X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/fe8ab488e9161c46dd9885d58fc52996dc0249ff..04b8595b18b1b41ac7a206e4b3d51a635f8413d7:/iokit/Kernel/IOMemoryDescriptor.cpp

diff --git a/iokit/Kernel/IOMemoryDescriptor.cpp b/iokit/Kernel/IOMemoryDescriptor.cpp
index f6ab8e93b..0c7744386 100644
--- a/iokit/Kernel/IOMemoryDescriptor.cpp
+++ b/iokit/Kernel/IOMemoryDescriptor.cpp
@@ -743,10 +743,8 @@ IOGeneralMemoryDescriptor::memoryReferenceMap(
     cacheMode = ((options & kIOMapCacheMask) >> kIOMapCacheShift);
     if (kIODefaultCache != cacheMode)
     {
-	// VM system requires write access to change cache mode
-        prot |= VM_PROT_WRITE;
-        // update named entries cache mode
-	memEntryCacheMode = (MAP_MEM_ONLY | prot | vmProtForCacheMode(cacheMode));
+	// VM system requires write access to update named entry cache mode
+	memEntryCacheMode = (MAP_MEM_ONLY | VM_PROT_WRITE | prot | vmProtForCacheMode(cacheMode));
     }
 
     if (_task)