piix_pci: wrap memory update in a transaction

[qemu.git] / hw / piix_pci.c

diff --git a/hw/piix_pci.c b/hw/piix_pci.c
index f892994eae6d02743efa87a5c0ddcf1247c68dcd..8f6ea42e2cb2270d2f7e4026a1af7e6a17578e75 100644 (file)
--- a/hw/piix_pci.c
+++ b/hw/piix_pci.c
@@ -142,6 +142,7 @@ static void i440fx_update_memory_mappings(PCII440FXState *d)
     int i, r;
     uint32_t smram;
 
+    memory_region_transaction_begin();
     update_pam(d, 0xf0000, 0x100000, (d->dev.config[I440FX_PAM] >> 4) & 3,
                &d->pam_regions[0]);
     for(i = 0; i < 12; i++) {
@@ -162,6 +163,7 @@ static void i440fx_update_memory_mappings(PCII440FXState *d)
             d->smram_enabled = false;
         }
     }
+    memory_region_transaction_commit();
 }
 
 static void i440fx_set_smm(int val, void *arg)