Changeset 72617 in vbox for trunk

Timestamp:

Jun 19, 2018 3:38:27 PM (7 years ago)

Author:

vboxsync

Message:

VMM: LogRel some ring-0 preemption details in ring-3.

Location:

trunk/src/VBox/VMM

Files:

• VMMR0/VMMR0.cpp (modified) (1 diff)
• VMMR3/VMM.cpp (modified) (1 diff)
• include/VMMInternal.h (modified) (1 diff)

trunk/src/VBox/VMM/VMMR0/VMMR0.cpp

@@ -483 +483 @@
                             {
                                 GVMMR0DoneInitVM(pGVM);
+
+                                /*
+                                 * Collect a bit of info for the VM release log.
+                                 */
+                                pVM->vmm.s.fIsPreemptPendingApiTrusty = RTThreadPreemptIsPendingTrusty();
+                                pVM->vmm.s.fIsPreemptPossible         = RTThreadPreemptIsPossible();;
+
                                 VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
                                 return rc;

trunk/src/VBox/VMM/VMMR3/VMM.cpp

@@ -606 +606 @@
         LogRel(("VMM: Thread-context hooks unavailable\n"));
 
+    /* Log RTThreadPreemptIsPendingTrusty() and RTThreadPreemptIsPossible() results. */
+    if (pVM->vmm.s.fIsPreemptPendingApiTrusty)
+        LogRel(("VMM: RTThreadPreemptIsPending() can be trusted\n"));
+    else
+        LogRel(("VMM: Warning! RTThreadPreemptIsPending() cannot be trusted!  Need to update kernel info?\n"));
+    if (pVM->vmm.s.fIsPreemptPossible)
+        LogRel(("VMM: Kernel preemption is possible.\n"));
+    else
+        LogRel(("VMM: Kernel preemption is not possible it seems.\n"));
+
     /*
      * Send all EMTs to ring-0 to get their logger initialized.

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

@@ -332 +332 @@
 
     /** @} */
-    bool                        afAlignment2[HC_ARCH_BITS == 32 ? 7 : 3]; /**< Alignment padding. */
+
+    /** RTThreadPreemptIsPendingTrusty() result, set by vmmR0InitVM() for
+     * release logging purposes. */
+    bool                        fIsPreemptPendingApiTrusty : 1;
+    /** The RTThreadPreemptIsPossible() result,  set by vmmR0InitVM() for
+     * release logging purposes.  */
+    bool                        fIsPreemptPossible : 1;
+
+    bool                        afAlignment2[HC_ARCH_BITS == 32 ? 6 : 2]; /**< Alignment padding. */
 
     /** Buffer for storing the standard assertion message for a ring-0 assertion.