x86/mm: Stop pretending pgtable_l5_enabled is a variable

pgtable_l5_enabled is defined using cpu_feature_enabled() but we refer
to it as a variable. This is misleading.

Make pgtable_l5_enabled() a function.

We cannot literally define it as a function due to circular dependencies
between header files. Function-alike macros is close enough.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Hugh Dickins <hughd@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20180518103528.59260-4-kirill.shutemov@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/x86/power/hibernate_64.c b/arch/x86/power/hibernate_64.c
index ccf4a49bb065..67ccf64c8bd8 100644
--- a/arch/x86/power/hibernate_64.c
+++ b/arch/x86/power/hibernate_64.c
@@ -72,7 +72,7 @@ static int set_up_temporary_text_mapping(pgd_t *pgd)
          * tables used by the image kernel.
          */
 
-        if (pgtable_l5_enabled) {
+        if (pgtable_l5_enabled()) {
                 p4d = (p4d_t *)get_safe_page(GFP_ATOMIC);
                 if (!p4d)
                         return -ENOMEM;