[Qemu-devel] [PATCH,RFC]: Generic memory callback regions

[Gianni Tedesco]

Hi,

This patch adds an API for CONFIG_SOFTMMU mode that hardware drivers can
use to add memory regions backed by callback functions. It simply adds a
layer for storing opaque data above the basic cpu_register_io_memory /
cpu_register_physical memory functions. I used a linked list to store
the data structures, i think O(ln/2) avg. lookup time will be fine as I
don't envisage many of these regions existing.

I've tested it as far as I currently can for the pciproxy code and it
seems to do the correct thing. I could work around this manually within
the pciproxy code itself, but I figured a generic interface would be
something useful for other drivers (such as any PCI card with MMIO
resources).

Ideas / thoughts / bugs?

-- 
// Gianni Tedesco (gianni at scaramanga dot co dot uk)
lynx --source www.scaramanga.co.uk/scaramanga.asc | gpg --import
8646BE7D: 6D9F 2287 870E A2C9 8F60 3A3C 91B5 7669 8646 BE7D

qemu-mem-callbacks-1.diff
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