Changeset 45276 in vbox for trunk/include/VBox/vmm

Timestamp:

Apr 2, 2013 8:17:11 AM (12 years ago)

Author:

vboxsync

Message:

Ring-1 compression patches, courtesy of trivirt AG:

• main: diff to remove the hwvirt requirement for QNX
• rem: diff for dealing with raw ring 0/1 selectors and general changes to allowed guest execution states
• vmm: changes for using the guest's TSS selector index as our hypervisor TSS selector (makes str safe) (VBOX_WITH_SAFE_STR )
• vmm: changes for dealing with guest ring 1 code (VBOX_WITH_RAW_RING1)
• vmm: change to emulate smsw in RC/R0 (QNX uses this old style instruction a lot so going to qemu for emulation is very expensive)
• vmm: change (hack) to kick out patm virtual handlers in case they conflict with guest GDT/TSS write monitors; we should allow multiple handlers per page, but that change would be rather invasive

Location:

trunk/include/VBox/vmm

Files:

• cpum.h (modified) (1 diff)
• em.h (modified) (1 diff)
• selm.h (modified) (1 diff)
• vm.h (modified) (2 diffs)
• vm.mac (modified) (2 diffs)

trunk/include/VBox/vmm/cpum.h

@@ -485 +485 @@
 DECLASM(void)           CPUMGCCallV86Code(PCPUMCTXCORE pRegFrame);
 
+
+/**
+ * Get the current privilege level of the guest.
+ *
+ * @returns CPL
+ * @param   pVCpu       The current virtual CPU.
+ * @param   pRegFrame   Pointer to the register frame.
+ */
+VMMDECL(uint32_t)       CPUMRCGetGuestCPL(PVMCPU pVCpu, PCPUMCTXCORE pRegFrame);
+
+#ifdef VBOX_WITH_RAW_RING1
+/**
+ * Transforms the guest CPU state to raw-ring mode.
+ *
+ * This function will change the any of the cs and ss register with DPL=0 to DPL=1.
+ *
+ * @returns VBox status. (recompiler failure)
+ * @param   pVCpu       Pointer to the VMCPU.
+ * @param   pCtxCore    The context core (for trap usage).
+ * @see     @ref pg_raw
+ */
+VMMDECL(void)         CPUMRCRecheckRawState(PVMCPU pVCpu, PCPUMCTXCORE pCtxCore);
+#endif
+
 /** @} */
 #endif /* IN_RC */

trunk/include/VBox/vmm/em.h

@@ -133 +133 @@
 #define EMIsRawRing0Enabled(pVM) (!(pVM)->fRecompileSupervisor)
 
+#ifdef VBOX_WITH_RAW_RING1
+/**
+ * Checks if raw ring-1 execute mode is enabled.
+ *
+ * @returns true if enabled.
+ * @returns false if disabled.
+ * @param   pVM         The VM to operate on.
+ */
+#define EMIsRawRing1Enabled(pVM) ((pVM)->fRawRing1Enabled)
+#else
+#define EMIsRawRing1Enabled(pVM) false
+#endif
+
 /**
  * Checks if execution with hardware assisted virtualization is enabled.

trunk/include/VBox/vmm/selm.h

@@ -107 +107 @@
 VMMR3DECL(bool)         SELMR3CheckTSS(PVM pVM);
 VMMR3DECL(int)          SELMR3DebugCheck(PVM pVM);
+#ifdef VBOX_WITH_SAFE_STR
+VMMR3DECL(bool)         SELMR3CheckShadowTR(PVM pVM);
+#endif
+
 /** @def SELMR3_DEBUG_CHECK
  * Invokes SELMR3DebugCheck in stricts builds. */

trunk/include/VBox/vmm/vm.h

@@ -843 +843 @@
     /** Whether to recompile supervisor mode code or run it raw/hm. */
     bool                        fRecompileSupervisor;
+    /** Whether raw mode supports ring-1 code or not. */
+    bool                        fRawRing1Enabled;
     /** PATM enabled flag.
      * This is placed here for performance reasons. */
@@ -862 +864 @@
 
     /** Alignment padding.. */
-    uint32_t                    uPadding1;
+    uint8_t                     uPadding1[3];
 
     /** @name Debugging

trunk/include/VBox/vmm/vm.mac

@@ -59 +59 @@
     .fRecompileUser         resb 1
     .fRecompileSupervisor   resb 1
+    .fRawRing1Enabled       resb 1
     .fPATMEnabled           resb 1
     .fCSAMEnabled           resb 1
@@ -66 +67 @@
     .fUseLargePages         resb 1
 
-    .uPadding1              resd 1
+    .uPadding1              resb 3
 
     .hTraceBufRC            RTRCPTR_RES 1