Changeset 40474 in vbox for trunk/src/VBox

Timestamp:

Mar 15, 2012 10:44:33 AM (13 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

76844

Message:

SUPDrv: Fix linux kernel panic in MP offline case caused due to write reordering (#6110).

File:

• trunk/src/VBox/HostDrivers/Support/SUPDrv.c (modified) (2 diffs)

trunk/src/VBox/HostDrivers/Support/SUPDrv.c

@@ -5065 +5065 @@
     supdrvGipInitCpu(pGip, &pGip->aCPUs[i], u64NanoTS);
     idApic = ASMGetApicId();
-    ASMAtomicUoWriteU16(&pGip->aCPUs[i].idApic,  idApic);
-    ASMAtomicUoWriteS16(&pGip->aCPUs[i].iCpuSet, (int16_t)iCpuSet);
-    ASMAtomicUoWriteSize(&pGip->aCPUs[i].idCpu,  idCpu);
+    ASMAtomicWriteU16(&pGip->aCPUs[i].idApic,  idApic);
+    ASMAtomicWriteS16(&pGip->aCPUs[i].iCpuSet, (int16_t)iCpuSet);
+    ASMAtomicWriteSize(&pGip->aCPUs[i].idCpu,  idCpu);
 
     /*
@@ -5350 +5350 @@
     pCpu->u64TSC             = ASMReadTSC();
 
-    pCpu->enmState           = SUPGIPCPUSTATE_INVALID;
-    pCpu->idCpu              = NIL_RTCPUID;
-    pCpu->iCpuSet            = -1;
-    pCpu->idApic             = UINT16_MAX;
+    ASMAtomicWriteSize(&pCpu->enmState, SUPGIPCPUSTATE_INVALID);
+    ASMAtomicWriteSize(&pCpu->idCpu,    NIL_RTCPUID);
+    ASMAtomicWriteS16(&pCpu->iCpuSet,   -1);
+    ASMAtomicWriteU16(&pCpu->idApic,    UINT16_MAX);
 
     /*