[reactos] 01/01: [NTOS:MM] Using the macro MiIsPteOnPdeBoundary(). (#2496)

[Vadim Galyant]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=b78cb36d910dd2e881844…

commit b78cb36d910dd2e881844e96fd3e2c11cacd32cd
Author:     Vadim Galyant <vgal(a)rambler.ru>
AuthorDate: Thu Apr 2 13:15:33 2020 +0300
Commit:     GitHub <noreply(a)github.com>
CommitDate: Thu Apr 2 12:15:33 2020 +0200

    [NTOS:MM] Using the macro MiIsPteOnPdeBoundary(). (#2496)
    
    The SYSTEM_PD_SIZE constant should not be used to determine the page boundary for page
tables. It is better to use the portable MiIsPteOnPdeBoundary() macro for this.
---
 ntoskrnl/mm/ARM3/section.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ntoskrnl/mm/ARM3/section.c b/ntoskrnl/mm/ARM3/section.c
index abac73207cd..7d4e45c4af8 100644
--- a/ntoskrnl/mm/ARM3/section.c
+++ b/ntoskrnl/mm/ARM3/section.c
@@ -647,7 +647,7 @@ MiSegmentDelete(IN PSEGMENT Segment)
     while (PointerPte < LastPte)
     {
         /* Check if it's time to switch master PTEs if we passed a PDE boundary */
-        if (!((ULONG_PTR)PointerPte & (PD_SIZE - 1)) &&
+        if (MiIsPteOnPdeBoundary(PointerPte) &&
             (PointerPte != Subsection->SubsectionBase))
         {
             /* Check if the master PTE is invalid */
@@ -2150,7 +2150,7 @@ MiSetProtectionOnSection(IN PEPROCESS Process,
         //
         // Check if we've crossed a PDE boundary and make the new PDE valid too
         //
-        if ((((ULONG_PTR)PointerPte) & (SYSTEM_PD_SIZE - 1)) == 0)
+        if (MiIsPteOnPdeBoundary(PointerPte))
         {
             PointerPde = MiPteToPde(PointerPte);
             MiMakePdeExistAndMakeValid(PointerPde, Process, MM_NOIRQL);