Changeset 104064 in vbox for trunk/src/VBox

Timestamp:

Mar 26, 2024 2:53:59 PM (12 months ago)

Author:

vboxsync

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

162457

Message:

VMM/IEM: Made the IEMTB::cUsage value the native recompilation is done at configurable. bugref:10370

Location:

trunk/src/VBox/VMM

Files:

• VMMAll/IEMAllThrdRecompiler.cpp (modified) (1 diff)
• VMMR3/IEMR3.cpp (modified) (2 diffs)
• include/IEMInternal.h (modified) (1 diff)

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

@@ -657 +657 @@
                     pTb->cUsed++;
 #ifdef VBOX_WITH_IEM_NATIVE_RECOMPILER
-                    if ((pTb->fFlags & IEMTB_F_TYPE_NATIVE) || pTb->cUsed != 16)
+                    if ((pTb->fFlags & IEMTB_F_TYPE_NATIVE) || pTb->cUsed != pVCpu->iem.s.uTbNativeRecompileAtUsedCount)
                     {
                         Log10(("TB lookup: fFlags=%#x GCPhysPc=%RGp idxHash=%#x: %p (@ %d / %d)\n",

trunk/src/VBox/VMM/VMMR3/IEMR3.cpp

@@ -182 +182 @@
                           cbInitialExec, cbInitialExec, cbMaxExec);
 
+    /** @cfgm{/IEM/NativeRecompileAtUsedCount, uint32_t, 16}
+     * The translation block use count value to do native recompilation at. */
+    uint32_t uTbNativeRecompileAtUsedCount = 16;
+    rc = CFGMR3QueryU32Def(pIem, "NativeRecompileAtUsedCount", &uTbNativeRecompileAtUsedCount, 16);
+    AssertLogRelRCReturn(rc, rc);
+
 #endif /* VBOX_WITH_IEM_RECOMPILER*/
 
@@ -260 +266 @@
         while (iMemMap-- > 0)
             pVCpu->iem.s.aMemMappings[iMemMap].fAccess = IEM_ACCESS_INVALID;
+
+#ifdef VBOX_WITH_IEM_RECOMPILER
+        /*
+         * Distribute recompiler configuration.
+         */
+        pVCpu->iem.s.uTbNativeRecompileAtUsedCount = uTbNativeRecompileAtUsedCount;
+#endif
     }
 

trunk/src/VBox/VMM/include/IEMInternal.h

@@ -1825 +1825 @@
     /** The virtual sync time at the last timer poll call. */
     uint32_t                msRecompilerPollNow;
+    /** The IEMTB::cUsed value when to attempt native recompilation of a TB. */
+    uint32_t                uTbNativeRecompileAtUsedCount;
     /** The IEM_CIMPL_F_XXX mask for the current instruction. */
     uint32_t                fTbCurInstr;
     /** The IEM_CIMPL_F_XXX mask for the previous instruction. */
     uint32_t                fTbPrevInstr;
-    /** Previous GCPhysInstrBuf value - only valid if fTbCrossedPage is set.   */
-    RTGCPHYS                GCPhysInstrBufPrev;
     /** Strict: Tracking skipped EFLAGS calculations.  Any bits set here are
      *  currently not up to date in EFLAGS. */
     uint32_t                fSkippingEFlags;
-    uint32_t                au32Padding[1];
+    /** Previous GCPhysInstrBuf value - only valid if fTbCrossedPage is set.   */
+    RTGCPHYS                GCPhysInstrBufPrev;
     /** Pointer to the ring-3 TB allocator for this EMT. */
     R3PTRTYPE(PIEMTBALLOCATOR) pTbAllocatorR3;