Changeset 104070 in vbox for trunk

Timestamp:

Mar 26, 2024 8:17:49 PM (12 months ago)

Author:

vboxsync

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

162464

Message:

VMMDev: Add a magic tail dword following the data made available by VMMDEV_TESTING_CMD_QUERY_CFG. This can be used to verify that the query was successful. bugref:9898

Location:

trunk

Files:

• include/VBox/VMMDevTesting.h (modified) (1 diff)
• include/VBox/VMMDevTesting.mac (modified) (2 diffs)
• src/VBox/Devices/VMMDev/VMMDevTesting.cpp (modified) (1 diff)

trunk/include/VBox/VMMDevTesting.h

@@ -211 +211 @@
 #define VMMDEV_TESTING_NOP_RET                  UINT32_C(0x64726962) /* bird */
 
+/** What follows the data provided by a VMMDEV_TESTING_CMD_QUERY_CFG.
+ * This can be used to verify that a config query was successful.  The value
+ * will not be split up if the read is 16-bit or 8-bit, subsequent reads (of
+ * any size) will return zero. */
+#define VMMDEV_TESTING_QUERY_CFG_OKAY_TAIL      UINT32_C(0x79616b4f) /* Okay */
+
 /** @name Low and High Locking Control Dwords
  * @{ */

trunk/include/VBox/VMMDevTesting.mac

@@ -124 +124 @@
 %define VMMDEV_TESTING_UNIT_PS_PER_PAGE         0x2d
 %define VMMDEV_TESTING_NOP_RET                  0x64726962
+%define VMMDEV_TESTING_QUERY_CFG_OKAY_TAIL      0x79616b4f
 %define VMMDEV_TESTING_LOCKED_LO_HOLD_MASK      0x0000ffff
 %define VMMDEV_TESTING_LOCKED_LO_WAIT_MASK      0xffff0000
@@ -148 +149 @@
 %define VMMDEV_TESTING_CFG_IS_NEM_WINDOWS    0x0101
 %define VMMDEV_TESTING_CFG_IS_NEM_DARWIN     0x0102
+%define VMMDEV_TESTING_CFG_THRESHOLD_NATIVE_RECOMPILER  0x0103
 %endif

trunk/src/VBox/Devices/VMMDev/VMMDevTesting.cpp

@@ -933 +933 @@
                     }
                 }
+                else if (pThis->offTestingData == pThis->cbReadableTestingData)
+                {
+                    *pu32 = VMMDEV_TESTING_QUERY_CFG_OKAY_TAIL;
+                    pThis->offTestingData += cb;
+                }
                 else
                     *pu32 = 0;