diff options
Diffstat (limited to 'arch/x86/include/asm/pgtable-3level.h')
| -rw-r--r-- | arch/x86/include/asm/pgtable-3level.h | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/arch/x86/include/asm/pgtable-3level.h b/arch/x86/include/asm/pgtable-3level.h index 93c82c6ce6e3..967b135fa2c0 100644 --- a/arch/x86/include/asm/pgtable-3level.h +++ b/arch/x86/include/asm/pgtable-3level.h @@ -19,7 +19,15 @@ pr_err("%s:%d: bad pgd %p(%016Lx)\n", \ __FILE__, __LINE__, &(e), pgd_val(e)) -/* Rules for using set_pte: the pte being assigned *must* be +#define pxx_xchg64(_pxx, _ptr, _val) ({ \ + _pxx##val_t *_p = (_pxx##val_t *)_ptr; \ + _pxx##val_t _o = *_p; \ + do { } while (!try_cmpxchg64(_p, &_o, (_val))); \ + native_make_##_pxx(_o); \ +}) + +/* + * Rules for using set_pte: the pte being assigned *must* be * either not present or in a state where the hardware will * not attempt to update the pte. In places where this is * not possible, use pte_get_and_clear to obtain the old pte @@ -34,12 +42,12 @@ static inline void native_set_pte(pte_t *ptep, pte_t pte) static inline void native_set_pte_atomic(pte_t *ptep, pte_t pte) { - set_64bit((unsigned long long *)(ptep), native_pte_val(pte)); + pxx_xchg64(pte, ptep, native_pte_val(pte)); } static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd) { - set_64bit((unsigned long long *)(pmdp), native_pmd_val(pmd)); + pxx_xchg64(pmd, pmdp, native_pmd_val(pmd)); } static inline void native_set_pud(pud_t *pudp, pud_t pud) @@ -47,7 +55,7 @@ static inline void native_set_pud(pud_t *pudp, pud_t pud) #ifdef CONFIG_PAGE_TABLE_ISOLATION pud.p4d.pgd = pti_set_user_pgtbl(&pudp->p4d.pgd, pud.p4d.pgd); #endif - set_64bit((unsigned long long *)(pudp), native_pud_val(pud)); + pxx_xchg64(pud, pudp, native_pud_val(pud)); } /* @@ -91,13 +99,6 @@ static inline void pud_clear(pud_t *pudp) } -#define pxx_xchg64(_pxx, _ptr, _val) ({ \ - _pxx##val_t *_p = (_pxx##val_t *)_ptr; \ - _pxx##val_t _o = *_p; \ - do { } while (!try_cmpxchg64(_p, &_o, (_val))); \ - native_make_##_pxx(_o); \ -}) - #ifdef CONFIG_SMP static inline pte_t native_ptep_get_and_clear(pte_t *ptep) { |