CONFIG_FAST_SYSCALL_SPILL_REGISTERS is not available for thedefaultarchitecture x86.
Result is shown for architecture xtensa
Enable spill registers syscall
configname: CONFIG_FAST_SYSCALL_SPILL_REGISTERS
Linux Kernel Configuration
└─>Processor type and features
└─>Enable spill registers syscall
In linux kernel since version 3.17 (release Date: 2014-10-05)
fast_syscall_spill_registers is a syscall that spills all active
register windows of a calling userspace task onto its stack.
This syscall is deprecated. It may have issues when called with
invalid arguments. It is provided only for backwards compatibility.
Only enable it if your userspace software requires it.
If unsure, say N.
register windows of a calling userspace task onto its stack.
This syscall is deprecated. It may have issues when called with
invalid arguments. It is provided only for backwards compatibility.
Only enable it if your userspace software requires it.
If unsure, say N.