[PATCH v2 0/2] hvf: map granule abstraction and configurable IPA

[Lucas Amaral <lucaaamaral@gmail.com>]

macOS ARM64 requires 16KB alignment for hv_vm_map(), but the guest
kernel uses 4KB pages.  When virtio-gpu blob BAR offsets are not
16KB-aligned, the interior-mapping path fails, falling back to slow
MMIO emulation.

This series introduces:

1. A map granule abstraction (hvf_set/get_map_granule) replacing
   hardcoded qemu_real_host_page_size() calls in HVF memory mapping.
   Non-aligned regions return early instead of proceeding with
   add=false (which attempted an unnecessary unmap).
   An 'ipa-granule' property (auto, 4k, 16k) on the HVF accelerator
   object allows opt-in configuration:

     -accel hvf,ipa-granule=4k

2. macOS 26 IPA granule support via hv_vm_config_set_ipa_granule(),
   reading the ipa-granule property to select HV_IPA_GRANULE_4KB or
   HV_IPA_GRANULE_16KB.  Falls back with a warning on macOS < 26.
   Warns if the resolved granule exceeds the guest page size (Venus
   blob mapping safety check).

Dependencies: none.

Changes v1 → v2 (Mohamed Mosaad review):
- Replace hardcoded 4KB with configurable ipa-granule property
  (auto, 4k, 16k) on the HVF accelerator object.
- 'auto' defaults to host page size; explicit values opt in.
- Add fallback warning when macOS < 26 can't honor the request.
- Add Venus blob mapping safety warning (moved from venus-nogl
  series to keep cross-series independence).
- Use KiB constants instead of magic numbers.

Lucas Amaral (2):
  accel/hvf: introduce map granule abstraction and IPA property
  target/arm/hvf: configure IPA granule on macOS 26

 accel/hvf/hvf-all.c      | 67 ++++++++++++++++++++++++++++++++++++++--
 include/system/hvf.h     | 15 +++++++++
 include/system/hvf_int.h |  1 +
 target/arm/hvf/hvf.c     | 49 +++++++++++++++++++++++++++++
 4 files changed, 129 insertions(+), 3 deletions(-)

--
2.52.0