Changeset 21644 in vbox for trunk/include

Timestamp:

Jul 16, 2009 11:54:31 AM (16 years ago)

Author:

vboxsync

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

50176

Message:

Register guest allocated memory (locked & executable) for patching purposes.

Location:

trunk/include/VBox

Files:

• VMMDev.h (modified) (3 diffs)
• vmm.h (modified) (1 diff)

trunk/include/VBox/VMMDev.h

@@ -131 +131 @@
     VMMDevReq_GetHypervisorInfo          = 20,
     VMMDevReq_SetHypervisorInfo          = 21,
+    VMMDevReq_SetPatchMemory             = 22,
+    VMMDevReq_ClearPatchMemory           = 23,
     VMMDevReq_SetPowerStatus             = 30,
     VMMDevReq_AcknowledgeEvents          = 41,
@@ -458 +460 @@
 } VMMDevReqHypervisorInfo;
 AssertCompileSize(VMMDevReqHypervisorInfo, 24+8);
+
+/** @name Default patch memory size .
+ * Used by VMMDevReq_SetPatchMemory and VMMDevReq_ClearPatchMemory.
+ * @{ */
+#define VMMDEV_GUEST_DEFAULT_PATCHMEM_SIZE          8192
+/** @} */
+
+/**
+ * Patching memory structure. (locked executable & read-only page from the guest's perspective)
+ *
+ * Used by VMMDevReq_SetPatchMemory and VMMDevReq_ClearPatchMemory
+ */
+typedef struct
+{
+    /** Header. */
+    VMMDevRequestHeader header;
+    /** Guest virtual address of the patching page(s). */
+    RTGCPTR             pPatchMem;
+    /** Patch page size in bytes. */
+    uint32_t            cbPatchMem;
+} VMMDevReqPatchMemory;
+AssertCompileSize(VMMDevReqPatchMemory, 24+12);
 
 
@@ -1380 +1404 @@
         case VMMDevReq_SetHypervisorInfo:
             return sizeof(VMMDevReqHypervisorInfo);
+        case VMMDevReq_SetPatchMemory:
+        case VMMDevReq_ClearPatchMemory:
+            return sizeof(VMMDevReqPatchMemory);
         case VMMDevReq_SetPowerStatus:
             return sizeof(VMMDevPowerStateRequest);

trunk/include/VBox/vmm.h

@@ -192 +192 @@
 VMMR3DECL(void)     VMMR3SendSipi(PVM pVM, VMCPUID idCpu, uint32_t uVector);
 VMMR3DECL(void)     VMMR3SendInitIpi(PVM pVM, VMCPUID idCpu);
+VMMR3DECL(int)      VMMR3SetPatchMemory(PVM pVM, RTGCPTR pPatchMem, unsigned cbPatchMem);
+VMMR3DECL(int)      VMMR3ClearPatchMemory(PVM pVM, RTGCPTR pPatchMem, unsigned cbPatchMem);
 VMMR3DECL(int)      VMMR3AtomicExecuteHandler(PVM pVM, PFNATOMICHANDLER pfnHandler, void *pvUser);
 VMMR3DECL(int)      VMMR3EmtRendezvous(PVM pVM, uint32_t fFlags, PFNVMMEMTRENDEZVOUS pfnRendezvous, void *pvUser);