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charset="utf-8" Currently, the machine dtb is generated in pnv_init(), before all devices are fully initialized. This can result in an incomplete dtb for the system, as seen in bug [1]. Fix this by deferring dtb generation until machine initialization is comple= te, using the machine_init_done_notifier hook. [1] https://lore.kernel.org/all/20260323231612.GA2637687@ax162/ Cc: Aditya Gupta Cc: Harsh Prateek Bora Cc: BALATON Zoltan Cc: qemu-stable@nongnu.org Reported-by: Nathan Chancellor Suggested-by: Peter Maydell Fixes: a16d4c2f162a86d ("ppc/pnv: fix dumpdtb option") Signed-off-by: Shivang Upadhyay Reviewed-by: Peter Maydell Tested-by: Nathan Chancellor --- hw/ppc/pnv.c | 17 +++++++++++++---- include/hw/ppc/pnv.h | 2 ++ 2 files changed, 15 insertions(+), 4 deletions(-) diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c index 7e54b6bc60..f13b2e3db8 100644 --- a/hw/ppc/pnv.c +++ b/hw/ppc/pnv.c @@ -984,6 +984,17 @@ static uint64_t pnv_chip_get_ram_size(PnvMachineState = *pnv, int chip_id) return chip_id =3D=3D 0 ? 1 * GiB : QEMU_ALIGN_DOWN(ram_per_chip, 1 * = MiB); } =20 +static void pnv_machine_init_done(Notifier *notifier, void *data) +{ + PnvMachineState *pnv =3D container_of(notifier, PnvMachineState, machi= ne_init_done); + MachineState *machine =3D MACHINE(pnv); + + if (!machine->fdt) { + machine->fdt =3D pnv_dt_create(machine); + _FDT((fdt_pack(machine->fdt))); + } +} + static void pnv_init(MachineState *machine) { const char *bios_name =3D machine->firmware ?: FW_FILE_NAME; @@ -1244,10 +1255,8 @@ static void pnv_init(MachineState *machine) pmc->i2c_init(pnv); } =20 - if (!machine->fdt) { - machine->fdt =3D pnv_dt_create(machine); - _FDT((fdt_pack(machine->fdt))); - } + pnv->machine_init_done.notify =3D pnv_machine_init_done; + qemu_add_machine_init_done_notifier(&pnv->machine_init_done); } =20 /* diff --git a/include/hw/ppc/pnv.h b/include/hw/ppc/pnv.h index 24f8843a40..90028f974d 100644 --- a/include/hw/ppc/pnv.h +++ b/include/hw/ppc/pnv.h @@ -111,6 +111,8 @@ struct PnvMachineState { =20 bool big_core; bool lpar_per_core; + + Notifier machine_init_done; }; =20 PnvChip *pnv_get_chip(PnvMachineState *pnv, uint32_t chip_id); --=20 2.53.0