There are no plans currently to write a user space AHCI driver. We don't expect SATA/AHCI devices to ever be fast enough to warrant moving away from using the standard kernel drivers. Instead, I recommend you use Linux AIO (if you are on Linux), which provides an asynchronous interface for sending I/O but uses the kernel storage stack. On Fri, 2016-04-08 at 12:52 +0800, jiakai1000(a)gmail.com wrote: ________________________________ jiakai1000(a)gmail.com _______________________________________________ SPDK mailing list SPDK@lists.01.org<mailto:SPDK@lists.01.org> https://lists.01.org/mailman/listinfo/spdk