[ros-diffs] [reactos] 01/02: [KMTESTS:MM] Fix failures in MmMdl test on machines with 2GB of free RAM.

[Thomas Faber]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=2f63da62e305b6609045b…

commit 2f63da62e305b6609045bf09ac0d853d610bc2fb
Author:     Thomas Faber <thomas.faber(a)reactos.org>
AuthorDate: Sat Jan 28 19:55:19 2023 -0500
Commit:     Thomas Faber <thomas.faber(a)reactos.org>
CommitDate: Sat Jan 28 23:17:52 2023 -0500

    [KMTESTS:MM] Fix failures in MmMdl test on machines with 2GB of free RAM.
---
 modules/rostests/kmtests/ntos_mm/MmMdl.c | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/modules/rostests/kmtests/ntos_mm/MmMdl.c
b/modules/rostests/kmtests/ntos_mm/MmMdl.c
index 3ee201f5e0d..e84e3b2ecab 100644
--- a/modules/rostests/kmtests/ntos_mm/MmMdl.c
+++ b/modules/rostests/kmtests/ntos_mm/MmMdl.c
@@ -1,8 +1,9 @@
 /*
- * PROJECT:         ReactOS kernel-mode tests
- * LICENSE:         LGPLv2.1+ - See COPYING.LIB in the top level directory
- * PURPOSE:         Kernel-Mode Test Suite MDL test
- * PROGRAMMER:      Thomas Faber <thomas.faber(a)reactos.org>
+ * PROJECT:     ReactOS kernel-mode tests
+ * LICENSE:     LGPL-2.1-or-later (https://spdx.org/licenses/LGPL-2.1-or-later)
+ * PURPOSE:     Kernel-Mode Test Suite MDL test
+ * COPYRIGHT:   Copyright 2015,2023 Thomas Faber (thomas.faber(a)reactos.org)
+ * COPYRIGHT:   Copyright 2017 Pierre Schweitzer (pierre(a)reactos.org)
  */
 
 #include <kmt_test.h>
@@ -104,7 +105,7 @@ TestMmAllocatePagesForMdl(VOID)
     MmFreePagesFromMdl(Mdl);
     ExFreePoolWithTag(Mdl, 0);
 
-    /* try to allocate 2 GB -- should succeed but not map */
+    /* try to allocate 2 GB -- should succeed (possibly with fewer pages) but not map */
     Mdl = MmAllocatePagesForMdl(LowAddress,
                                 HighAddress,
                                 SkipBytes,
@@ -112,12 +113,12 @@ TestMmAllocatePagesForMdl(VOID)
     ok(Mdl != NULL, "MmAllocatePagesForMdl failed for 2 GB\n");
     if (Mdl != NULL)
     {
-        ok(MmGetMdlByteCount(Mdl) != 2UL * 1024 * 1024 * 1024, "Byte count:
%lu\n", MmGetMdlByteCount(Mdl));
+        ok(MmGetMdlByteCount(Mdl) <= 2UL * 1024 * 1024 * 1024, "Byte count:
%lu\n", MmGetMdlByteCount(Mdl));
         ok(MmGetMdlVirtualAddress(Mdl) == NULL, "Virtual address: %p\n",
MmGetMdlVirtualAddress(Mdl));
         ok(!(Mdl->MdlFlags & MDL_MAPPED_TO_SYSTEM_VA), "MdlFlags:
%lx\n", Mdl->MdlFlags);
         MdlPages = MmGetMdlPfnArray(Mdl);
         MdlPageCount = ADDRESS_AND_SIZE_TO_SPAN_PAGES(MmGetMdlVirtualAddress(Mdl),
MmGetMdlByteCount(Mdl));
-        ok(MdlPageCount < 2UL * 1024 * 1024 * 1024 / PAGE_SIZE, "MdlPageCount =
%lu\n", MdlPageCount);
+        ok(MdlPageCount <= 2UL * 1024 * 1024 * 1024 / PAGE_SIZE, "MdlPageCount =
%lu\n", MdlPageCount);
         for (i = 0; i < MdlPageCount; i++)
         {
             if (MdlPages[i] == 0 ||
@@ -135,7 +136,7 @@ TestMmAllocatePagesForMdl(VOID)
         ok(SystemVa == NULL, "MmMapLockedPagesSpecifyCache succeeded for 2
GB\n");
         if (SystemVa != NULL)
             MmUnmapLockedPages(SystemVa, Mdl);
-        ok(MmGetMdlByteCount(Mdl) != 2UL * 1024 * 1024 * 1024, "Byte count:
%lu\n", MmGetMdlByteCount(Mdl));
+        ok(MmGetMdlByteCount(Mdl) <= 2UL * 1024 * 1024 * 1024, "Byte count:
%lu\n", MmGetMdlByteCount(Mdl));
         ok(MmGetMdlVirtualAddress(Mdl) == NULL, "Virtual address: %p\n",
MmGetMdlVirtualAddress(Mdl));
         ok(!(Mdl->MdlFlags & MDL_MAPPED_TO_SYSTEM_VA), "MdlFlags:
%lx\n", Mdl->MdlFlags);
         MmFreePagesFromMdl(Mdl);