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| author | Peter Xu <peterx@redhat.com> | 2019-09-16 16:07:16 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2019-09-16 06:57:24 -0400 |
| commit | d2321d31ff98b75b652c2b1594f00a4cfd48102a (patch) | |
| tree | 076d75ca1e63764fffb271f55eb9cde7f915e4d2 /include | |
| parent | 28cf553afeb29b0c4f339c600171552a72a68cb7 (diff) | |
| download | qemu-d2321d31ff98b75b652c2b1594f00a4cfd48102a.zip qemu-d2321d31ff98b75b652c2b1594f00a4cfd48102a.tar.gz qemu-d2321d31ff98b75b652c2b1594f00a4cfd48102a.tar.bz2 | |
qdev/machine: Introduce hotplug_allowed hook
Introduce this new per-machine hook to give any machine class a chance
to do a sanity check on the to-be-hotplugged device as a sanity test.
This will be used for x86 to try to detect some illegal configuration
of devices, e.g., possible conflictions between vfio-pci and x86
vIOMMU.
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20190916080718.3299-3-peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/hw/boards.h | 9 | ||||
| -rw-r--r-- | include/hw/qdev-core.h | 1 |
2 files changed, 10 insertions, 0 deletions
diff --git a/include/hw/boards.h b/include/hw/boards.h index 2289536..be18a5c 100644 --- a/include/hw/boards.h +++ b/include/hw/boards.h @@ -166,6 +166,13 @@ typedef struct { * The function pointer to hook different machine specific functions for * parsing "smp-opts" from QemuOpts to MachineState::CpuTopology and more * machine specific topology fields, such as smp_dies for PCMachine. + * @hotplug_allowed: + * If the hook is provided, then it'll be called for each device + * hotplug to check whether the device hotplug is allowed. Return + * true to grant allowance or false to reject the hotplug. When + * false is returned, an error must be set to show the reason of + * the rejection. If the hook is not provided, all hotplug will be + * allowed. */ struct MachineClass { /*< private >*/ @@ -224,6 +231,8 @@ struct MachineClass { HotplugHandler *(*get_hotplug_handler)(MachineState *machine, DeviceState *dev); + bool (*hotplug_allowed)(MachineState *state, DeviceState *dev, + Error **errp); CpuInstanceProperties (*cpu_index_to_instance_props)(MachineState *machine, unsigned cpu_index); const CPUArchIdList *(*possible_cpu_arch_ids)(MachineState *machine); diff --git a/include/hw/qdev-core.h b/include/hw/qdev-core.h index de70b7a..aa123f8 100644 --- a/include/hw/qdev-core.h +++ b/include/hw/qdev-core.h @@ -280,6 +280,7 @@ void qdev_set_legacy_instance_id(DeviceState *dev, int alias_id, int required_for_version); HotplugHandler *qdev_get_bus_hotplug_handler(DeviceState *dev); HotplugHandler *qdev_get_machine_hotplug_handler(DeviceState *dev); +bool qdev_hotplug_allowed(DeviceState *dev, Error **errp); /** * qdev_get_hotplug_handler: Get handler responsible for device wiring * |