diff options
authorKirill A. Shutemov <kirill.shutemov@linux.intel.com>2018-06-23 01:08:40 +0300
committerThomas Gleixner <tglx@linutronix.de>2018-06-23 14:20:37 +0200
commit51be1335151771075dcb19f3464ca9f331134285 (patch)
parent964d978433a4b9aa1368ff71227ca0027dd1e32f (diff)
Revert "x86/mm: Mark __pgtable_l5_enabled __initdata"
This reverts commit e4e961e36f063484c48bed919013c106d178995d. We need to use early version of pgtable_l5_enabled() in early_identify_cpu() as this code runs before cpu_feature_enabled() is usable. But it leads to section mismatch: cpu_init() load_mm_ldt() ldt_slot_va() LDT_BASE_ADDR LDT_PGD_ENTRY pgtable_l5_enabled() __pgtable_l5_enabled __pgtable_l5_enabled marked as __initdata, but cpu_init() is not __init. It's fixable: early code can be isolated into a separate translation unit, but such change collides with other work in the area. That's too much hassle to save 4 bytes of memory. Return __pgtable_l5_enabled back to be __ro_after_init. 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/20180622220841.54135-2-kirill.shutemov@linux.intel.com
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c
index a21d6ace648e..8047379e575a 100644
--- a/arch/x86/kernel/head64.c
+++ b/arch/x86/kernel/head64.c
@@ -44,7 +44,7 @@ static unsigned int __initdata next_early_pgt;
pmdval_t early_pmd_flags = __PAGE_KERNEL_LARGE & ~(_PAGE_GLOBAL | _PAGE_NX);
#ifdef CONFIG_X86_5LEVEL
-unsigned int __pgtable_l5_enabled __initdata;
+unsigned int __pgtable_l5_enabled __ro_after_init;
unsigned int pgdir_shift __ro_after_init = 39;
unsigned int ptrs_per_p4d __ro_after_init = 1;