Function clflush

freebsd/amd64/include/cpufunc.h:76–81

#define	bsrq(mask)	(__builtin_clzl(mask) ^ 0x3f)

static __inline void
clflush(u_long addr)
{

	__asm __volatile("clflush %0" : : "m" (*(char *)addr));
}

static __inline void
clflushopt(u_long addr)