Changeset 91450 in vbox for trunk/src/VBox

Timestamp:

Sep 28, 2021 8:22:31 PM (3 years ago)

Author:

vboxsync

Message:

VMM: Use RTR0MemObjAllocLarge w/ RTMEMOBJ_ALLOC_LARGE_F_FAST for allocating a large page. bugref:5324

Location:

trunk/src/VBox/VMM

Files:

• VMMAll/PGMAllPhys.cpp (modified) (1 diff)
• VMMR0/GMMR0.cpp (modified) (2 diffs)
• include/PGMInternal.h (modified) (1 diff)

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

@@ -961 +961 @@
                fragmented; don't bother trying again. */
             LogFlow(("pgmPhysAllocLargePage failed with %Rrc\n", rc));
-            PGMSetLargePageUsage(pVM, false);
+            if (rc != VERR_TRY_AGAIN)
+                PGMSetLargePageUsage(pVM, false);
             return rc;
         }

trunk/src/VBox/VMM/VMMR0/GMMR0.cpp

@@ -3167 +3167 @@
  * @retval  VINF_SUCCESS on success.
  * @retval  VERR_NOT_OWNER if the caller is not an EMT.
- * @retval  VERR_GMM_SEED_ME if seeding via GMMR0SeedChunk is necessary.
  * @retval  VERR_GMM_HIT_GLOBAL_LIMIT if we've exhausted the available pages.
  * @retval  VERR_GMM_HIT_VM_ACCOUNT_LIMIT if we've hit the VM account limit,
  *          that is we're trying to allocate more than we've reserved.
+ * @retval  VERR_TRY_AGAIN if the host is temporarily out of large pages.
  * @returns see GMMR0AllocatePages.
  *
@@ -3228 +3228 @@
 
         RTR0MEMOBJ hMemObj;
-        rc = RTR0MemObjAllocPhysEx(&hMemObj, GMM_CHUNK_SIZE, NIL_RTHCPHYS, GMM_CHUNK_SIZE);
+        rc = RTR0MemObjAllocLarge(&hMemObj, GMM_CHUNK_SIZE, GMM_CHUNK_SIZE, RTMEMOBJ_ALLOC_LARGE_F_FAST);
         if (RT_SUCCESS(rc))
         {

trunk/src/VBox/VMM/include/PGMInternal.h

@@ -120 +120 @@
  * world switch overhead, so let's sync more.
  */
-# ifdef IN_RING0
+#ifdef IN_RING0
 /* Chose 32 based on the compile test in @bugref{4219}; 64 shows worse stats.
  * 32 again shows better results than 16; slightly more overhead in the \#PF handler,