The number of processors that are supported by various z/OS and z/VM releases are listed in  Table 8-3. a. Supported Linux on Z distributions (for more information, see Chapter 7, “Operating system  support” on page 255).  Software charges, which are based on the total capacity of the system on which the software  is installed, are adjusted to the new capacity after the MES upgrade. Software products that use Workload License Charges (WLC) or Taylor Fit Pricing (TFP)  might not be affected by the system upgrade. Their charges are based on partition usage, not  on the system total capacity. For more information about WLC, see 7.8, “Software licensing”  on page 326. MES upgrades for memory can concurrently add more memory in the following ways: The Flexible Memory Feature is available to allow better control over future memory  upgrades. For more information about flexible memory features, see 2.5.7, “Flexible Memory  Option” on page 65.  If the z15 server is a multiple processor drawer configuration, you can use the EDA feature to  remove a processor drawer and add DIMM memory cards. It can also be used to upgrade the  installed memory cards to a larger capacity size. You can then use LICCC to enable the extra  memory.  8.3.2 MES upgrades for memory GLYPH<SM590000> Through LICCC, which enables more capacity up to the limit of the currently installed  DIMM memory cards GLYPH<SM590000> Concurrently installing more CPC drawers and LICCC-enabling memory capacity on the  new CPC drawers. 348  IBM z15 (8561) Technical Guide Operating system Number of processors that are supported z/OS V2R2 190 PUs per z/OS LPAR in non-SMT mode and 128 PUs per  z/OS LPAR in SMT mode. For both, the PU total is the sum of CPs  and zIIPs. z/OS V2R3 190 PUs per z/OS LPAR in non-SMT mode and 128 PUs per  z/OS LPAR in SMT mode. For both, the PU total is the sum of CPs  and zIIPs. z/OS V2R4 190 PUs per z/OS LPAR in non-SMT mode and 128 PUs per  z/OS LPAR in SMT mode. For both, the PU total is the sum of CPs  and zIIPs. z/VM V7R1 64 (or 32 in SMT mode). z/VM V6R4 64 (or 32 in SMT mode). z/VSE z/VSE Turbo Dispatcher can use up to 4 CPs, and tolerates up to  10-way LPARs. z/TPF 86 CPs. Linux on IBM Z -190 CPs Linux$^{a}$ supports 256 cores without SMT and 128 cores with SMT  (256 threads). Table 8-3 Number of processors that are supported by the operating system