native_read_msr
vmsa->efer = native_read_msr(MSR_EFER);
u64 __val = native_read_msr((msr)); \
((val) = native_read_msr((msr)))
return native_read_msr(reg);
.cpu.read_msr = native_read_msr,
val = native_read_msr(msr);