Changeset 80038 in vbox

Timestamp:

Jul 29, 2019 9:30:52 AM (5 years ago)

Author:

vboxsync

Message:

DevPcBios: Properly initialize MP table floating pointer on VM reset to fix NT4 SMP reboots.

File:

• trunk/src/VBox/Devices/PC/DevPcBios.cpp (modified) (3 diffs)

trunk/src/VBox/Devices/PC/DevPcBios.cpp

@@ -196 +196 @@
     /** PXE debug logging enabled? */
     uint8_t         u8PXEDebug;
+    /** Physical address of the MP table. */
+    uint32_t        u32MPTableAddr;
     /** PXE boot PCI bus/dev/fn list. */
     uint16_t        au16NetBootDev[NET_BOOT_DEVS];
@@ -1037 +1039 @@
     PDEVPCBIOS pThis = PDMINS_2_DATA(pDevIns, PDEVPCBIOS);
     LogFlow(("pcbiosMemSetup:\n"));
+
+    if (pThis->u8IOAPIC)
+        FwCommonPlantMpsFloatPtr(pDevIns, pThis->u32MPTableAddr);
 
     /*
@@ -1602 +1607 @@
     if (pThis->u8IOAPIC)
     {
+        pThis->u32MPTableAddr = VBOX_DMI_TABLE_BASE + VBOX_DMI_TABLE_SIZE;
         FwCommonPlantMpsTable(pDevIns, pThis->au8DMIPage /* aka VBOX_DMI_TABLE_BASE */ + VBOX_DMI_TABLE_SIZE,
                               _4K - VBOX_DMI_TABLE_SIZE, pThis->cCpus);
-        FwCommonPlantMpsFloatPtr(pDevIns, VBOX_DMI_TABLE_BASE + VBOX_DMI_TABLE_SIZE);
-        LogRel(("PcBios: MPS table at %08x\n", VBOX_DMI_TABLE_BASE + VBOX_DMI_TABLE_SIZE));
+        LogRel(("PcBios: MPS table at %08x\n", pThis->u32MPTableAddr));
     }