1 files changed, 2 insertions, 0 deletions

diff --git a/include/asm-x86/processor_64.h b/include/asm-x86/processor_64.h
index 20d8935d141a..e7bea4fed642 100644
--- a/include/asm-x86/processor_64.h
+++ b/include/asm-x86/processor_64.h
@@ -238,6 +238,8 @@ struct thread_struct {
         int             ioperm;
         unsigned long   *io_bitmap_ptr;
         unsigned io_bitmap_max;
+/* MSR_IA32_DEBUGCTLMSR value to switch in if TIF_DEBUGCTLMSR is set.  */
+        unsigned long   debugctlmsr;
 /* cached TLS descriptors. */
         u64 tls_array[GDT_ENTRY_TLS_ENTRIES];
 } __attribute__((aligned(16)));