FWIW, we're building systems with OSB4s, and can consistently
generate the advertised IDE corruption if we enable Ultra DMA (this
is with RH 2.4.9-31, which has an extra OSB4 warning message; the
message correlates with on-disk corruption).
After suffering with PIO for a month or three, we did fairly
extensive testing with multiword DMA (non-Ultra), and are feeling
confident enough about it to leave it turned on.
-- /Jonathan Lundell. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/