On 11-05-03 11:07 AM, Alan Cox wrote: > On Tue, 03 May 2011 11:04:12 -0400 > Mark Lord <kernel@xxxxxxxxxxxx> wrote: > >> On 11-05-02 02:52 PM, Alan Cox wrote: >>> >>> The queue depth and tag limits come from the SATA standard and also leak >>> fairly comprehensively into the AHCI spec so not unless the hardware has >>> extensions for it and is merely faked SATA (and if you are faking SATA >>> you have to wonder why if your goal is max performance) >> >> >> The reason to "fake" SATA and/or ATA is unchanged since the 1990s: >> so that the system BIOS can boot from the device, and the operating system >> can work up to the point where it finally loads hardware-specific drivers. > > The BIOS emulation is for legacy IDE style interfaces not AHCI. I know that. That's only half of it. -- 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
