## 6.8 Cryptographic operating system support for z15 

The following section gives an overview of the operating systems requirements in relation to cryptographic elements. 

## 6.8.1 Crypto Express7S Toleration 

Crypto Express7S (0898/0899) Toleration treats Crypto Express7S cryptographic coprocessors and accelerators as Crypto Express5 coprocessors and accelerators. The following minimum prerequisites must be met: 

GLYPH<SM590000> z/OS V2.4$^{8}$; certain functions require WD19 (HCR77D1) 

GLYPH<SM590000> z/OS V2.3 with PTFs 

GLYPH<SM590000> z/OS V2.2 with PTFs 

GLYPH<SM590000> z/OS V2.1 with PTFs 

GLYPH<SM590000> z/VM V7.1 for guest use 

GLYPH<SM590000> z/VM V6.4 with PTFs for guest use 

GLYPH<SM590000> z/VSE V6.2 with PTFs 

GLYPH<SM590000> z/TPF V1.1 with PTFs 

GLYPH<SM590000> Linux on Z: IBM is working with its Linux distribution partners to provide support by way of maintenance or future releases for the following distributions: 

– SUSE Linux Enterprise Server 12 and SLES 11 

– Red Hat Enterprise Linux (RHEL) 7 and Red Hat Enterprise Linux 6 

– Ubuntu 16.04 LTS (or higher) 

GLYPH<SM590000> The KVM hypervisor, which is offered with SLES 12 SP2 with service, RHEL 7.5 with kernel-alt package (kernel 4.14) and Ubuntu 16.04 LTS with service, and Ubuntu 18.04 LTS with service Linux distributions. For more information about minimal and recommended distribution levels, see the Tested platforms for Linux web page of the IBM IT infrastructure website. 

## 6.8.2 Crypto Express7S support of VFPE 

The following minimum prerequisites must be met to use this element: 

GLYPH<SM590000> z/OS V2.4$^{8}$ with PTFs 

GLYPH<SM590000> z/OS V2.3 with PTFs 

GLYPH<SM590000> z/OS V2.2 with the Enhanced Cryptographic Support for z/OS V1.13-V2.2 web deliverable installed 

GLYPH<SM590000> z/VM V7.1 with PTFs for guest use 

GLYPH<SM590000> z/VM V6.4 with PTFs for guest use 

GLYPH<SM590000> Linux on IBM Z: 

– SUSE SLES 15 SP1 with service, SUSE SL ES 12 SP4 with service, and SUSE SLES 11 SP4 with service. 

– Red Hat RHEL 8.0 with service, Red Hat RHEL 7.7 with service, and Red Hat RHEL 6.10 with service. 

