Changeset 79518 in vbox for trunk/src/VBox/VMM

Timestamp:

Jul 4, 2019 9:03:19 AM (6 years ago)

Author:

vboxsync

Message:

VMM/IEM: Nested VMX: bugref:9180 If we don't expose INS/OUTS VM-exit instruction information field to the guest, zero out the field, despite it can be undefined.

File:

• trunk/src/VBox/VMM/VMMAll/IEMAllCImplVmxInstr.cpp.h (modified) (2 diffs)

trunk/src/VBox/VMM/VMMAll/IEMAllCImplVmxInstr.cpp.h

@@ -3251 +3251 @@
         ExitInfo.uReason            = VMX_EXIT_IO_INSTR;
         ExitInfo.cbInstr            = cbInstr;
-        ExitInfo.InstrInfo          = ExitInstrInfo;
         ExitInfo.u64GuestLinearAddr = uGuestLinearAddr;
         ExitInfo.u64Qual            = RT_BF_MAKE(VMX_BF_EXIT_QUAL_IO_WIDTH,     cbAccess - 1)
@@ -3259 +3258 @@
                                     | RT_BF_MAKE(VMX_BF_EXIT_QUAL_IO_ENCODING,  VMX_EXIT_QUAL_IO_ENCODING_DX)
                                     | RT_BF_MAKE(VMX_BF_EXIT_QUAL_IO_PORT,      u16Port);
+        if (IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fVmxInsOutInfo)
+            ExitInfo.InstrInfo = ExitInstrInfo;
         return iemVmxVmexitInstrWithInfo(pVCpu, &ExitInfo);
     }