Changeset 92556 in vbox for trunk/include/VBox

Timestamp:

Nov 23, 2021 1:12:29 AM (3 years ago)

Author:

vboxsync

Message:

SUP,VMM: Added a fFlags parameter to SUPR3PageAlloc so we can indicate a desire for large pages and other things. HM must enable large pages when configred for the NEM code paths too. bugref:9044 bugref:5324

File:

• trunk/include/VBox/sup.h (modified) (1 diff)

trunk/include/VBox/sup.h

@@ -1389 +1389 @@
  * @returns VBox status.
  * @param   cPages          Number of pages to allocate.
+ * @param   fFlags          SUP_PAGE_ALLOC_F_XXX
  * @param   ppvPages        Where to store the base pointer to the allocated pages.
  */
-SUPR3DECL(int) SUPR3PageAlloc(size_t cPages, void **ppvPages);
+SUPR3DECL(int) SUPR3PageAlloc(size_t cPages, uint32_t fFlags, void **ppvPages);
+
+/** @name SUP_PAGE_ALLOC_F_XXX - SUPR3PageAlloc flags.
+ * @{ */
+/** Use large pages if available. */
+#define SUP_PAGE_ALLOC_F_LARGE_PAGES    RT_BIT_32(0)
+/** Advice that the allocated pages will probably be locked by
+ * RTR0MemObjLockUser later, so play nice if needed. */
+#define SUP_PAGE_ALLOC_F_FOR_LOCKING    RT_BIT_32(1)
+/** Mask of valid flags. */
+#define SUP_PAGE_ALLOC_F_VALID_MASK     UINT32_C(0x00000003)
+/** @} */
 
 /**