CONFIG_FP_SHARING

This option allows multiple tasks and fibers to use the floating point registers. Any task that uses the floating point registers must provide stack space where the kernel can save these registers during context switches; a task that uses only the x87 FPU/MMX registers must provide 108 bytes of added stack space, while a task the uses the SSE registers must provide 464 bytes of added stack space.

Symbol:

FP_SHARING

Type:

bool

Value:

“n”

User value:

(no user value)

Visibility:

“n”

Is choice item:

false

Is defined:

true

Is from env.:

false

Is special:

false

Prompts:

• “Floating point register sharing” if FLOAT (value: “n”)

Default values:

• n (value: “n”)
• Condition: FLOAT (value: “n”)

Selects:

(no selects)

Reverse (select-related) dependencies:  

(no reverse dependencies)

Additional dependencies from enclosing menus and ifs:  

CPU_HAS_FPU && X86 (value: “n”)

Locations:

• ../arch/x86/Kconfig:98