> I get: > > mov %gs:0x18(%rax),%rdx > > Looks to me that %gs is used.
%gs is used as a segment prefix. That does not add significant cycles. Retrieving the content of %gs and loading it into another register would be expensive in terms of cpu cycles. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
