PCI Hot Plug User's Guide 2.5.1

2.1.1.1 Common requirements and notes of PCI Hot Plug operations

• System's run level should be multi-user to operate PCI Hot Plug.
• To insert or remove PCI cards, the READY LED must be off. If it is on, the operation may cause hardware failures. The Solaris OS device driver architecture implicitly requires that all drivers support dynamic addition of a new device instance. Therefore all drivers should support the PCI Hot Plug configure operation. Refer to "1.2.1 Hardware" for more details regarding LED.
• The OBP (Open Boot Prom) device tree is not updated when a PCI Hot Plug configure/disconnect operation is performed.
• When the pushbutton interface for a PCI slot is disabled, the conditions for each PCI Hot Plug operation may vary.
  Please refer to the following table for combinations of settings and available operations.
  

Combinations of settings and available PCI Hot Plug operations

enable / disable pushbutton interface	PCI Hot Plug operations using pushbutton	operations using command line interface
enable_autoconfig	Y	Y
disable_autoconfig	N	Y

During PCI Hot Plug operations, Dynamic Reconfiguration (DR) operations must not be performed.
DR operations might cause the system to go down Please refer to "Dynamic Reconfiguration User's Guide" for details regarding DR.

• Please note the followings when using PCI Hot Plug in zones.
  • PCI Hot Plug operation is only possible in a global zone. PCI Hot Plug operation is not available in a non-global zone.
  • If physical devices are assigned to the non-global zone, PCI Hot Plug disconnect operation might be failed. When using PCI Hot Plug in zones, please consider about these limitations prior to the system deployment.
    

  For more details about zones, please refer to "System Administration Guide: Solaris Containers -- Resource Management and Solaris Zones".