asm volatile(
	"mov $0x2B, %%rbx		\n\t"
	"mov %%rbx, %%fs		\n\t"

	"movl $0xC0000100, %%ecx	\n\t"
	"movl %[lo], %%eax		\n\t"
	"movl %[hi], %%edx		\n\t"
	"wrmsr"
	:: [lo]"g"(tlsptr & 0xFFFFFFFF), [hi]"g"(tlsptr >> 32) : "memory");