System resourcesEdit online These device drivers and features help you to manage the resources of your real or virtual hardware. Channel subsystemYou can trigger a reevaluation of the I/O subchannels, and you can control the channel path measurement facility.Managing CPUsYou can control the online status, check the capability, and, for LPAR mode, examine the topology of CPUs.Memory hotplugYou can dynamically increase or decrease the memory for your running Linux® instance. Persistent device configurationUse the chzdev command to persistently configure your devices and device drivers and the lszdev command to view your configuration.Huge-page supportHuge-page support entails support for the Linux® hugetlbfs file system. S/390 hypervisor file systemThe S/390® hypervisor file system (hypfs) provides a mechanism to access LPAR and z/VM® hypervisor data. CHSC subchannel device driverThe CHSC subchannel device driver provides a means for user space programs to obtain information about the machine setup and to perform asynchronous channel subsystem calls that modify the machine setup.Call logical processor device driverThrough the call logical processor (CLP) device driver, you can issue a restricted set of CLP instructions to retrieve information about available PCI functions.TOD clock synchronizationYour Linux® instance might be part of an extended remote copy (XRC) setup that requires synchronization of the Linux® time-of-day (TOD) clock with a Coordinated Timing Network (CTN).Identifying the IBM Z hardwareIn installations with several IBM Z® mainframes, you might need to identify the particular hardware system on which a Linux® instance is running.HMC media device driverYou use the HMC media device driver to access files on removable media at a system that runs the Hardware Management Console (HMC).Data compression with the Integrated Accelerator for zEDCThe Integrated Accelerator for zEDC provides on-chip hardware-acceleration for data compression and decompression.Data compression with GenWQE and zEDC ExpressGeneric Work Queue Engine (GenWQE) supports hardware-accelerated data compression and decompression through zEDC Express, a PCIe-attached Field Programmable Gate Array (FPGA) acceleration adapter.PCI Express supportThe Peripheral Component Interconnect Express (PCIe) device driver supports various PCI devices, including but not limited to devices that implement the SMC network protocol.Parent topic: Device Drivers, Features, and Commands - Linux kernel 6.14
