AIX 5L v5.2 Technical Reference: Kernel and Subsystems

This publication offers information regarding kernel prone, machine driving force operations, dossier method operations, subroutines, the configuration subsystem, the communications subsystem, the low functionality terminal (LFT) subsystem, the logical quantity subsystem, the M-audio seize and playback adapter subsystem, the printer subsystem, the SCSI subsystem, and the serial DASD subsystem.This e-book is a part of the six-volume technical reference set, AIX 5L model 5.2 Technical Reference, that gives info on process calls, kernel extension calls, and subroutines within the following volumes: * AIX 5L model 5.2 Technical Reference: Base working method and Extensions quantity 1 and AIX 5L model 5.2 Technical Reference: Base working procedure and Extensions quantity 2 supply info on method calls, subroutines, services, macros, and statements linked to base working process runtime providers. * AIX 5L model 5.2 Technical Reference: Communications quantity 1 and AIX 5L model 5.2 Technical Reference: Communications quantity 2 offer details on access issues, features, approach calls, subroutines, and operations on the topic of communications companies. * AIX 5L model 5.2 Technical Reference: Kernel and Subsystems quantity 1 and AIX 5L model 5.2 Technical Reference: Kernel and Subsystems quantity 2 offer information regarding kernel companies, equipment motive force operations, dossier process operations, subroutines, the configuration subsystem, the communications subsystem, the low functionality terminal (LFT) subsystem, the logical quantity subsystem, the M-audio seize and playback adapter subsystem, the printer subsystem, the SCSI subsystem, and the serial DASD subsystem.

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Note: The as_remap64 kernel service is not supported on the 64-bit kernel. Execution Environment The as_remap64 kernel service can be called from the process environment only. Return Values 0 EINVAL Successful completion. The process is 32-bit, and addr64 is not a valid 32-bit address or Too many address ranges have already been mapped. Related Information The as_unremap64 kernel service. 2 Kernel Extensions and Device Support Programming Concepts. as_seth Kernel Service Purpose Maps a specified region in the specified address space for the specified virtual memory object.

On this system, the upper 4 bits of this address are used to determine which region to allocate. Description The as_seth kernel service: v Allocates the region within the address space specified by the adspacep parameter and the addr parameter. Any virtual memory object previously mapped in this region of the address space is unmapped. v Maps the virtual memory object selected by the vmhandle parameter with the access permission specified in the handle. The as_seth kernel service should only be used when it is necessary to map a virtual memory object at a fixed address within an address space.

Execution Environment The cfgndel kernel service can be called from the process environment only. Return Values The cfgndel service has no return values. Related Information The sysconfig subroutine. The cfgncb configuration notification control block. The cfgnadd kernel service. Chapter 1. 2 Kernel Extensions and Device Support Programming Concepts. check Device Queue Management Routine Purpose Provides a means for performing device-specific validity checking for parameters included in request queue elements.

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