[PATCH 03/12] hw/pci-host/q35: Use memory_region_set_address() also for tseg_blackhole

[Bernhard Beschow]

Deleting from and adding to the parent memory region seems to be the old
way of changing a memory region's address which is superseeded by
memory_region_set_address(). Moreover, memory_region_set_address() is
already used for tseg_window which is tseg_blackhole's counterpart in
SMM space.

Ammends: bafc90bdc594 'q35: implement TSEG'
Signed-off-by: Bernhard Beschow <shentey@gmail.com>
---
 hw/pci-host/q35.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/hw/pci-host/q35.c b/hw/pci-host/q35.c
index 3124cad60f..0384ce4350 100644
--- a/hw/pci-host/q35.c
+++ b/hw/pci-host/q35.c
@@ -404,12 +404,11 @@ static void mch_update_smram(MCHPCIState *mch)
     } else {
         tseg_size = 0;
     }
-    memory_region_del_subregion(mch->system_memory, &mch->tseg_blackhole);
+
     memory_region_set_enabled(&mch->tseg_blackhole, tseg_size);
     memory_region_set_size(&mch->tseg_blackhole, tseg_size);
-    memory_region_add_subregion_overlap(mch->system_memory,
-                                        mch->below_4g_mem_size - tseg_size,
-                                        &mch->tseg_blackhole, 1);
+    memory_region_set_address(&mch->tseg_blackhole,
+                              mch->below_4g_mem_size - tseg_size);
 
     memory_region_set_enabled(&mch->tseg_window, tseg_size);
     memory_region_set_size(&mch->tseg_window, tseg_size);
-- 
2.39.1