vbox的更動 13393 路徑 trunk/src/VBox/VMM/VMMAll/IOMAllMMIO.cpp

時間撮記:

2008-10-20 下午01:26:44 (16 年 以前)

作者:

vboxsync

訊息:

Updates for physical page aliases

檔案:

• trunk/src/VBox/VMM/VMMAll/IOMAllMMIO.cpp (修改) (2 筆差異)

trunk/src/VBox/VMM/VMMAll/IOMAllMMIO.cpp

@@ -1762 +1762 @@
     AssertRCReturn(rc, rc);
 
+    /* Prefetch it as it's now marked as not present and our trap handler will
+     * still call the access handler.
+     */
+    rc = PGMPrefetchPage(pVM, (RTGCPTR)GCPhys);
+    AssertRC(rc);
+
     /* Mark it as writable and present so reads and writes no longer fault. */
-    rc = PGMShwSetPage(pVM, (RTGCPTR)GCPhys, PAGE_SIZE, fPageFlags);
+    rc = PGMShwModifyPage(pVM, (RTGCPTR)GCPhys, 1, fPageFlags, ~fPageFlags);
     AssertRC(rc);
 
@@ -1806 +1812 @@
 
         /* Mark it as not present again to intercept all read and write access. */
-        rc = PGMShwSetPage(pVM, (RTGCPTR)GCPhys, PAGE_SIZE, 0);
+        rc = PGMShwModifyPage(pVM, (RTGCPTR)GCPhys, 1, 0, ~(uint64_t)(X86_PTE_RW|X86_PTE_P));
         AssertRC(rc);