Changeset 37452 in vbox for trunk/src/VBox/VMM/VMMR3/VMM.cpp

Timestamp:

Jun 14, 2011 6:13:48 PM (14 years ago)

Author:

vboxsync

Message:

IOM,PDMCritSect: Extended PDMCritSectEnter to handle rcBusy=VINF_SUCCESS as a request to call ring-3 to acquire a busy lock. Implemented device level locking in the MMIO code.

File:

• trunk/src/VBox/VMM/VMMR3/VMM.cpp (modified) (2 diffs)

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

@@ -450 +450 @@
     STAM_REG(pVM, &pVM->vmm.s.StatRZRetCallRing3,           STAMTYPE_COUNTER, "/VMM/RZCallR3/Misc",             STAMUNIT_OCCURENCES, "Number of Other ring-3 calls.");
     STAM_REG(pVM, &pVM->vmm.s.StatRZCallPDMLock,            STAMTYPE_COUNTER, "/VMM/RZCallR3/PDMLock",          STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PDM_LOCK calls.");
+    STAM_REG(pVM, &pVM->vmm.s.StatRZCallPDMCritSectEnter,   STAMTYPE_COUNTER, "/VMM/RZCallR3/PDMCritSectEnter", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PDM_CRITSECT_ENTER calls.");
     STAM_REG(pVM, &pVM->vmm.s.StatRZCallPGMLock,            STAMTYPE_COUNTER, "/VMM/RZCallR3/PGMLock",          STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PGM_LOCK calls.");
     STAM_REG(pVM, &pVM->vmm.s.StatRZCallPGMPoolGrow,        STAMTYPE_COUNTER, "/VMM/RZCallR3/PGMPoolGrow",      STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PGM_POOL_GROW calls.");
@@ -2072 +2073 @@
     switch (pVCpu->vmm.s.enmCallRing3Operation)
     {
+        /*
+         * Acquire a critical section.
+         */
+        case VMMCALLRING3_PDM_CRIT_SECT_ENTER:
+        {
+            pVCpu->vmm.s.rcCallRing3 = PDMR3CritSectEnterEx((PPDMCRITSECT)(uintptr_t)pVCpu->vmm.s.u64CallRing3Arg,
+                                                            true /*fCallRing3*/);
+            break;
+        }
+
         /*
          * Acquire the PDM lock.