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| author | Laszlo Ersek <lersek@redhat.com> | 2017-03-20 18:05:57 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2017-03-22 18:29:27 +0200 |
| commit | f92063028a0ea9e15d8f962644bce76c0e8aa7d1 (patch) | |
| tree | aa6351da0d31306379373403493ee34065c05391 /hw/acpi | |
| parent | f2a1ae45d8ec5ad494e66a9234499a2e0fbf4b40 (diff) | |
| download | qemu-f92063028a0ea9e15d8f962644bce76c0e8aa7d1.tar.gz | |
hw/acpi/vmgenid: prevent more than one vmgenid device
A system with multiple VMGENID devices is undefined in the VMGENID spec by
omission.
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Ben Warren <ben@skyportsystems.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Diffstat (limited to 'hw/acpi')
| -rw-r--r-- | hw/acpi/vmgenid.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/hw/acpi/vmgenid.c b/hw/acpi/vmgenid.c index c3ddcc8e7c..a32b847fe0 100644 --- a/hw/acpi/vmgenid.c +++ b/hw/acpi/vmgenid.c @@ -221,6 +221,14 @@ static void vmgenid_realize(DeviceState *dev, Error **errp) return; } + /* Given that this function is executing, there is at least one VMGENID + * device. Check if there are several. + */ + if (!find_vmgenid_dev()) { + error_setg(errp, "at most one %s device is permitted", VMGENID_DEVICE); + return; + } + qemu_register_reset(vmgenid_handle_reset, vms); } |