Changeset 96989 in vbox for trunk/src/VBox/VMM/VMMR0

Timestamp:

Oct 5, 2022 6:16:49 AM (2 years ago)

Author:

vboxsync

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

153921

Message:

VMM/HMVMXR0: Nested VMX: bugref:10092 Let pointer to ASMBitClear for VMREAD/VMWRITE bitmaps be 32-bit aligned.

File:

• trunk/src/VBox/VMM/VMMR0/HMVMXR0.cpp (modified) (2 diffs)

trunk/src/VBox/VMM/VMMR0/HMVMXR0.cpp

@@ -2344 +2344 @@
             Assert(!(uVmcsField & VMX_VMCSFIELD_RSVD_MASK));
             Assert(uVmcsField >> 3 < cbBitmap);
-            ASMBitClear(pbVmreadBitmap  + (uVmcsField >> 3), uVmcsField & 7);
-            ASMBitClear(pbVmwriteBitmap + (uVmcsField >> 3), uVmcsField & 7);
+
+            ASMBitClear(pbVmreadBitmap,  uVmcsField & 0x7fff);
+            ASMBitClear(pbVmwriteBitmap, uVmcsField & 0x7fff);
         }
     }
@@ -2362 +2363 @@
             Assert(!(uVmcsField & VMX_VMCSFIELD_RSVD_MASK));
             Assert(uVmcsField >> 3 < cbBitmap);
-            ASMBitClear(pbVmreadBitmap + (uVmcsField >> 3), uVmcsField & 7);
+            ASMBitClear(pbVmreadBitmap, uVmcsField & 0x7fff);
         }
     }