Shaohua Li wrote: >> IIRC, not all NCQ-capable controllers support this feature... SATA 1.0 >> hardware may not behave properly in response, no? > It appears the AHCI spec doesn't define a HBA capability about this > feature, but I'm likely wrong as I'm not quite familar with SATA. IIRC, AA is in the ahci spec from rev 1.0, so if controllers implement the spec correctly, it should work. But even for ahcis, if we enable it by default, I'm fairly sure we'll be met by a number of unpleasant surprises. Not sure whether doing that would be worth the trouble or not. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html