[PATCH qemu] spapr: Rename RTAS_MAX_ADDR to FDT_MAX_ADDR

[Alexey Kardashevskiy <aik@ozlabs.ru>]

SLOF instantiates RTAS since
744a928ccee9 ("spapr: Stop providing RTAS blob")
so the max address applies to the FDT only.

This renames the macro and fixes up the comment.

This should not cause any behavioral change.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
---
 hw/ppc/spapr.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 73a06df3b1b1..1e18a0a62839 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -100,7 +100,7 @@
  *
  * We load our kernel at 4M, leaving space for SLOF initial image
  */
-#define RTAS_MAX_ADDR           0x80000000 /* RTAS must stay below that */
+#define FDT_MAX_ADDR            0x80000000 /* FDT must stay below that */
 #define FW_MAX_SIZE             0x400000
 #define FW_FILE_NAME            "slof.bin"
 #define FW_OVERHEAD             0x2800000
@@ -1617,11 +1617,11 @@ static void spapr_machine_reset(MachineState *machine)
     spapr_clear_pending_events(spapr);
 
     /*
-     * We place the device tree and RTAS just below either the top of the RMA,
+     * We place the device tree just below either the top of the RMA,
      * or just below 2GB, whichever is lower, so that it can be
      * processed with 32-bit real mode code if necessary
      */
-    fdt_addr = MIN(spapr->rma_size, RTAS_MAX_ADDR) - FDT_MAX_SIZE;
+    fdt_addr = MIN(spapr->rma_size, FDT_MAX_ADDR) - FDT_MAX_SIZE;
 
     fdt = spapr_build_fdt(spapr, true, FDT_MAX_SIZE);
 
@@ -2694,7 +2694,7 @@ static void spapr_machine_init(MachineState *machine)
     spapr->rma_size = spapr_rma_size(spapr, &error_fatal);
 
     /* Setup a load limit for the ramdisk leaving room for SLOF and FDT */
-    load_limit = MIN(spapr->rma_size, RTAS_MAX_ADDR) - FW_OVERHEAD;
+    load_limit = MIN(spapr->rma_size, FDT_MAX_ADDR) - FW_OVERHEAD;
 
     /*
      * VSMT must be set in order to be able to compute VCPU ids, ie to
-- 
2.17.1