Changeset 847 in vbox for trunk

Timestamp:

Feb 12, 2007 1:46:39 PM (18 years ago)

Author:

vboxsync

Message:

Interrupt masking testcase. (attempt at debugging amd64 issue)

Location:

trunk/src/VBox/VMM

Files:

• VMM.cpp (modified) (1 diff)
• VMMGC/VMMGC.cpp (modified) (2 diffs)
• VMMInternal.h (modified) (1 diff)

trunk/src/VBox/VMM/VMM.cpp

@@ -2776 +2776 @@
 
         /*
+         * Interrupt masking.
+         */
+        RTPrintf("VMM: interrupt masking...\n"); RTStrmFlush(g_pStdOut); RTThreadSleep(250);
+        for (i = 0; i < 10000; i++)
+        {
+            uint64_t StartTick = ASMReadTSC();
+            rc = vmmR3DoGCTest(pVM, VMMGC_DO_TESTCASE_INTERRUPT_MASKING, 0);
+            if (rc != VINF_SUCCESS)
+            {
+                RTPrintf("VMM: Interrupt masking failed: rc=%Vrc\n", rc);
+                return rc;
+            }
+            uint64_t Ticks = ASMReadTSC() - StartTick;
+            if (Ticks < (g_pSUPGlobalInfoPage->u64CpuHz / 10000))
+                RTPrintf("Warning: Ticks=%RU64 (< %RU64)\n", Ticks, g_pSUPGlobalInfoPage->u64CpuHz / 10000);
+        }
+
+        /*
          * Interrupt forwarding.
          */

trunk/src/VBox/VMM/VMMGC/VMMGC.cpp

@@ -28 +28 @@
 #include "VMMInternal.h"
 #include <VBox/vm.h>
+#include <VBox/sup.h>
 #include <VBox/err.h>
 #include <VBox/log.h>
@@ -94 +95 @@
 
         /*
+         * Delay for ~100us.
+         */
+        case VMMGC_DO_TESTCASE_INTERRUPT_MASKING:
+        {
+            uint64_t u64MaxTicks = (g_pSUPGlobalInfoPage ? g_pSUPGlobalInfoPage->u64CpuHz : _2G) / 10000;
+            uint64_t u64StartTSC = ASMReadTSC();
+            uint64_t u64TicksNow;
+            uint32_t volatile i = 0;
+
+            do
+            {
+                /* waste some time and protect against getting stuck. */
+                for (uint32_t volatile j = 0; j < 1000; j++, i++)
+                    if (i > _2G32)
+                        return VERR_GENERAL_FAILURE;
+
+                /* check if we're done.*/
+                u64TicksNow = ASMReadTSC() - u64StartTSC;
+            } while (u64TicksNow < u64MaxTicks);
+
+            return VINF_SUCCESS;
+        }
+
+        /*
          * Trap testcases and unknown operations.
          */

trunk/src/VBox/VMM/VMMInternal.h

@@ -358 +358 @@
     /** Switching testing and profiling stub. */
     VMMGC_DO_TESTCASE_NOP,
+    /** Testcase for checking interrupt masking.. */
+    VMMGC_DO_TESTCASE_INTERRUPT_MASKING,
 
     /** The usual 32-bit hack. */