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916aa3ec69
--without-default-devices uses allnoconfig semantics: every Kconfig
entry with 'default y' is suppressed, which silently removes all virtio
devices from the binary. Write the minimal set of CONFIG_* entries we
actually need into each arch's default.mak before configure runs.
Also fix two bugs in the existing code:
- default.mak was written after ./configure, so meson never picked up
the entries; move it before the configure call
- aarch64 path used arm-softmmu (32-bit) instead of aarch64-softmmu
- make had a typo: 'nproc +--ignore' instead of 'nproc --ignore'
Common set: VIRTIO_{BLK,NET,SERIAL,RNG,BALLOON,MEM}, VHOST_USER_FS,
VIRTIO_9P, VHOST_VSOCK, VFIO_PCI, IOMMUFD. Architecture-specific:
- x86_64: Q35, VTD/VTD_ACCEL (IOMMUFD-backed), AMD_IOMMU
- aarch64: ARM_VIRT, PXB, CXL/CXL_MEM_DEVICE (required for Rubin vCXL)
- s390x: S390_CCW_VIRTIO, VIRTIO_CCW, VFIO_CCW/VFIO_AP
(VIRTIO_PCI/VFIO_PCI/IOMMUFD excluded — CCW bus, not PCI)
- ppc64le: PSERIES (VIRTIO_MEM excluded — not supported on ppc64)
Build only the system emulator binary instead of the full tool set;
ppc64le uses the 'ppc64' target name.
All four arch configs validated with minikconf --allnoconfig (exit 0).
Assisted-by: Claude Sonnet 4.6 <noreply@anthropic.com>
Signed-off-by: Zvonko Kaiser <zkaiser@nvidia.com>