xfeature_enabled

函数名称：Note that in the future we will likely need a pair of* functions here: one for user xstates and the other for* system xstates. For now, they are the same.

函数原型：static int xfeature_enabled(enum xfeature xfeature)

返回类型：int

参数：

类型	参数	名称
enum xfeature	xfeature

**调用者**
名称	描述
setup_xstate_features	Record the offsets and sizes of various xstates contained* in the XSAVE state memory layout.
setup_xstate_comp	This function sets up offsets and sizes of all extended states in* xsave area. This supports both standard format and compacted format* of the xsave aread.
print_xstate_offset_size	Print out xstate component offsets and sizes
do_extra_xstate_size_checks	This essentially double-checks what the cpu told us about* how large the XSAVE buffer needs to be. We are recalculating* it to be safe.
__raw_xsave_addr	Given an xstate feature nr, calculate where in the xsave* buffer the state is. Callers should ensure that the buffer* is valid.

函数逻辑报告