diff options
Diffstat (limited to 'include/asm-x86/paravirt.h')
| -rw-r--r-- | include/asm-x86/paravirt.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/include/asm-x86/paravirt.h b/include/asm-x86/paravirt.h index 5ea37a48eec..e9ada314dfc 100644 --- a/include/asm-x86/paravirt.h +++ b/include/asm-x86/paravirt.h @@ -238,6 +238,11 @@ struct pv_mmu_ops { void (*pte_update_defer)(struct mm_struct *mm, unsigned long addr, pte_t *ptep); + pte_t (*ptep_modify_prot_start)(struct mm_struct *mm, unsigned long addr, + pte_t *ptep); + void (*ptep_modify_prot_commit)(struct mm_struct *mm, unsigned long addr, + pte_t *ptep, pte_t pte); + pteval_t (*pte_val)(pte_t); pteval_t (*pte_flags)(pte_t); pte_t (*make_pte)(pteval_t pte); @@ -1039,6 +1044,29 @@ static inline pgdval_t pgd_val(pgd_t pgd) return ret; } +#define __HAVE_ARCH_PTEP_MODIFY_PROT_TRANSACTION +static inline pte_t ptep_modify_prot_start(struct mm_struct *mm, unsigned long addr, + pte_t *ptep) +{ + pteval_t ret; + + ret = PVOP_CALL3(pteval_t, pv_mmu_ops.ptep_modify_prot_start, + mm, addr, ptep); + + return (pte_t) { .pte = ret }; +} + +static inline void ptep_modify_prot_commit(struct mm_struct *mm, unsigned long addr, + pte_t *ptep, pte_t pte) +{ + if (sizeof(pteval_t) > sizeof(long)) + /* 5 arg words */ + pv_mmu_ops.ptep_modify_prot_commit(mm, addr, ptep, pte); + else + PVOP_VCALL4(pv_mmu_ops.ptep_modify_prot_commit, + mm, addr, ptep, pte.pte); +} + static inline void set_pte(pte_t *ptep, pte_t pte) { if (sizeof(pteval_t) > sizeof(long)) |