Changeset 24609 in vbox for trunk/src

Timestamp:

Nov 12, 2009 2:46:48 PM (15 years ago)

Author:

vboxsync

Message:

DevAPIC: Disable NMI delivery through LAPIC (Linux NMI watchdog problems).

File:

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

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

@@ -1020 +1020 @@
                 return VINF_SUCCESS;
             case APIC_DM_NMI:
-                Assert(u8Pin == 1); /* NMI should be wired to LINT1. */
+                /* External NMI should be wired to LINT1, but Linux sometimes programs
+                 * LVT0 to NMI delivery mode as well.
+                 */
                 enmType = PDMAPICIRQ_NMI;
-                break;
+                /* Currently delivering NMIs through here causes problems with NMI watchdogs
+                 * on certain Linux kernels, e.g. 64-bit CentOS 5.3. Disable NMIs for now.
+                 */
+                return VINF_SUCCESS;
             case APIC_DM_SMI:
                 enmType = PDMAPICIRQ_SMI;