Revert r32994 and add a comment to explain the intention. Thanks Ingo for the

clarification.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33001 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/system/kernel/arch/x86/arch_vm_translation_map.cpp

@@ -295,8 +295,11 @@ map_max_pages_need(vm_translation_map */*map*/, addr_t start, addr_t end)
 {
 	// If start == 0, the actual base address is not yet known to the caller and
 	// we shall assume the worst case.
-	if (start == 0)
+	if (start == 0) {
+		// offset the range so it has the worst possible alignment
+		start = 1023 * B_PAGE_SIZE;
 		end += 1023 * B_PAGE_SIZE;
+	}
 
 	return VADDR_TO_PDENT(end) + 1 - VADDR_TO_PDENT(start);
 }