K 10
svn:author
V 8
gallatin
K 8
svn:date
V 27
2009-10-19T19:14:04.349076Z
K 7
svn:log
V 599
MFC of 178042 to allow safe firmware(9) loading from NIC watchdog handlers.
     Also MFCed are the related changes 178016, 183614 and 184842.

178042: Do firmare image loading in a context known to have a root directory
183614: Dynamically allocate the task struct in firmware mountroot
184842: Avoid scheduling firmware taskqueues when cold
178016: Add a mountroot event handler.  Removal of SI_SUB_MOUNT_ROOT
        was not merged.  178042 is dependant upon this.

This fixes a panic in at least mxge(4) if the NIC has a hardware fault
when the firmware image is not resident.

Reviewed by:	jhb

END