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| author | Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2018-05-18 13:35:24 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-05-19 12:56:57 +0300 |
| commit | ed7588d5dc6f5e7202fb9bbeb14d94706ba225d7 (patch) | |
| tree | 359a4e804f7d677e83b0283975bb1bc39ae3ca56 /arch/x86/mm/kasan_init_64.c | |
| parent | ad3fe525b9507d8d750d60e8e5dd8e0c0836fb99 (diff) | |
| download | linux-ed7588d5dc6f5e7202fb9bbeb14d94706ba225d7.tar.xz | |
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>
Diffstat (limited to 'arch/x86/mm/kasan_init_64.c')
| -rw-r--r-- | arch/x86/mm/kasan_init_64.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/x86/mm/kasan_init_64.c b/arch/x86/mm/kasan_init_64.c index 340bb9b32e01..e3e77527f8df 100644 --- a/arch/x86/mm/kasan_init_64.c +++ b/arch/x86/mm/kasan_init_64.c @@ -180,7 +180,7 @@ static void __init clear_pgds(unsigned long start, * With folded p4d, pgd_clear() is nop, use p4d_clear() * instead. */ - if (pgtable_l5_enabled) + if (pgtable_l5_enabled()) pgd_clear(pgd); else p4d_clear(p4d_offset(pgd, start)); @@ -195,7 +195,7 @@ static inline p4d_t *early_p4d_offset(pgd_t *pgd, unsigned long addr) { unsigned long p4d; - if (!pgtable_l5_enabled) + if (!pgtable_l5_enabled()) return (p4d_t *)pgd; p4d = __pa_nodebug(pgd_val(*pgd)) & PTE_PFN_MASK; @@ -282,7 +282,7 @@ void __init kasan_early_init(void) for (i = 0; i < PTRS_PER_PUD; i++) kasan_zero_pud[i] = __pud(pud_val); - for (i = 0; pgtable_l5_enabled && i < PTRS_PER_P4D; i++) + for (i = 0; pgtable_l5_enabled() && i < PTRS_PER_P4D; i++) kasan_zero_p4d[i] = __p4d(p4d_val); kasan_map_early_shadow(early_top_pgt); @@ -313,7 +313,7 @@ void __init kasan_init(void) * bunch of things like kernel code, modules, EFI mapping, etc. * We need to take extra steps to not overwrite them. */ - if (pgtable_l5_enabled) { + if (pgtable_l5_enabled()) { void *ptr; ptr = (void *)pgd_page_vaddr(*pgd_offset_k(KASAN_SHADOW_END)); |