diff options
Diffstat (limited to 'arch/arm64/include/asm/pgtable.h')
| -rw-r--r-- | arch/arm64/include/asm/pgtable.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index 2d99dfee1144..09b45f4ef3ce 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -516,6 +516,21 @@ extern int kern_addr_valid(unsigned long addr); #define pgtable_cache_init() do { } while (0) +/* + * On AArch64, the cache coherency is handled via the set_pte_at() function. + */ +static inline void update_mmu_cache(struct vm_area_struct *vma, + unsigned long addr, pte_t *ptep) +{ + /* + * We don't do anything here, so there's a very small chance of + * us retaking a user fault which we just fixed up. The alternative + * is doing a dsb(ishst), but that penalises the fastpath. + */ +} + +#define update_mmu_cache_pmd(vma, address, pmd) do { } while (0) + #endif /* !__ASSEMBLY__ */ #endif /* __ASM_PGTABLE_H */ |