Changeset 72657 in vbox for trunk/src/VBox/VMM/include

Timestamp:

Jun 22, 2018 11:05:11 AM (7 years ago)

Author:

vboxsync

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

123168

Message:

EM: Make the EMHistoryExec parameters adjustable. bugref:9198

File:

• trunk/src/VBox/VMM/include/EMInternal.h (modified) (3 diffs)

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

@@ -503 +503 @@
      * wrapped around or not.  */
     uint64_t                iNextExit;
+
+    /** Index into aExitRecords set by EMHistoryExec when returning to ring-3.
+     * This is UINT16_MAX if not armed.  */
+    uint16_t volatile       idxContinueExitRec;
     /** Whether exit optimizations are enabled or not (in general). */
     bool                    fExitOptimizationEnabled : 1;
@@ -510 +514 @@
     bool                    fExitOptimizationEnabledR0PreemptDisabled : 1;
     /** Explicit padding. */
-    bool                    afPadding2[1];
-    /** Index into aExitRecords set by EMHistoryExec when returning to ring-3.
-     * This is UINT16_MAX if not armed.  */
-    uint16_t volatile       idxContinueExitRec;
+    bool                    fPadding2;
+    /** Max number of instructions to execute. */
+    uint16_t                cHistoryExecMaxInstructions;
+    /** Min number of instructions to execute while probing. */
+    uint16_t                cHistoryProbeMinInstructions;
+    /** Max number of instructions to execute without an exit before giving up probe. */
+    uint16_t                cHistoryProbeMaxInstructionsWithoutExit;
+    uint16_t                uPadding3;
     /** Number of exit records in use. */
     uint32_t                cExitRecordUsed;
@@ -522 +530 @@
     /** Number of instructions executed by EMHistoryExec. */
     STAMCOUNTER             StatHistoryExecInstructions;
-    uint64_t                aPadding3[2];
+    uint64_t                uPadding4;
     /** Number of instructions executed by EMHistoryExec when probing. */
     STAMCOUNTER             StatHistoryProbeInstructions;