Changeset 85865 in vbox for trunk/src/VBox/Devices/PC

Timestamp:

Aug 21, 2020 1:22:43 PM (5 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

140034

Message:

AMD IOMMU: bugref:9654 I/O APIC will use the southbridge I/O PCI address when the source PCI BDF is invalid (e.g. HPET).
For instance, this fixes booting of the Ubuntu 17.04 guest when I deliberately corrupt the ACPI checksum of the IOMMU tables.

File:

• trunk/src/VBox/Devices/PC/DevIoApic.cpp (modified) (1 diff)

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

@@ -522 +522 @@
         MSIMSG MsiIn;
         ioapicGetMsiFromApicIntr(&ApicIntr, &MsiIn);
-        Assert(PCIBDF_IS_VALID(uBusDevFn));
+        if (!PCIBDF_IS_VALID(uBusDevFn))
+            uBusDevFn = VBOX_PCI_BDF_SB_IOAPIC;
         int rcRemap = pThisCC->pIoApicHlp->pfnIommuMsiRemap(pDevIns, uBusDevFn, &MsiIn, &MsiOut);
         if (RT_SUCCESS(rcRemap))