Changeset 86176 in vbox for trunk/include/iprt/nt

Timestamp:

Sep 19, 2020 3:33:04 PM (4 years ago)

Author:

vboxsync

Message:

Runtime/mp-r0drv-nt.cpp: Dynamically determine the size of the KAFFINITY_EX structure as it is not static across Windows versions (increased lately with W10 20H2)

File:

• trunk/include/iprt/nt/nt.h (modified) (1 diff)

trunk/include/iprt/nt/nt.h

@@ -607 +607 @@
     /** Reserved / aligmment padding. */
     uint32_t                Reserved;
-    /** Bitmap where one bit corresponds to a CPU. */
-    uintptr_t               Bitmap[20];
+    /** Bitmap where one bit corresponds to a CPU.
+     * @note Started at 20 entries.  W10 20H2 increased it to 32.  Must be
+     *       probed by passing a big buffer to KeInitializeAffinityEx and check
+     *       the Size afterwards. */
+    uintptr_t               Bitmap[RT_FLEXIBLE_ARRAY_IN_NESTED_UNION];
 } KAFFINITY_EX;
 typedef KAFFINITY_EX *PKAFFINITY_EX;