diff options
| author | Dan Williams <[email protected]> | 2018-12-04 13:37:11 -0800 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2018-12-05 09:03:06 +0100 |
| commit | 0cebbb60f759a709dabb3c87b9704f9844878850 (patch) | |
| tree | 593a2f8c46aaa3cd9f65163b787bee5943e0a5b6 /include | |
| parent | c683c37cd13246941924c48f6c6a9863425e0cec (diff) | |
generic/pgtable: Introduce {p4d,pgd}_same()
In preparation for introducing '_safe' versions of page table entry 'set'
helpers, introduce generic versions of p4d_same() and pgd_same().
Signed-off-by: Dan Williams <[email protected]>
Acked-by: Kirill A. Shutemov <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: H. Peter Anvin <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Rik van Riel <[email protected]>
Cc: Sebastian Andrzej Siewior <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Link: http://lkml.kernel.org/r/154395943153.32119.1733586547359626311.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-generic/pgtable.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h index eea50ef8b8cd..dae7f98babed 100644 --- a/include/asm-generic/pgtable.h +++ b/include/asm-generic/pgtable.h @@ -386,6 +386,20 @@ static inline int pud_same(pud_t pud_a, pud_t pud_b) } #endif +#ifndef __HAVE_ARCH_P4D_SAME +static inline int p4d_same(p4d_t p4d_a, p4d_t p4d_b) +{ + return p4d_val(p4d_a) == p4d_val(p4d_b); +} +#endif + +#ifndef __HAVE_ARCH_PGD_SAME +static inline int pgd_same(pgd_t pgd_a, pgd_t pgd_b) +{ + return pgd_val(pgd_a) == pgd_val(pgd_b); +} +#endif + #ifndef __HAVE_ARCH_DO_SWAP_PAGE /* * Some architectures support metadata associated with a page. When a |