": { "bus": "/machine/peripheral/ich9-pci-bridge/ich9-pci-bridge", "addr": 40 }, "hotpluggable": false, "type": "pci", "max-devices": 1 }, { "available": false, "devices": [], "accepted-device-types": [ "legacy-pci-device" ], "props": { "bus": "/machine/peripheral/ich9-pci-bridge/ich9-pci-bridge", "addr": 48 }, "hotpluggable": false, "type": "pci", "max-devices": 1 }, { "available": false, "devices": [], "accepted-device-types": [ "legacy-pci-device" ], "props": { "bus": "/machine/peripheral/ich9-pci-bridge/ich9-pci-bridge", "addr": 56 }, "hotpluggable": false, "type": "pci", "max-devices": 1 }, { "available": false, "devices": [], "accepted-device-types": [ "legacy-pci-device" ], "props": { "bus": "/machine/peripheral/ich9-pci-bridge/ich9-pci-bridge", "addr": 64 }, "hotpluggable": false, "type": "pci", "max-devices": 1 }, { "available": false, "devices": [], "accepted-device-types": [ "legacy-pci-device" ], "props": { "bus": "/machine/peripheral/ich9-pci-bridge/ich9-pci-bridge", "addr": 72 }, "hotpluggable": false, "type": "pci", "max-devices": 1 }, { "available": false, "devices": [], "accepted-device-types": [ "legacy-pci-device" ], "props": { "bus": "/machine/peripheral/ich9-pci-bridge/ich9-pci-bridge", "addr": 80 }, "hotpluggable": false, "type": "pci", "max-devices": 1 }, { "available": false, "devices": [], "accepted-device-types": [ "legacy-pci-device" ], "props": { "bus": "/machine/peripheral/ich9-pci-bridge/ich9-pci-bridge", "addr": 88 }, "hotpluggable": false, "type": "pci", "max-devices": 1 }, { "available": false, "devices": [], "accepted-device-types": [ "legacy-pci-device" ], "props": { "bus": "/machine/peripheral/ich9-pci-bridge/ich9-pci-bridge", "addr": 96 }, "hotpluggable": false, "type": "pci", "max-devices": 1 }, { "available": false, "devices": [], "accepted-device-types": [ "legacy-pci-device" ], "props": { "bus": "/machine/peripheral/ich9-pci-bridge/ich9-pci-bridge", "addr": 104 }, "hotpluggable": false, "type": "pci", "max-devices": 1 }, { "available": false, "devices": [], "accepted-device-types": [ "legacy-pci-device" ], "props": { "bus": "/machine/peripheral/ich9-pci-bridge/ich9-pci-bridge", "addr": 112 }, "hotpluggable": false, "type": "pci", "max-devices": 1 }, { "available": false, "devices": [], "accepted-device-types": [ "legacy-pci-device" ], "props": { "bus": "/machine/peripheral/ich9-pci-bridge/ich9-pci-bridge", "addr": 120 }, "hotpluggable": false, "type": "pci", "max-devices": 1 }, { "available": false, "devices": [], "accepted-device-types": [ "legacy-pci-device" ], "props": { "bus": "/machine/peripheral/ich9-pci-bridge/ich9-pci-bridge", "addr": 128 }, "hotpluggable": false, "type": "pci", "max-devices": 1 }, { "available": false, "devices": [], "accepted-device-types": [ "legacy-pci-device" ], "props": { "bus": "/machine/peripheral/ich9-pci-bridge/ich9-pci-bridge", "addr": 136 }, "hotpluggable": false, "type": "pci", "max-devices": 1 }, { "available": false, "devices": [], "accepted-device-types": [ "legacy-pci-device" ], "props": { "bus": "/machine/peripheral/ich9-pci-bridge/ich9-pci-bridge", "addr": 144 }, "hotpluggable": false, "type": "pci", "max-devices": 1 }, { "available": false, "devices": [], "accepted-device-types": [ "legacy-pci-device" ], "props": { "bus": "/machine/peripheral/ich9-pci-bridge/ich9-pci-bridge", "addr": 152 }, "hotpluggable": false, "type": "pci", "max-devices": 1 }, { "available": false, "devices": [], "accepted-device-types": [ "legacy-pci-device" ], "props": { "bus": "/machine/peripheral/ich9-pci-bridge/ich9-pci-bridge", "addr": 160 }, "hotpluggable": false, "type": "pci", "max-devices": 1 }, { "available": false, "devices": [], "accepted-device-types": [ "legacy-pci-device" ], "props": { "bus": "/machine/peripheral/ich9-pci-bridge/ich9-pci-bridge", "addr": 168 }, "hotpluggable": false, "type": "pci", "max-devices": 1 }, { "available": false, "devices": [], "accepted-device-types": [ "legacy-pci-device" ], "props": { "bus": "/machine/peripheral/ich9-pci-bridge/ich9-pci-bridge", "addr": 176 }, "hotpluggable": false, "type": "pci", "max-devices": 1 }, { "available": false, "devices": [], "accepted-device-types": [ "legacy-pci-device" ], "props": { "bus": "/machine/peripheral/ich9-pci-bridge/ich9-pci-bridge", "addr": 184 }, "hotpluggable": false, "type": "pci", "max-devices": 1 }, { "available": false, "devices": [], "accepted-device-types": [ "legacy-pci-device" ], "props": { "bus": "/machine/peripheral/ich9-pci-bridge/ich9-pci-bridge", "addr": 192 }, "hotpluggable": false, "type": "pci", "max-devices": 1 }, { "available": false, "devices": [], "accepted-device-types": [ "legacy-pci-device" ], "props": { "bus": "/machine/peripheral/ich9-pci-bridge/ich9-pci-bridge", "addr": 200 }, "hotpluggable": false, "type": "pci", "max-devices": 1 }, { "available": false, "devices": [], "accepted-device-types": [ "legacy-pci-device" ], "props": { "bus": "/machine/peripheral/ich9-pci-bridge/ich9-pci-bridge", "addr": 208 }, "hotpluggable": false, "type": "pci", "max-devices": 1 }, { "available": false, "devices": [], "accepted-device-types": [ "legacy-pci-device" ], "props": { "bus": "/machine/peripheral/ich9-pci-bridge/ich9-pci-bridge", "addr": 216 }, "hotpluggable": false, "type": "pci", "max-devices": 1 }, { "available": false, "devices": [], "accepted-device-types": [ "legacy-pci-device" ], "props": { "bus": "/machine/peripheral/ich9-pci-bridge/ich9-pci-bridge", "addr": 224 }, "hotpluggable": false, "type": "pci", "max-devices": 1 }, { "available": false, "devices": [], "accepted-device-types": [ "legacy-pci-device" ], "props": { "bus": "/machine/peripheral/ich9-pci-bridge/ich9-pci-bridge", "addr": 232 }, "hotpluggable": false, "type": "pci", "max-devices": 1 }, { "available": false, "devices": [], "accepted-device-types": [ "legacy-pci-device" ], "props": { "bus": "/machine/peripheral/ich9-pci-bridge/ich9-pci-bridge", "addr": 240 }, "hotpluggable": false, "type": "pci", "max-devices": 1 }, { "available": false, "devices": [], "accepted-device-types": [ "legacy-pci-device" ], "props": { "bus": "/machine/peripheral/ich9-pci-bridge/ich9-pci-bridge", "addr": 248 }, "hotpluggable": false, "type": "pci", "max-devices": 1 }, { "available": true, "devices": [], "accepted-device-types": [ "usb-device" ], "props": { "bus": "/machine/peripheral/ich9-ehci-1/ich9-ehci-1.0" }, "hotpluggable": true, "type": "generic" }, { "available": true, "devices": [], "accepted-device-types": [ "usb-device" ], "props": { "bus": "/machine/peripheral/ich9-ehci-2/ich9-ehci-2.0" }, "hotpluggable": true, "type": "generic" }, { "available": false, "devices": [], "accepted-device-types": [ "hda-codec" ], "props": { "bus": "/machine/peripheral/ich9-hda-audio/ich9-hda-audio.0" }, "hotpluggable": false, "type": "generic" }, { "available": true, "devices": [], "accepted-device-types": [ "qemu64-x86_64-cpu" ], "props": { "socket-id": 1, "core-id": 1, "thread-id": 1 }, "hotpluggable": true, "type": "cpu", "max-devices": 1 }, { "available": true, "devices": [], "accepted-device-types": [ "qemu64-x86_64-cpu" ], "props": { "socket-id": 1, "core-id": 1, "thread-id": 0 }, "hotpluggable": true, "type": "cpu", "max-devices": 1 }, { "available": true, "devices": [], "accepted-device-types": [ "qemu64-x86_64-cpu" ], "props": { "socket-id": 1, "core-id": 0, "thread-id": 1 }, "hotpluggable": true, "type": "cpu", "max-devices": 1 }, { "available": true, "devices": [], "accepted-device-types": [ "qemu64-x86_64-cpu" ], "props": { "socket-id": 1, "core-id": 0, "thread-id": 0 }, "hotpluggable": true, "type": "cpu", "max-devices": 1 }, { "available": false, "devices": [ "/machine/unattached/device[4]" ], "accepted-device-types": [ "qemu64-x86_64-cpu" ], "props": { "socket-id": 0, "core-id": 1, "thread-id": 1 }, "hotpluggable": true, "type": "cpu", "max-devices": 1 }, { "available": false, "devices": [ "/machine/unattached/device[3]" ], "accepted-device-types": [ "qemu64-x86_64-cpu" ], "props": { "socket-id": 0, "core-id": 1, "thread-id": 0 }, "hotpluggable": true, "type": "cpu", "max-devices": 1 }, { "available": false, "devices": [ "/machine/unattached/device[2]" ], "accepted-device-types": [ "qemu64-x86_64-cpu" ], "props": { "socket-id": 0, "core-id": 0, "thread-id": 1 }, "hotpluggable": true, "type": "cpu", "max-devices": 1 }, { "available": false, "devices": [ "/machine/unattached/device[0]" ], "accepted-device-types": [ "qemu64-x86_64-cpu" ], "props": { "socket-id": 0, "core-id": 0, "thread-id": 0 }, "hotpluggable": true, "type": "cpu", "max-devices": 1 } ] } Signed-off-by: Eduardo Habkost <ehabkost(a)redhat.com> --- qapi-schema.json | 114 +++++++++++++++++++++++++++++++++++++++++++++++++ include/hw/qdev-core.h | 6 +++ hw/core/bus.c | 49 +++++++++++++++++++++ hw/pci/pci.c | 106 +++++++++++++++++++++++++++++++++------------ qdev-monitor.c | 86 ++++++++++++++++++++++++++++++++++--- 5 files changed, 328 insertions(+), 33 deletions(-) diff --git a/qapi-schema.json b/qapi-schema.json index d48ff3f..484d91e 100644 --- a/qapi-schema.json +++ b/qapi-schema.json @@ -3166,6 +3166,120 @@ { 'command': 'closefd', 'data': {'fdname': 'str'} } ## +# @DeviceSlotType: +# +# Type of device slot +# +# @generic: Generic device slot, with no bus-specific information +# @pci: PCI device slot +# @cpu: CPU device slot +## +{ 'enum': 'DeviceSlotType', + 'data': ['generic', 'pci', 'cpu'] } + +## +# @DeviceSlotInfo: +# +# Information on a slot where devices can be plugged. Some buses +# are represented as a single slot that can support multiple devices, +# and some buses have multiple slots that are identified by arguments +# to @device_add. +# +# @bus: ID of the bus object where the device can be plugged. Optional, +# as some devices don't need a bus to be plugged (e.g. CPUs). +# Can be copied to the "bus" argument to @device_add. +# +# @type: type of device slot. +# +# @accepted-device-types: List of device types accepted by the slot. +# Any device plugged to the slot should implement +# one of the accepted device types. +# +# @max-devices: #optional maximum