Changeset 92246 in vbox for trunk/src/VBox/Runtime/r0drv/nt/memobj-r0drv-nt.cpp

Timestamp:

Nov 6, 2021 3:10:49 AM (3 years ago)

Author:

vboxsync

Message:

IPRT/RTR0MemObj: Added RTR0MemObjWasZeroInitialized and a couple of flags with which the backend can feed it the necessary info. It would be good to try avoid zeroing memory twice when we can. bugref:10093

File:

• trunk/src/VBox/Runtime/r0drv/nt/memobj-r0drv-nt.cpp (modified) (7 diffs)

trunk/src/VBox/Runtime/r0drv/nt/memobj-r0drv-nt.cpp

@@ -283 +283 @@
                         if (pMemNt)
                         {
+                            pMemNt->Core.fFlags |= RTR0MEMOBJ_FLAGS_ZERO_AT_ALLOC;
                             pMemNt->fAllocatedPagesForMdl = true;
                             pMemNt->cMdls = 1;
@@ -333 +334 @@
             if (pMemNt)
             {
+                pMemNt->Core.fFlags |= RTR0MEMOBJ_FLAGS_UNINITIALIZED_AT_ALLOC;
                 pMemNt->cMdls = 1;
                 pMemNt->apMdls[0] = pMdl;
@@ -441 +443 @@
                         if (pMemNt)
                         {
+                            pMemNt->Core.fFlags |= RTR0MEMOBJ_FLAGS_ZERO_AT_ALLOC;
                             pMemNt->fAllocatedPagesForMdl = true;
                             pMemNt->cMdls = 1;
@@ -525 +528 @@
                         if (pMemNt)
                         {
+                            pMemNt->Core.fFlags |= RTR0MEMOBJ_FLAGS_ZERO_AT_ALLOC;
                             pMemNt->fAllocatedPagesForMdl = true;
                             pMemNt->cMdls = 1;
@@ -607 +611 @@
         if (pMemNt)
         {
+            pMemNt->Core.fFlags |= RTR0MEMOBJ_FLAGS_UNINITIALIZED_AT_ALLOC;
             pMemNt->Core.u.Cont.Phys = (RTHCPHYS)*MmGetMdlPfnArray(pMdl) << PAGE_SHIFT;
             pMemNt->cMdls = 1;
@@ -668 +673 @@
                     if (pMemNt)
                     {
+                        pMemNt->Core.fFlags |= RTR0MEMOBJ_FLAGS_ZERO_AT_ALLOC;
                         pMemNt->Core.u.Phys.fAllocated = true;
                         pMemNt->Core.u.Phys.PhysBase = (RTHCPHYS)paPfns[0] << PAGE_SHIFT;
@@ -705 +711 @@
                 if (pMemNt)
                 {
+                    pMemNt->Core.fFlags |= RTR0MEMOBJ_FLAGS_ZERO_AT_ALLOC;
                     pMemNt->fAllocatedPagesForMdl = true;
                     pMemNt->cMdls = 1;