default or selected kernelversion does not have config value CONFIG_VGACON_SOFT_SCROLLBACK.
Result is shown for kernelversion 6.5.1
Enable Scrollback Buffer in System RAM
configname: CONFIG_VGACON_SOFT_SCROLLBACK
Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Console display driver support
└─>Enable Scrollback Buffer in System RAM
In linux kernel since version 2.6.20 (release Date: 2007-02-04)
The scrollback buffer of the standard VGA console is located in
the VGA RAM. The size of this RAM is fixed and is quite small.
If you require a larger scrollback buffer, this can be placed in
System RAM which is dynamically allocated during initialization.
Placing the scrollback buffer in System RAM will slightly slow
down the console.
If you want this feature, say 'Y' here and enter the amount of
RAM to allocate for this buffer. If unsure, say 'N'.
the VGA RAM. The size of this RAM is fixed and is quite small.
If you require a larger scrollback buffer, this can be placed in
System RAM which is dynamically allocated during initialization.
Placing the scrollback buffer in System RAM will slightly slow
down the console.
If you want this feature, say 'Y' here and enter the amount of
RAM to allocate for this buffer. If unsure, say 'N'.