By default mingw-gcc is trying to pack structures the way to preserve binary compatibility with MS Visual C what leads to incorrect and unexpected padding in the PCI bus ranges property of the sPAPR PHB.
The patch replaces __attribute__((packed)) with more strict QEMU_PACKED which actually is __attribute__((gcc_struct, packed)) on Windows. Signed-off-by: Alexey Kardashevskiy <a...@ozlabs.ru> --- hw/spapr_pci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/spapr_pci.c b/hw/spapr_pci.c index b3032d2..0261d2e 100644 --- a/hw/spapr_pci.c +++ b/hw/spapr_pci.c @@ -418,7 +418,7 @@ int spapr_populate_pci_dt(sPAPRPHBState *phb, uint64_t child; uint64_t parent; uint64_t size; - } __attribute__((packed)) ranges[] = { + } QEMU_PACKED ranges[] = { { cpu_to_be32(b_ss(1)), cpu_to_be64(0), cpu_to_be64(phb->io_win_addr), -- 1.7.10.4