x86: add CPU field to struct thread_info

The CPU field will be moved back into thread_info even when
THREAD_INFO_IN_TASK is enabled, so add it back to x86's definition of
struct thread_info.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Borislav Petkov <bp@suse.de>
Acked-by: Mark Rutland <mark.rutland@arm.com>

diff --git a/arch/x86/include/asm/thread_info.h b/arch/x86/include/asm/thread_info.h
index cf13266..ebec69c 100644 (file)
--- a/arch/x86/include/asm/thread_info.h
+++ b/arch/x86/include/asm/thread_info.h
@@ -57,6 +57,9 @@ struct thread_info {
        unsigned long           flags;          /* low level flags */
        unsigned long           syscall_work;   /* SYSCALL_WORK_ flags */
        u32                     status;         /* thread synchronous flags */
+#ifdef CONFIG_SMP
+       u32                     cpu;            /* current CPU */
+#endif
 };
 
 #define INIT_THREAD_INFO(tsk)                  \