[Qemu-devel] [PATCH 0/3] Object-based physical memory management

[Avi Kivity <avi@redhat.com>]

Currently, qemu manages physical memory at a page granularity (and with
subpage, at a byte granularity).  This is expensive in memory and runtime
(requiring 8 bytes per page, and likely a cache miss on access), and is
difficult to manage: devices must remember their ranges so they can free
them, and the memory system has no insight into how memory is laid out.

This patchset introduces object-based memory management.  The first patch
adds objects and functions for memory regions; the second patch wraps this
for PCI; and the third converts RTL8139 as an example.

Avi Kivity (3):
  Add PhysicalMemoryRegion type
  Add PCI memory region registration
  Convert RTL8139 to use PCI memory regitration facility

 cpu-all.h    |   13 +++++++++
 exec.c       |   42 +++++++++++++++++++++++++++++++
 hw/pci.c     |   78 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 hw/pci.h     |   26 +++++++++++++++++++
 hw/rtl8139.c |   15 +++-------
 5 files changed, 163 insertions(+), 11 deletions(-)