diff options
Diffstat (limited to 'arch/powerpc/include/asm/nohash/pgtable.h')
| -rw-r--r-- | arch/powerpc/include/asm/nohash/pgtable.h | 23 |
1 files changed, 8 insertions, 15 deletions
diff --git a/arch/powerpc/include/asm/nohash/pgtable.h b/arch/powerpc/include/asm/nohash/pgtable.h index 36a1ea6a7806..2160be2e4339 100644 --- a/arch/powerpc/include/asm/nohash/pgtable.h +++ b/arch/powerpc/include/asm/nohash/pgtable.h @@ -147,40 +147,33 @@ extern void set_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep, static inline void __set_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte, int percpu) { -#if defined(CONFIG_PPC32) && defined(CONFIG_PTE_64BIT) /* Second case is 32-bit with 64-bit PTE. In this case, we * can just store as long as we do the two halves in the right order * with a barrier in between. * In the percpu case, we also fallback to the simple update */ - if (percpu) { - *ptep = pte; + if (IS_ENABLED(CONFIG_PPC32) && IS_ENABLED(CONFIG_PTE_64BIT) && !percpu) { + __asm__ __volatile__("\ + stw%U0%X0 %2,%0\n\ + eieio\n\ + stw%U0%X0 %L2,%1" + : "=m" (*ptep), "=m" (*((unsigned char *)ptep+4)) + : "r" (pte) : "memory"); return; } - __asm__ __volatile__("\ - stw%U0%X0 %2,%0\n\ - eieio\n\ - stw%U0%X0 %L2,%1" - : "=m" (*ptep), "=m" (*((unsigned char *)ptep+4)) - : "r" (pte) : "memory"); - -#else /* Anything else just stores the PTE normally. That covers all 64-bit * cases, and 32-bit non-hash with 32-bit PTEs. */ *ptep = pte; -#ifdef CONFIG_PPC_BOOK3E_64 /* * With hardware tablewalk, a sync is needed to ensure that * subsequent accesses see the PTE we just wrote. Unlike userspace * mappings, we can't tolerate spurious faults, so make sure * the new PTE will be seen the first time. */ - if (is_kernel_addr(addr)) + if (IS_ENABLED(CONFIG_PPC_BOOK3E_64) && is_kernel_addr(addr)) mb(); -#endif -#endif } |
