[v2,00/21] hw/vfio: Build various objects once

Message

Philippe Mathieu-Daudé March 8, 2025, 11:08 p.m. UTC

By doing the following changes:
- Clean some headers up
- Replace compile-time CONFIG_KVM check by kvm_enabled()
- Replace compile-time CONFIG_IOMMUFD check by iommufd_builtin()
we can build less vfio objects.

Since v1:
- Added R-b tags
- Introduce type_is_registered()
- Split builtin check VS meson changes (rth)
- Consider IGD

Philippe Mathieu-Daudé (21):
  hw/vfio/common: Include missing 'system/tcg.h' header
  hw/vfio/spapr: Do not include <linux/kvm.h>
  hw/vfio: Compile some common objects once
  hw/vfio: Compile more objects once
  hw/vfio: Compile iommufd.c once
  system: Declare qemu_[min/max]rampagesize() in 'system/hostmem.h'
  hw/vfio: Compile display.c once
  system/kvm: Expose kvm_irqchip_[add,remove]_change_notifier()
  hw/vfio/pci: Convert CONFIG_KVM check to runtime one
  qom: Introduce type_is_registered()
  hw/vfio/igd: Define TYPE_VFIO_PCI_IGD_LPC_BRIDGE
  hw/vfio/igd: Check CONFIG_VFIO_IGD at runtime using vfio_igd_builtin()
  hw/vfio/igd: Compile once
  system/iommufd: Introduce iommufd_builtin() helper
  hw/vfio/pci: Check CONFIG_IOMMUFD at runtime using iommufd_builtin()
  hw/vfio/pci: Compile once
  hw/vfio/ap: Check CONFIG_IOMMUFD at runtime using iommufd_builtin()
  hw/vfio/ccw: Check CONFIG_IOMMUFD at runtime using iommufd_builtin()
  hw/vfio/s390x: Compile AP and CCW once
  hw/vfio/platform: Check CONFIG_IOMMUFD at runtime using
    iommufd_builtin
  hw/vfio/platform: Compile once

 docs/devel/vfio-iommufd.rst  |  2 +-
 hw/vfio/pci-quirks.h         |  8 +++++
 include/exec/ram_addr.h      |  3 --
 include/qom/object.h         |  8 +++++
 include/system/hostmem.h     |  3 ++
 include/system/iommufd.h     |  6 ++++
 include/system/kvm.h         |  8 ++---
 target/s390x/kvm/kvm_s390x.h |  2 +-
 hw/ppc/spapr_caps.c          |  1 +
 hw/s390x/s390-virtio-ccw.c   |  1 +
 hw/vfio/ap.c                 | 27 ++++++++---------
 hw/vfio/ccw.c                | 27 ++++++++---------
 hw/vfio/common.c             |  1 +
 hw/vfio/igd-stubs.c          | 20 +++++++++++++
 hw/vfio/igd.c                |  4 +--
 hw/vfio/iommufd.c            |  1 -
 hw/vfio/migration.c          |  1 -
 hw/vfio/pci-quirks.c         |  9 +++---
 hw/vfio/pci.c                | 57 +++++++++++++++++-------------------
 hw/vfio/platform.c           | 25 ++++++++--------
 hw/vfio/spapr.c              |  4 +--
 qom/object.c                 |  5 ++++
 hw/vfio/meson.build          | 35 +++++++++++++---------
 23 files changed, 152 insertions(+), 106 deletions(-)
 create mode 100644 hw/vfio/igd-stubs.c