Changeset 27023 in vbox for trunk/include

Timestamp:

Mar 4, 2010 1:32:45 PM (15 years ago)

Author:

vboxsync

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

58333

Message:

Guest Additions: memory ballooning for guests without support for RTR0MemObjAllocPhysNC()

Location:

trunk/include/VBox

Files:

• VBoxGuest.h (modified) (1 diff)
• VBoxGuestLib.h (modified) (1 diff)
• VMMDev.h (modified) (1 diff)

trunk/include/VBox/VBoxGuest.h

@@ -272 +272 @@
 /** IOCTL to VBoxGuest to check memory ballooning.
  * The guest kernel module / device driver will ask the host for the current size of
- * the balloon and adjust the size or return with VERR_NO_PHYS_MEMORY. In the latter
- * case the user-level application is responsible for allocating memory in userland
- * and call the kernel module again doing VBOXGUEST_IOCTL_CHANGE_BALLOON */
+ * the balloon and adjust the size. Or it will set fHandledInR0 = false and R3 is
+ * responsible for allocating memory and calling R0 (VBOXGUEST_IOCTL_CHANGE_BALLOON). */
 #define VBOXGUEST_IOCTL_CHECK_BALLOON               VBOXGUEST_IOCTL_CODE_(7, 100)
+
+typedef struct VBoxGuestCheckBalloonInfo
+{
+    /** the size of the balloon in chunks of 1MB */
+    uint32_t cBalloonChunks;
+    /** false = handled in R0, no further action required.
+     *   true = allocate balloon memory in R3. */
+    uint32_t fHandleInR3;
+} VBoxGuestCheckBalloonInfo;
+AssertCompileSize(VBoxGuestCheckBalloonInfo, 8);
 
 

trunk/include/VBox/VBoxGuestLib.h

@@ -467 +467 @@
 /** @name Memory ballooning
  * @{ */
-VBGLR3DECL(int) VbglR3MemBalloonRefresh(uint32_t *pu32Size);
+VBGLR3DECL(int) VbglR3MemBalloonRefresh(uint32_t *pcChunks, bool *pfHandleInR3);
 VBGLR3DECL(int) VbglR3MemBalloonChange(void *pv, bool fInflate);
 /** @}  */

trunk/include/VBox/VMMDev.h

@@ -689 +689 @@
     VMMDevRequestHeader header;
     /** Balloon size in megabytes. */
-    uint32_t            u32BalloonSize;
+    uint32_t            cBalloonChunks;
     /** Guest ram size in megabytes. */
-    uint32_t            u32PhysMemSize;
+    uint32_t            cPhysMemChunks;
     /** Setting this to VMMDEV_EVENT_BALLOON_CHANGE_REQUEST indicates that the
      * request is a response to that event.