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authorKirill A. Shutemov <kirill.shutemov@linux.intel.com>2018-06-23 01:08:41 +0300
committerThomas Gleixner <tglx@linutronix.de>2018-06-23 14:20:37 +0200
commit2458e53ff74cd1063ed3e00459da1d35c559d369 (patch)
tree1f969e50a4c237e4482a417af7c68f89e68e9938
parent51be1335151771075dcb19f3464ca9f331134285 (diff)
x86/mm: Fix 'no5lvl' handling
early_identify_cpu() has to use early version of pgtable_l5_enabled() that doesn't rely on cpu_feature_enabled(). Defining USE_EARLY_PGTABLE_L5 before all includes does the trick. I lost the define in one of reworks of the original patch. Fixes: 372fddf70904 ("x86/mm: Introduce the 'no5lvl' kernel parameter") Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Link: https://lkml.kernel.org/r/20180622220841.54135-3-kirill.shutemov@linux.intel.com
-rw-r--r--arch/x86/kernel/cpu/common.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index 0df7151cfef4..eb4cb3efd20e 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -1,3 +1,6 @@
+/* cpu_feature_enabled() cannot be used this early */
+#define USE_EARLY_PGTABLE_L5
+
#include <linux/bootmem.h>
#include <linux/linkage.h>
#include <linux/bitops.h>