ppc/pnv: Add an assert when calculating the RAM distribution on chips

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20210902130928.528803-3-clg@kaod.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index 03c86508d2f76787754a1d96f9961aec854fbeb5..71e45515f1362987f1d00bdc35a82ca703cef23c 100644 (file)
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -723,6 +723,8 @@ static uint64_t pnv_chip_get_ram_size(PnvMachineState *pnv, int chip_id)
         return QEMU_ALIGN_DOWN(ram_per_chip, 1 * MiB);
     }
 
+    assert(pnv->num_chips > 1);
+
     ram_per_chip = (machine->ram_size - 1 * GiB) / (pnv->num_chips - 1);
     return chip_id == 0 ? 1 * GiB : QEMU_ALIGN_DOWN(ram_per_chip, 1 * MiB);
 }