CONFIG_UNIX98_PTY_COUNT is not available for thedefaultarchitecture x86.
Result is shown for architecture sparc
default or selected kernelversion does not have config value CONFIG_UNIX98_PTY_COUNT.
Result is shown for kernelversion 5.4.123
Maximum number of Unix98 PTYs in use (0-2048)
configname: CONFIG_UNIX98_PTY_COUNT
Linux/SPARC Kernel Configuration
└─>Unix98 PTY support
└─>Maximum number of Unix98 PTYs in use (0-2048)
In linux kernel since version 2.6.12
The maximum number of Unix98 PTYs that can be used at any one time.
The default is 256, and should be enough for desktop systems. Server
machines which support incoming telnet/rlogin/ssh connections and/or
serve several X terminals may want to increase this: every incoming
connection and every xterm uses up one PTY.
When not in use, each additional set of 256 PTYs occupy
approximately 8 KB of kernel memory on 32-bit architectures.
The default is 256, and should be enough for desktop systems. Server
machines which support incoming telnet/rlogin/ssh connections and/or
serve several X terminals may want to increase this: every incoming
connection and every xterm uses up one PTY.
When not in use, each additional set of 256 PTYs occupy
approximately 8 KB of kernel memory on 32-bit architectures.