Changeset 56816 in vbox for trunk/src/VBox/VMM

Timestamp:

Jul 6, 2015 1:02:48 PM (10 years ago)

Author:

vboxsync

Message:

VMM/GIM: Don't obtain the GVMM usedlock while trying to wake up an EMT from another EMT in ring-0.

File:

• trunk/src/VBox/VMM/VMMAll/GIMAllKvm.cpp (modified) (1 diff)

trunk/src/VBox/VMM/VMMAll/GIMAllKvm.cpp

@@ -92 +92 @@
                 VMCPU_FF_SET(pVCpuTarget, VMCPU_FF_UNHALT);
 #ifdef IN_RING0
-                GVMMR0SchedWakeUp(pVM, pVCpuTarget->idCpu);
+                /*
+                 * We might be here with preemption disabled or enabled (i.e. depending on thread-context hooks
+                 * being used), so don't try obtaining the GVMMR0 used lock here. See @bugref{7270} comment #148.
+                 */
+                GVMMR0SchedWakeUpEx(pVM, pVCpuTarget->idCpu, false /* fTakeUsedLock */);
 #elif defined(IN_RING3)
                 int rc2 = SUPR3CallVMMR0(pVM->pVMR0, pVCpuTarget->idCpu, VMMR0_DO_GVMM_SCHED_WAKE_UP, NULL);