number of devices that can be plugged +# to the slot. +# +# @devices: List of QOM paths for devices that are already plugged. +# +# @available: If false, the slot is not available for plugging any device. +# This value can change at runtime if condition changes +# (e.g. if the device becomes full, or if the machine +# was already initialized and the slot doesn't support +# hotplug). +# +# @hotpluggable: If true, the slot accepts hotplugged devices. +# +# DeviceSlotInfo structs always have a @props member, whose members +# can be directly copied to the arguments to @device_add. +## +{ 'union': 'DeviceSlotInfo', + 'base': { 'type': 'DeviceSlotType', + 'accepted-device-types': [ 'str' ], + '*max-devices': 'int', 'devices': [ 'str' ], + 'available': 'bool', 'hotpluggable': 'bool' }, + 'discriminator': 'type', + 'data': { 'generic': 'GenericSlotInfo', + 'pci': 'PCISlotInfo', + 'cpu': 'CPUSlotInfo' } } + +## +# @GenericSlotProperties: +## +{ 'struct': 'GenericSlotProperties', + 'data': { 'bus': 'str' } } + + +## +# @GenericSlotInfo: +# +# Generic slot information, with no bus-specific information +## +{ 'struct': 'GenericSlotInfo', + 'data': { 'props': 'GenericSlotProperties' } } + +## +# @PCIDeviceSlotProperties: +# +# Properties that can be set when plugging a PCI device. +# +# @addr: "addr" argument to @device_add. +# +#FIXME: replace @addr with slot and function properties. +## +{ 'struct': 'PCIDeviceSlotProperties', + 'data': { 'bus': 'str', 'addr': 'int' } } + +## +# @PCISlotInfo: +# +# Information on a PCI device slot. +# +# @props: The @device_add arguments that can be used when plugging +# the device. +## +{ 'struct': 'PCISlotInfo', + 'data': { 'props': 'PCIDeviceSlotProperties' } } + +## +# @CPUSlotInfo: +# +# Information on a CPU device slot. +# +# @props: The @device_add arguments that can be used when plugging +# the device. +## +{ 'struct': 'CPUSlotInfo', + 'data': { 'props': 'CpuInstanceProperties' } } + +## +# @query-device-slots: +# +# Return the list of possible slots for plugging devices using +# @device_add. +## +{ 'command': 'query-device-slots', + 'returns': [ 'DeviceSlotInfo' ] } + +## # @MachineBusInfo # # Information about a bus present on a machine. diff --git a/include/hw/qdev-core.h b/include/hw/qdev-core.h index a7f9ac4..7a87234 100644 --- a/include/hw/qdev-core.h +++ b/include/hw/qdev-core.h @@ -214,6 +214,10 @@ struct BusClass { * but on some cases bus instances may override it. */ const char *device_type; + + /*TOD: write doc */ + DeviceSlotInfoList *(*enumerate_slots)(BusState *bus, Error **errp); + }; typedef struct BusChild { @@ -412,4 +416,6 @@ static inline bool qbus_is_hotpluggable(BusState *bus) void device_listener_register(DeviceListener *listener); void device_listener_unregister(DeviceListener *listener); +bool qbus_is_full(BusState *bus); + #endif diff --git a/hw/core/bus.c b/hw/core/bus.c index d2bf717..58b5c3d 100644 --- a/hw/core/bus.c +++ b/hw/core/bus.c @@ -21,6 +21,7 @@ #include "qemu-common.h" #include "hw/qdev.h" #include "qapi/error.h" +#include "qapi/clone-visitor.h" #include "qapi-visit.h" static void qbus_set_hotplug_handler_internal(BusState *bus, Object *handler, @@ -225,12 +226,60 @@ static void bus_get_device_type(Object *obj, Visitor *v, visit_type_strList(v, NULL, &bus->accepted_device_types, errp); } +bool qbus_is_full(BusState *bus) +{ + BusClass *bus_class = BUS_GET_CLASS(bus); + return bus_class->max_dev && bus->max_index >= bus_class->max_dev; +} + +/* Generic slot enumeration function: will return a single slot + * for the bus, with max_devices set to BusClass::max_dev, if set. + */ +static DeviceSlotInfoList *bus_generic_enumerate_slots(BusState *bus, Error **errp) +{ + Error *local_err = NULL; + BusClass *bc = BUS_GET_CLASS(bus); + strList **devlist; + BusChild *kid; + DeviceSlotInfoList *r = g_new0(DeviceSlotInfoList, 1); + + r->value = g_new0(DeviceSlotInfo, 1); + r->value->type = DEVICE_SLOT_TYPE_GENERIC; + r->value->has_max_devices = bc->max_dev > 0; + r->value->max_devices = bc->max_dev; + r->value->accepted_device_types = QAPI_CLONE(strList, bus->accepted_device_types); + r->value->u.generic.props = g_new0(GenericSlotProperties, 1); + r->value->u.generic.props->bus = object_get_canonical_path(OBJECT(bus)); + + devlist = &r->value->devices; + QTAILQ_FOREACH(kid, &bus->children, sibling) { + DeviceState *dev = kid->child; + strList *item = g_new0(strList, 1); + item->value = object_get_canonical_path(OBJECT(dev)); + *devlist = item; + devlist = &item->next; + } + r->value->hotpluggable = qbus_is_hotpluggable(bus); + + /* Conditions that make a bus unavailable: + * - Bus already full + * - Hotplug when the bus is not hotpluggable + */ + r->value->available = + !(qbus_is_full(bus) || + (qdev_hotplug && !qbus_is_hotpluggable(bus))); + + error_propagate(errp, local_err); + return r; +} + static void bus_class_init(ObjectClass *class, void *data) { BusClass *bc = BUS_CLASS(class); class->unparent = bus_unparent; bc->get_fw_dev_path = default_bus_get_fw_dev_path; + bc->enumerate_slots = bus_generic_enumerate_slots; object_class_property_add(class, "accepted-device-types", "strList", bus_get_device_type, NULL, NULL, NULL, diff --git a/hw/pci/pci.c b/hw/pci/pci.c index 2eac71a..9bcc116 100644 --- a/hw/pci/pci.c +++ b/hw/pci/pci.c @@ -41,6 +41,7 @@ #include "hw/hotplug.h" #include "hw/boards.h" #include "qemu/cutils.h" +#include "qapi/clone-visitor.h" //#define DEBUG_PCI #ifdef DEBUG_PCI @@ -141,6 +142,8 @@ static uint16_t pcibus_numa_node(PCIBus *bus) return NUMA_NODE_UNASSIGNED; } +static DeviceSlotInfoList *pci_bus_enumerate_slots(BusState *bus, Error **errp); + static void pci_bus_class_init(ObjectClass *klass, void *data) { BusClass *k = BUS_CLASS(klass); @@ -156,6 +159,7 @@ static void pci_bus_class_init(ObjectClass *klass, void *data) * but overrides BusClass::device_type to INTERFACE_PCIE_DEVICE */ k->device_type = INTERFACE_LEGACY_PCI_DEVICE; + k->enumerate_slots = pci_bus_enumerate_slots; pbc->is_root = pcibus_is_root; pbc->bus_num = pcibus_num; @@ -967,6 +971,81 @@ uint16_t pci_requester_id(PCIDevice *dev) return pci_req_id_cache_extract(&dev->requester_id_cache); } +static bool pci_bus_has_pcie_upstream_port(PCIBus *bus) +{ + PCIDevice *parent_dev = pci_bridge_get_device(bus); + + /* Device associated with an upstream port. + * As there are several types of these, it's easier to check the + * parent device: upstream ports are always connected to + * root or downstream ports. + */ + return parent_dev && + pci_is_express(parent_dev) && + parent_dev->exp.exp_cap && + (pcie_cap_get_type(parent_dev) == PCI_EXP_TYPE_ROOT_PORT || + pcie_cap_get_type(parent_dev) == PCI_EXP_TYPE_DOWNSTREAM); +} + +static