diff --git a/arch/x86/include/asm/sections.h b/arch/x86/include/asm/sections.h
index 036c360910c5d35e71b3cf0cac6c6555ed73a71c..a6e8373a5170f8d226350c7eb0459b2f8581bf2f 100644
--- a/arch/x86/include/asm/sections.h
+++ b/arch/x86/include/asm/sections.h
@@ -2,6 +2,8 @@
 #ifndef _ASM_X86_SECTIONS_H
 #define _ASM_X86_SECTIONS_H
 
+#define arch_is_kernel_initmem_freed arch_is_kernel_initmem_freed
+
 #include <asm-generic/sections.h>
 #include <asm/extable.h>
 
@@ -14,4 +16,22 @@ extern char __end_rodata_hpage_align[];
 
 extern char __end_of_kernel_reserve[];
 
+extern unsigned long _brk_start, _brk_end;
+
+static inline bool arch_is_kernel_initmem_freed(unsigned long addr)
+{
+	/*
+	 * If _brk_start has not been cleared, brk allocation is incomplete,
+	 * and we can not make assumptions about its use.
+	 */
+	if (_brk_start)
+		return 0;
+
+	/*
+	 * After brk allocation is complete, space between _brk_end and _end
+	 * is available for allocation.
+	 */
+	return addr >= _brk_end && addr < (unsigned long)&_end;
+}
+
 #endif	/* _ASM_X86_SECTIONS_H */
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index a74262c714849dcf24d8966b0ef485611540d5f6..e6b545047f381127908e4ecf8234ef26b6879642 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -64,7 +64,6 @@ RESERVE_BRK(dmi_alloc, 65536);
  * at link time, with RESERVE_BRK*() facility reserving additional
  * chunks.
  */
-static __initdata
 unsigned long _brk_start = (unsigned long)__brk_base;
 unsigned long _brk_end   = (unsigned long)__brk_base;