1 files changed, 7 insertions, 2 deletions

diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S
index 09b38d539b09..eb415043a929 100644
--- a/arch/x86/kernel/head_64.S
+++ b/arch/x86/kernel/head_64.S
@@ -107,8 +107,13 @@ startup_64:
         movq    %rdx, 0(%rbx, %rax, 8)
 ident_complete:
 
-        /* Fixup the kernel text+data virtual addresses
+        /*
+         * Fixup the kernel text+data virtual addresses. Note that
+         * we might write invalid pmds, when the kernel is relocated
+         * cleanup_highmap() fixes this up along with the mappings
+         * beyond _end.
          */
+
         leaq    level2_kernel_pgt(%rip), %rdi
         leaq    4096(%rdi), %r8
         /* See if it is a valid page table entry */
@@ -250,7 +255,7 @@ ENTRY(secondary_startup_64)
         lretq
 
         /* SMP bootup changes these two */
-        __CPUINITDATA
+        __REFDATA
         .align  8
         ENTRY(initial_code)
         .quad   x86_64_start_kernel