Distribution specific information

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Find out as of which Linux distribution a new function is supported.

This document does not provide information that is specific to a particular Linux® distribution. The device drivers, features, options, and commands it describes are either provided with the Linux kernel on www.kernel.org, on GitHub, or are commonly available tools.

Your Linux distribution might provide additional utilities for working with IBM Z® devices that are not described in this publication. See the documentation that is provided with your distribution to find out what additional utilities you can use.

For versions of this and other documents that have been adapted to a particular distribution, see one of the following web pages:

The following tables provide a summary of functionality for which there is no distribution-specific documentation.

Red Hat® Enterprise Linux

Table 1. These functions were introduced in Red Hat Enterprise Linux 10.1
Name Description Chapter
Topology information Provide topology-map information to user space zmemtopo - Display memory topography.
Power consumption LPAR-level power consumption zpwr - Retrieve power readings
Table 2. These functions were introduced in Red Hat Enterprise Linux 10
Name Description Chapter
DASD peer-to-peer remote copy The DASD device driver can now handle devices with copy-pair relations. Working with DASDs in a copy-pair relation.
DASD autoquiesce You can control the DASD autoquiesce feature with sysfs attributes. See Autoquiesce, Requeue, and Timeouts for autoquiesce.
Independent usage of physical function Linux can handle physical functions of an SR-IOV capable PCI device independently. Network Express in direct mode.
New channel measurements With the chpstat command, you can view channel-path statistics such as utilization and throughput, and query and control the status of the channel-path statistics function chpstat - Display channel-path statistics.
Memory hotplug vmem pages The memory hotplug subsystem provides a dedicated namespace for module parameters. Module parameters.
SMC: dedicated sysctls for default r/w buffer sizes The default buffer size is now controlled though the net.smc.[rw]mem attribute. Setting up the SMC support
LCS deprecated and removed. The LCS device driver is deprecated and information about it was removed in version 10. The chapter about the "LAN channel station device driver" was removed.
Table 3. These functions were introduced in 10 and 9.6
Name Description Chapter
Vertical CPU polarization HiperDispatch automatically adjusts capacity values for vertical polarization. You can influence the decision making of HiperDispatch by setting sysfs attributes. Controlling vertical polarization (HiperDispatch)
IBM® z17 ™ hardware base kernel support IBM z17 support
IBM z17 has been added to:
CPU-MF counters for IBM z17 CPU-Measurement Facility counters for IBM z17 . Using the CPU-measurement facilities
Promiscuous mode exploitation for new VFs Read a sysfs attribute to check the FID parameter setting. Configuring FIDPARM to support promiscuous mode on a VF
cpacfinfo: tool to provide CPACF information The cpacfinfo command now displays firmware authentication information in form of a hash. cpacfinfo - Obtain CPACF cryptographic information
Table 4. These functions were introduced in 9.4 and 8.10
Name Description Chapter
Secure execution AP queue binding support The chzcrypt and lszcrypt commands have been updated to handle binding and associating requests for KVM guests running in secure-execution mode on hardware and software that supports those functions.
Table 5. These functions were introduced in 9.3 and 8.9
Name Description Chapter
ASD autoquiesce support (gdps) You can now control the DASD autoquiesce feature with new sysfs attributes.
hyptop update Add real smt utilization to the hyptop command. hyptop - Display hypervisor performance data
The lspai command You can now display PAI cryptographic counters with the lspai command. lspai - List Processor Activity Instrumentation counters
zcrypt command filtering The lszcrypt command now displays whether command filtering is available for a cryptographic adapter. lszcrypt - Display cryptographic devices

SUSE Linux Enterprise Server

Table 6. These functions were introduced in SUSE Linux Enterprise Server 16
Name Description Chapter
DASD peer-to-peer remote copy The DASD device driver can now handle devices with copy-pair relations. Working with DASDs in a copy-pair relation.
New channel measurements With the chpstat command, you can view channel-path statistics such as utilization and throughput, and query and control the status of the channel-path statistics function chpstat - Display channel-path statistics.
IBM z17 hardware base kernel support IBM z17 support
IBM z17 has been added to:
CPU-MF counters for IBM z17 CPU-Measurement Facility counters for IBM z17 . Using the CPU-measurement facilities
LPAR-level power consumption Provide a command to show LPAR-level power consumption zpwr - Retrieve power readings
KRN2401 ? TBD
Promiscuous Mode Exploitation for new VFs Read a sysfs attribute to check the FID parameter setting. Configuring FIDPARM to support promiscuous mode on a VF
In-kernel crypto In-kernel crypto PHMAC support for MSA 11 HMAC Support modules
cpacfinfo: tool to provide CPACF information The cpacfinfo command now displays firmware authentication information in form of a hash. cpacfinfo - Obtain CPACF cryptographic information
Table 7. These functions were introduced in SUSE Linux Enterprise Server 15 SP7
Name Description Chapter
New channel measurements With the chpstat command, you can view channel-path statistics such as utilization and throughput, and query and control the status of the channel-path statistics function chpstat - Display channel-path statistics.
Vertical CPU polarization HiperDispatch automatically adjusts capacity values for vertical polarization. You can influence the decision making of HiperDispatch by setting sysfs attributes. Controlling vertical polarization (HiperDispatch)
IBM z17 hardware base kernel support IBM z17 support
IBM z17 has been added to:
CPU-MF counters for IBM z17 CPU-Measurement Facility counters for IBM z17 . Using the CPU-measurement facilities
SMC: dedicated sysctls for default read-write buffer sizes The default buffer size is now controlled though the net.smc.[rw]mem attribute. Setting up the SMC support
Promiscuous Mode Exploitation for new VFs Read a sysfs attribute to check the FID parameter setting. Configuring FIDPARM to support promiscuous mode on a VF
cpacfinfo: tool to provide CPACF information The cpacfinfo command now displays firmware authentication information in form of a hash. cpacfinfo - Obtain CPACF cryptographic information
Table 8. These functions were introduced in SUSE Linux Enterprise Server 15 SP6
Name Description Chapter
ASD autoquiesce support (gdps) You can now control the DASD autoquiesce feature with new sysfs attributes.
CCW standalone dumper deflate exploitation The zipl command has a new option that suppresses the automatic compression of CCW-type DASD dumps. Preparing a dump device
hyptop update Real smt utilization was added to the hyptop command. hyptop - Display hypervisor performance data
The lspai command You can now display PAI cryptographic counters with the lspai command. lspai - List Processor Activity Instrumentation counters
zcrypt command filtering The lszcrypt command now displays whether command filtering is available for a cryptographic adapter. lszcrypt - Display cryptographic devices
Secure execution AP queue binding support The chzcrypt and lszcrypt commands have been updated to handle binding and associating requests for KVM guests running in secure-execution mode.

Ubuntu Server

Table 9. These functions were introduced in 25.10 (Questing Quokka)
Name Description Chapter
In-kernel crypto In-kernel crypto PHMAC support for MSA 11 HMAC Support modules
Table 10. These functions were introduced in 23.10 and 24.04
Name Description Chapter
DASD autoquiesce support (gdps) You can now control the DASD autoquiesce feature with new sysfs attributes.
CCW standalone dumper deflate exploitation The zipl command has a new option that suppresses the automatic compression of CCW-type DASD dumps. Preparing a dump device
hyptop update Real smt utilization was added to the hyptop command. hyptop - Display hypervisor performance data
The lspai command You can now display PAI cryptographic counters with the lspai command. lspai - List Processor Activity Instrumentation counters
zcrypt command filtering The lszcrypt command now displays whether command filtering is available for a cryptographic adapter. lszcrypt - Display cryptographic devices