Comment 16 for bug 294123

Thank you Morgan for the description of the workaround. I also got my system up and running with the "all_generic_ide" option, but it feels substantially slower than under the 2.6.24 or 2.6.25 kernel, where ata_piix takes care of it.... At boot time, the disk ist "noisier", it sounds as if there are much more physical disk accesses than with ata_piix. As I said, I'm not a driver programmer, but I would assume that the ata_piix driver supports more efficient access models, maybe Native Command Queueing, and other things that can increase disk performance. The speed difference is also noticeable after logging into the gnome desktop (all the applets and menu icons are loaded much faster under 2.6.24 without "all_generic_ide"), and when compiling the kernel.