PCIDevice *pci_bus_get_function_0(PCIBus *bus, int devfn) +{ + if(pci_bus_has_pcie_upstream_port(bus)) { + /* With an upstream PCIe port, we only support 1 device at slot 0 */ + return bus->devices[0]; + } else { + /* Other bus types might support multiple devices at slots 0-31 */ + return bus->devices[PCI_DEVFN(PCI_SLOT(devfn), 0)]; + } +} + +PCIDevice *pci_get_function_0(PCIDevice *pci_dev) +{ + return pci_bus_get_function_0(pci_dev->bus, pci_dev->devfn); +} + +static DeviceSlotInfoList *pci_bus_enumerate_slots(BusState *bus, Error **errp) +{ + PCIBus *pb = PCI_BUS(bus); + int devfn; + DeviceSlotInfoList *r = NULL; + DeviceSlotInfoList **next = &r; + + for(devfn = pb->devfn_min; devfn < ARRAY_SIZE(pb->devices); + devfn += PCI_FUNC_MAX) { + DeviceSlotInfoList *i = g_new0(DeviceSlotInfoList, 1); + i->value = g_new0(DeviceSlotInfo, 1); + i->value->type = DEVICE_SLOT_TYPE_PCI; + i->value->has_max_devices = true; + i->value->max_devices = 1; + i->value->u.pci.props = g_new0(PCIDeviceSlotProperties, 1); + i->value->u.pci.props->bus = object_get_canonical_path(OBJECT(bus)); + i->value->u.pci.props->addr = devfn; + /*TODO: add info about accepting only bridges on extra PCI root buses */ + i->value->accepted_device_types = QAPI_CLONE(strList, bus->accepted_device_types); + if (pb->devices[devfn]) { + i->value->devices = g_new0(strList, 1); + i->value->devices->value = + object_get_canonical_path(OBJECT(pb->devices[devfn])); + } + + i->value->hotpluggable = qbus_is_hotpluggable(bus); + /* Conditions that make a devfn unavailable: + * - Hotplug when function 0 is already occupied + * - devfn already occupied by a device + * - Hotplug when the bus is not hotpluggable + */ + i->value->available = + !((qdev_hotplug && pci_bus_get_function_0(pb, devfn)) || + (pb->devices[devfn]) || + (qdev_hotplug && !qbus_is_hotpluggable(bus))); + + *next = i; + next = &i->next; + } + + return r; +} + /* -1 for devfn means auto assign */ static PCIDevice *do_pci_register_device(PCIDevice *pci_dev, PCIBus *bus, const char *name, int devfn, @@ -2607,33 +2686,6 @@ void pci_bus_get_w64_range(PCIBus *bus, Range *range) pci_for_each_device_under_bus(bus, pci_dev_get_w64, range); } -static bool pcie_has_upstream_port(PCIDevice *dev) -{ - PCIDevice *parent_dev = pci_bridge_get_device(dev->bus); - - /* Device associated with an upstream port. - * As there are several types of these, it's easier to check the - * parent device: upstream ports are always connected to - * root or downstream ports. - */ - return parent_dev && - pci_is_express(parent_dev) && - parent_dev->exp.exp_cap && - (pcie_cap_get_type(parent_dev) == PCI_EXP_TYPE_ROOT_PORT || - pcie_cap_get_type(parent_dev) == PCI_EXP_TYPE_DOWNSTREAM); -} - -PCIDevice *pci_get_function_0(PCIDevice *pci_dev) -{ - if(pcie_has_upstream_port(pci_dev)) { - /* With an upstream PCIe port, we only support 1 device at slot 0 */ - return pci_dev->bus->devices[0]; - } else { - /* Other bus types might support multiple devices at slots 0-31 */ - return pci_dev->bus->devices[PCI_DEVFN(PCI_SLOT(pci_dev->devfn), 0)]; - } -} - MSIMessage pci_get_msi_message(PCIDevice *dev, int vector) { MSIMessage msg; diff --git a/qdev-monitor.c b/qdev-monitor.c index c73410c..b4071c4 100644 --- a/qdev-monitor.c +++ b/qdev-monitor.c @@ -29,6 +29,8 @@ #include "qemu/error-report.h" #include "qemu/help_option.h" #include "sysemu/block-backend.h" +#include "qapi/clone-visitor.h" +#include "hw/boards.h" /* * Aliases were a bad idea from the start. Let's keep them @@ -399,12 +401,6 @@ static DeviceState *qbus_find_dev(BusState *bus, char *elem) return NULL; } -static inline bool qbus_is_full(BusState *bus) -{ - BusClass *bus_class = BUS_GET_CLASS(bus); - return bus_class->max_dev && bus->max_index >= bus_class->max_dev; -} - /* * Search the tree rooted at @bus for a bus. * If @name, search for a bus with that name. Note that bus names @@ -631,6 +627,84 @@ DeviceState *qdev_device_add(QemuOpts *opts, Error **errp) return dev; } +typedef struct SlotListState { + DeviceSlotInfoList *result; + DeviceSlotInfoList **next; + Error *err; +} SlotListState; + +static int walk_bus(Object *obj, void *opaque) +{ + SlotListState *s = opaque; + if (object_dynamic_cast(obj, TYPE_BUS)) { + BusState *bus = BUS(obj); + BusClass *bc = BUS_GET_CLASS(bus); + DeviceSlotInfoList *l = bc->enumerate_slots(bus, &s->err); + *s->next = l; + for (; l; l = l->next) { + s->next = &l->next; + } + if (s->err) { + return 1; + } + } + return 0; +} + +DeviceSlotInfoList *qmp_query_device_slots(Error **errp) +{ + SlotListState s = { }; + MachineState *ms = MACHINE(qdev_get_machine()); + MachineClass *mc = MACHINE_GET_CLASS(ms); + + s.next = &s.result; + + /* We build the device slot list from two sources: + * 1) Calling the BusClass::enumerate_slots() method on all buses; + * 2) The return value of MachineClass::query_hotpluggable_cpus() + */ + + + object_child_foreach_recursive(qdev_get_machine(), walk_bus, &s); + if (s.err) { + goto out; + } + + if (mc->query_hotpluggable_cpus) { + HotpluggableCPUList *hcl = mc->query_hotpluggable_cpus(ms); + HotpluggableCPUList *i; + + for (i = hcl; i; i = i->next) { + DeviceSlotInfoList *r = g_new0(DeviceSlotInfoList, 1); + HotpluggableCPU *hc = i->value; + r->value = g_new0(DeviceSlotInfo, 1); + r->value->type = DEVICE_SLOT_TYPE_CPU; + r->value->accepted_device_types = g_new0(strList, 1); + r->value->accepted_device_types->value = g_strdup(hc->type); + r->value->has_max_devices = true; + r->value->max_devices = 1; + r->value->available = !hc->has_qom_path; + /*TODO: should it be always true? */ + r->value->hotpluggable = true; + + if (hc->has_qom_path) { + r->value->devices = g_new0(strList, 1); + r->value->devices->value = g_strdup(hc->qom_path); + } + r->value->u.cpu.props = QAPI_CLONE(CpuInstanceProperties, + hc->props); + *s.next = r; + s.next = & r->next; + } + + qapi_free_HotpluggableCPUList(hcl); + } + +out: + error_propagate(errp, s.err); + return s.result; +} + #define qdev_printf(fmt, ...) monitor_printf(mon, "%*s" fmt, indent, "", ## __VA_ARGS__) static void qbus_print(Monitor *mon, BusState *bus, int indent); -- 2.7.4 -- Eduardo

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[libvirt] [PATCH 0/2] Simplify perf events handling a little
by Daniel P. Berrange 16 Dec '16

16 Dec '16

This does two simplifications to the perf events code. Daniel P. Berrange (2): perf: get rid of pointless virPerfGetEventAttr() method perf: get rid of pointless virPerfGetEvent() method src/util/virperf.c | 162 +++++++++++++++++++++-------------------------------- 1 file changed, 65 insertions(+), 97 deletions(-) -- 2.9.3

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