Changeset 21282 in vbox for trunk/include/iprt

Timestamp:

Jul 6, 2009 11:43:36 PM (16 years ago)

Author:

vboxsync

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

49619

Message:

iprt/mem.h: Added RTR0MemAreKernelAndUserRangesDifferent.

File:

• trunk/include/iprt/mem.h (modified) (3 diffs)

trunk/include/iprt/mem.h

@@ -258 +258 @@
 RTR0DECL(void) RTMemContFree(void *pv, size_t cb) RT_NO_THROW;
 
-
 /**
  * Copy memory from an user mode buffer into a kernel buffer.
@@ -294 +293 @@
  *
  * @remarks Some systems may have overlapping kernel and user address ranges.
- *          One prominent example of this is the x86 version of Mac OS X.
+ *          One prominent example of this is the x86 version of Mac OS X. Use
+ *          RTR0MemAreKernelAndUserRangesDifferent() to check.
  */
 RTR0DECL(bool) RTR0MemUserIsValidAddr(RTR3PTR R3Ptr);
@@ -309 +309 @@
  *
  * @remarks Some systems may have overlapping kernel and user address ranges.
- *          One prominent example of this is the x86 version of Mac OS X.
+ *          One prominent example of this is the x86 version of Mac OS X. Use
+ *          RTR0MemAreKernelAndUserRangesDifferent() to check.
  */
 RTR0DECL(bool) RTR0MemKernelIsValidAddr(void *pv);
+
+/**
+ * Are user mode and kernel mode address ranges distinctly different.
+ *
+ * This determins whether RTR0MemKernelIsValidAddr and RTR0MemUserIsValidAddr
+ * can be used for deciding whether some arbitrary address is a user mode or a
+ * kernel mode one.
+ *
+ * @returns true if they are, false if not.
+ */
+RTR0DECL(bool) RTR0MemAreKernelAndUserRangesDifferent(void);
 
 #endif /* IN_RING0 */