Hi Jan, Am 23.06.2012 11:28, schrieb Jan Kiszka: > just stumbled over the memory_region_set_coalescing in pci_i82378_init: > What ISA devices are affected by this? It looks a bit strange to me as > the MMIO requests are apparently mapped on PIO requests, and we don't > have PIO coalescing on x86. Depending on the target device on PREP, this > may have some unexpected side effects. Or is only framebuffer memory > addressed this way?
I only remember touching that line to rebase it onto either Memory API or QOM. The i82378 is the sole PCI-ISA bridge so all ISA devices will be affected by it, which is pretty much everything except VGA iirc. The upcoming pc87312(?) Super I/O also would be attached to it, replacing some of the bogus I/O in the current "prep" machine. I'm not familiar with what this option affects. What unexpected side effects would you expect? :) Regards, Andreas
