Changeset 49774 in vbox

Timestamp:

Dec 4, 2013 3:07:09 PM (11 years ago)

Author:

vboxsync

Message:

VMM/HMVMXR0: Handle #DB from ICEBP instruction which is undocumented by Intel. This causes the undocumented "privileged software exception" interruption-type exception exit.

Location:

trunk

Files:

• include/VBox/vmm/hm_vmx.h (modified) (1 diff)
• src/VBox/VMM/VMMR0/HMVMXR0.cpp (modified) (1 diff)

trunk/include/VBox/vmm/hm_vmx.h

@@ -1493 +1493 @@
 #define VMX_EXIT_INTERRUPTION_INFO_TYPE_NMI                       2
 #define VMX_EXIT_INTERRUPTION_INFO_TYPE_HW_XCPT                   3
-#define VMX_EXIT_INTERRUPTION_INFO_TYPE_SW_INT                    4 /**< int xx */
-#define VMX_EXIT_INTERRUPTION_INFO_TYPE_DB_XCPT                   5 /**< Why are we getting this one?? */
+#define VMX_EXIT_INTERRUPTION_INFO_TYPE_SW_INT                    4
+#define VMX_EXIT_INTERRUPTION_INFO_TYPE_PRIV_SW_XCPT              5
 #define VMX_EXIT_INTERRUPTION_INFO_TYPE_SW_XCPT                   6
 /** @} */

trunk/src/VBox/VMM/VMMR0/HMVMXR0.cpp

@@ -9271 +9271 @@
     switch (uIntType)
     {
-        case VMX_EXIT_INTERRUPTION_INFO_TYPE_SW_XCPT:   /* Software exception. (#BP or #OF) */
+        case VMX_EXIT_INTERRUPTION_INFO_TYPE_PRIV_SW_XCPT:  /* Privileged software exception. (#DB from ICEBP) */
+        case VMX_EXIT_INTERRUPTION_INFO_TYPE_SW_XCPT:       /* Software exception. (#BP or #OF) */
             Assert(uVector == X86_XCPT_DB || uVector == X86_XCPT_BP || uVector == X86_XCPT_OF);
             /* no break */