From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753407AbdDENi6 (ORCPT ); Wed, 5 Apr 2017 09:38:58 -0400 Received: from foss.arm.com ([217.140.101.70]:58920 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751285AbdDENiW (ORCPT ); Wed, 5 Apr 2017 09:38:22 -0400 From: Punit Agrawal To: catalin.marinas@arm.com, will.deacon@arm.com, akpm@linux-foundation.org, mark.rutland@arm.com Cc: Punit Agrawal , linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, tbaicar@codeaurora.org, kirill.shutemov@linux.intel.com, mike.kravetz@oracle.com, hillf.zj@alibaba-inc.com, steve.capper@arm.com, David Woods Subject: [PATCH v2 7/9] arm64: hugetlb: Override set_huge_swap_pte_at() to support contiguous hugepages Date: Wed, 5 Apr 2017 14:37:20 +0100 Message-Id: <20170405133722.6406-8-punit.agrawal@arm.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170405133722.6406-1-punit.agrawal@arm.com> References: <20170405133722.6406-1-punit.agrawal@arm.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The default implementation of set_huge_swap_pte_at() does not support hugepages consisting of contiguous ptes. Override it to add support for contiguous hugepages. Signed-off-by: Punit Agrawal Cc: David Woods --- arch/arm64/mm/hugetlbpage.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/arch/arm64/mm/hugetlbpage.c b/arch/arm64/mm/hugetlbpage.c index 53bda26c6e8f..6d3857f41b8d 100644 --- a/arch/arm64/mm/hugetlbpage.c +++ b/arch/arm64/mm/hugetlbpage.c @@ -143,6 +143,23 @@ void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, } } +void set_huge_swap_pte_at(struct mm_struct *mm, unsigned long addr, + pte_t *ptep, pte_t pte, unsigned long sz) +{ + size_t pgsize; + int i; + int ncontig; + + if (sz == PUD_SIZE || sz == PMD_SIZE) { + set_pte(ptep, pte); + return; + } + + ncontig = find_num_contig(mm, addr, ptep, &pgsize); + for (i = 0; i < ncontig; i++, ptep++) + set_pte(ptep, pte); +} + pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr, unsigned long sz) { -- 2.11.0