From d4870b89acd7c362ded08f9295e8d143cf7e0024 Mon Sep 17 00:00:00 2001 From: Christophe Leroy Date: Tue, 19 May 2020 05:49:10 +0000 Subject: powerpc/8xx: Only 8M pages are hugepte pages now 512k pages are now standard pages, so only 8M pages are hugepte. No more handling of normal page tables through hugepd allocation and freeing, and hugepte helpers can also be simplified. Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/2c6135d57fb76eebf70673fbac3dc9e740767879.1589866984.git.christophe.leroy@csgroup.eu --- arch/powerpc/mm/hugetlbpage.c | 16 +++------------- 1 file changed, 3 insertions(+), 13 deletions(-) (limited to 'arch/powerpc/mm') diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c index 38bad839e608..cfacd364c7aa 100644 --- a/arch/powerpc/mm/hugetlbpage.c +++ b/arch/powerpc/mm/hugetlbpage.c @@ -54,24 +54,17 @@ static int __hugepte_alloc(struct mm_struct *mm, hugepd_t *hpdp, if (pshift >= pdshift) { cachep = PGT_CACHE(PTE_T_ORDER); num_hugepd = 1 << (pshift - pdshift); - new = NULL; - } else if (IS_ENABLED(CONFIG_PPC_8xx)) { - cachep = NULL; - num_hugepd = 1; - new = pte_alloc_one(mm); } else { cachep = PGT_CACHE(pdshift - pshift); num_hugepd = 1; - new = NULL; } - if (!cachep && !new) { + if (!cachep) { WARN_ONCE(1, "No page table cache created for hugetlb tables"); return -ENOMEM; } - if (cachep) - new = kmem_cache_alloc(cachep, pgtable_gfp_flags(mm, GFP_KERNEL)); + new = kmem_cache_alloc(cachep, pgtable_gfp_flags(mm, GFP_KERNEL)); BUG_ON(pshift > HUGEPD_SHIFT_MASK); BUG_ON((unsigned long)new & HUGEPD_SHIFT_MASK); @@ -102,10 +95,7 @@ static int __hugepte_alloc(struct mm_struct *mm, hugepd_t *hpdp, if (i < num_hugepd) { for (i = i - 1 ; i >= 0; i--, hpdp--) *hpdp = __hugepd(0); - if (cachep) - kmem_cache_free(cachep, new); - else - pte_free(mm, new); + kmem_cache_free(cachep, new); } else { kmemleak_ignore(new); } -- cgit v1.2.3