Merge tag 'pull-vfio-20260113' of https://github.com/legoater/qemu into staging

vfio queue:

* Resolves build errors with gcc 16
* Adjusts the Linux headers for s390x and mshv
* Fixes endianness issue in the VFIO helper functions
* Adds support for live migration with vIOMMU when using IOMMU
  dirty tracking
* Implements a migration blocker to prevent failures when VM
  memory is too large
* Corrects an unmap_bitmap failure in the legacy VFIO backend
* Addresses a workaround for an Intel IOMMU errata.
* Implements Intel IOMMU first stage translation for passthrough
  device. Also a prerequisite work for vSVA.
* Updates documentation

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# gpg: Good signature from "Cédric Le Goater <clg@redhat.com>" [full]
# gpg:                 aka "Cédric Le Goater <clg@kaod.org>" [full]

* tag 'pull-vfio-20260113' of https://github.com/legoater/qemu: (41 commits)
  tests/rcutorture: Fix build error
  tests/qtest: Fix build error
  target/riscv: Fix build errors
  ppc/vof: Fix build error
  update-linux-headers: Remove "asm-s390/unistd_32.h"
  include/hw/hyperv: Remove unused 'struct mshv_vp_registers' definition
  util/vfio-helper: Fix endianness in PCI config read/write functions
  Workaround for ERRATA_772415_SPR17
  vfio/listener: Bypass readonly region for dirty tracking
  intel_iommu_accel: Implement get_host_iommu_quirks() callback
  hw/pci: Introduce pci_device_get_host_iommu_quirks()
  vfio/migration: Allow live migration with vIOMMU without VFs using device dirty tracking
  vfio/migration: Add migration blocker if VM memory is too large to cause unmap_bitmap failure
  vfio/listener: Add missing dirty tracking in region_del
  intel_iommu: Fix unmap_bitmap failure with legacy VFIO backend
  vfio/iommufd: Add IOMMU_HWPT_GET_DIRTY_BITMAP_NO_CLEAR flag support
  vfio: Add a backend_flag parameter to vfio_container_query_dirty_bitmap()
  vfio/container-legacy: rename vfio_dma_unmap_bitmap() to vfio_legacy_dma_unmap_get_dirty_bitmap()
  vfio/iommufd: Query dirty bitmap before DMA unmap
  vfio/iommufd: Add framework code to support getting dirty bitmap before unmap
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>