[Qemu-devel] [PATCH v2 0/6] pci: keep window properties up to date

[Michael S. Tsirkin]

w32/w64 properties that we report in QOM are
currently static, but this is wrong:
guest firmware can select its own windows:
optimal placement for w64 is guest-dependent, further,
for Q35, w32 is affected by the MCFG base and size.

This detects the actual window configuration used by guest
and reports it in QOM.

Changes from v1:
Fix up issues noted by Igor:
    - ignore addresses below 1<<32 when getting W64
    - don't change W64 - instead calculate it in
      a local variable. This way users are forced
      to use the property API so they won't get
      an out of date range by accessing w64 directly.

Note: maybe we should get rid of the pci_info struct completely, it doesn't
seem to be all that useful anymore.

However, this is better addressed by a separate patch.

Michael S. Tsirkin (6):
  q35: make pci window address/size match guest cfg
  range: add Range to typedefs
  range: add min/max operations on ranges
  pci: add helper to retrieve the 64-bit range
  q35: use 64 bit window programmed by guest
  piix: use 64 bit window programmed by guest

 include/hw/pci/pci.h    |  1 +
 include/qemu/range.h    | 19 ++++++++++++++++++-
 include/qemu/typedefs.h |  1 +
 hw/pci-host/piix.c      | 14 ++++++++++----
 hw/pci-host/q35.c       | 24 ++++++++++++++++++++----
 hw/pci/pci.c            | 50 +++++++++++++++++++++++++++++++++++++++++++++++++
 6 files changed, 100 insertions(+), 9 deletions(-)

-- 
MST