Changeset 38838 in vbox for trunk/src/VBox/VMM/include

Timestamp:

Sep 23, 2011 11:21:55 AM (13 years ago)

Author:

vboxsync

Message:

VMM,++: Try fix the async reset, suspend and power-off problems in PDM wrt conflicting VMM requests. Split them into priority requests and normal requests. The priority requests can safely be processed when PDM is doing async state change waits, the normal ones cannot. (The problem I bumped into was a unmap-chunk request from PGM being processed during PDMR3Reset, causing a recursive VMMR3EmtRendezvous deadlock.)

File:

• trunk/src/VBox/VMM/include/VMInternal.h (modified) (2 diffs)

trunk/src/VBox/VMM/include/VMInternal.h

@@ -174 +174 @@
 typedef struct VMINTUSERPERVM
 {
-    /** Head of the request queue. Atomic. */
-    volatile PVMREQ                 pReqs;
+    /** Head of the standard request queue. Atomic. */
+    volatile PVMREQ                 pNormalReqs;
+    /** Head of the priority request queue. Atomic. */
+    volatile PVMREQ                 pPriorityReqs;
     /** The last index used during alloc/free. */
     volatile uint32_t               iReqFree;
@@ -315 +317 @@
 typedef struct VMINTUSERPERVMCPU
 {
-    /** Head of the request queue. Atomic. */
-    volatile PVMREQ                 pReqs;
+    /** Head of the normal request queue. Atomic. */
+    volatile PVMREQ                 pNormalReqs;
+    /** Head of the priority request queue. Atomic. */
+    volatile PVMREQ                 pPriorityReqs;
 
     /** The handle to the EMT thread. */