Motorola Corporation

Mark Huth

Mark S Lanus

In a bridged, pipelined network (FIG. 1), a network-to-host bridge ( ) identifies the address space of a host computer (FIG. 2) as not being contained within the host computer memory space ( ). During the removal of the host computer ( ) and its replacement by a new host computer, the network-to-host bridge ( ) momentarily locks out traffic (FIG. 3, step ) in order to disable peripheral components (FIG. 1, ) from initiating bus transactions. When the new host computer is installed (FIG. 3, step ) and the bus lockout is removed (step ), the new host memory area is protected from direct memory access transactions which were stored in the bus hierarchy during the host computer swap.

Method for host protection during hot swap in a bridged, pipelined network

A method of managing memory includes providing a memory ( ) partitioned into a memory tree having N memory levels and different numbers of memory nodes ( ) at each of the memory levels, providing a memory request, determining a memory request size, recursively searching partially-full subtrees within the memory tree to identify an empty one of the memory nodes minimizing fragmentation within the memory tree, and allocating the memory request to the empty one of the memory nodes.

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Glendale, AZ, United States of America

Mark Huth