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asm-generic: introduce <asm-generic/pgtable-nop4d.h>

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Like with pgtable-nopud.h for 4-level paging, this new header is base
for converting an architectures to properly folded p4d_t level.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Kirill A. Shutemov 2017-03-09 17:24:06 +03:00 • committed by Linus Torvalds
parent 9849a5697d
commit 048456dcf2
3 changed files with 89 additions and 24 deletions
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14
include/asm-generic/tlb.h
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@ -270,6 +270,12 @@ static inline void tlb_remove_check_page_size_change(struct mmu_gather *tlb,
__pte_free_tlb(tlb, ptep, address); \
} while (0)
#define pmd_free_tlb(tlb, pmdp, address) \
do { \
__tlb_adjust_range(tlb, address, PAGE_SIZE); \
__pmd_free_tlb(tlb, pmdp, address); \
} while (0)
#ifndef __ARCH_HAS_4LEVEL_HACK
#define pud_free_tlb(tlb, pudp, address) \
do { \
@ -278,11 +284,13 @@ static inline void tlb_remove_check_page_size_change(struct mmu_gather *tlb,
} while (0)
#endif
#define pmd_free_tlb(tlb, pmdp, address) \
#ifndef __ARCH_HAS_5LEVEL_HACK
#define p4d_free_tlb(tlb, pudp, address) \
do { \
__tlb_adjust_range(tlb, address, PAGE_SIZE); \
__pmd_free_tlb(tlb, pmdp, address); \
__tlb_adjust_range(tlb, address, PAGE_SIZE); \
__p4d_free_tlb(tlb, pudp, address); \
} while (0)
#endif
#define tlb_migrate_finish(mm) do {} while (0)