[PATCH for-7.2 v4 09/21] hw/ppc: set machine->fdt in pnv_reset()

[Daniel Henrique Barboza]

This will enable support for 'dumpdtb' and 'info fdt' HMP commands for
all powernv machines.

Cc: Cédric Le Goater <clg@kaod.org>
Cc: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
---
 hw/ppc/pnv.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index d3f77c8367..296995a600 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -608,7 +608,13 @@ static void pnv_reset(MachineState *machine)
     qemu_fdt_dumpdtb(fdt, fdt_totalsize(fdt));
     cpu_physical_memory_write(PNV_FDT_ADDR, fdt, fdt_totalsize(fdt));
 
-    g_free(fdt);
+    /*
+     * Update the machine->fdt pointer to enable support for
+     * 'dumpdtb' and 'info fdt' commands. Free the existing
+     * machine->fdt to avoid leaking it during a reset.
+     */
+    g_free(machine->fdt);
+    machine->fdt = fdt;
 }
 
 static ISABus *pnv_chip_power8_isa_create(PnvChip *chip, Error **errp)
-- 
2.37.2