On 6/14/07, Marc Jones <[EMAIL PROTECTED]> wrote: > Now that I think about it, it makes sense that you can't set writeback > to noncoherent (nonsystem) memory space. What if another device wants to > write to that memory. There is no way for the cache to snoop that it was > written. You would need a coherent HT link to to your FPGA to get the > cache snoop messaging.
Also, writeback would be a disaster for drivers. The expectation for a driver is that when the code sets bist in an MMIO space, that bit gets set. That's a writethrough semantic. thanks ron -- linuxbios mailing list linuxbios@linuxbios.org http://www.linuxbios.org/mailman/listinfo/linuxbios
