From: Christophe Leroy Date: Fri, 16 Aug 2019 05:41:44 +0000 (+0000) Subject: powerpc/mm: ppc 603 doesn't need update_mmu_cache() X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=f204338f8e29777302042cba578b0da44f69695f;p=openwrt%2Fstaging%2Fblogic.git powerpc/mm: ppc 603 doesn't need update_mmu_cache() On powerpc 603, there is no hash table so get out of update_mmu_cache() early. Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/6133e0f115d955fac4061536dab0fa7480a1c433.1565933217.git.christophe.leroy@c-s.fr --- diff --git a/arch/powerpc/mm/book3s32/mmu.c b/arch/powerpc/mm/book3s32/mmu.c index 5d7d35eb96fb..50a1991d257f 100644 --- a/arch/powerpc/mm/book3s32/mmu.c +++ b/arch/powerpc/mm/book3s32/mmu.c @@ -319,6 +319,8 @@ void hash_preload(struct mm_struct *mm, unsigned long ea) void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t *ptep) { + if (!mmu_has_feature(MMU_FTR_HPTE_TABLE)) + return; /* * We don't need to worry about _PAGE_PRESENT here because we are * called with either mm->page_table_lock held or ptl lock held