From patchwork Thu Aug 10 17:09:04 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Punit Agrawal X-Patchwork-Id: 9894281 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 9A29360352 for ; Thu, 10 Aug 2017 17:14:01 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8179128AED for ; Thu, 10 Aug 2017 17:14:01 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 764A328B37; Thu, 10 Aug 2017 17:14:01 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id E8A7A289E1 for ; Thu, 10 Aug 2017 17:14:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=0gWUbfBxFuoBkNGYzBiP5mjEDm2e0/RyQHlfX6/Dfss=; b=MnLZun5dvCxpGbkpc9ocmhCsKG +l1iTJ3TBQGdzgrYbL/zLAoNt/k+/CthgmdC14ecJttc+RsvZqzkf07vRqr1Ikp6aMigWOT0izqZO HCmNVS3kvcgPXn3nRCGDCNVqSIbinmk76ftr+JcCol4C+Gnmt0Gmo67JJ/yjUvOKEbP9xVRZRgHk1 oogwNJf/mJR0Pw/tMmxTiRRTtsCBvx9JZS4PZZJmKHXXvdnrgRyVyHbi+zPPA4S/GED2BcO+jQ0ws aPd99sJkBCBeSj351edCThjpRTfzjqBUrOr2+ebauVNNJCLgsA8ZHBmYr5oJh3aXcOJjxlOF9P20g rnw58Qpg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1dfr1u-0005k2-AS; Thu, 10 Aug 2017 17:13:54 +0000 Received: from foss.arm.com ([217.140.101.70]) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1dfqzj-000492-Pa for linux-arm-kernel@lists.infradead.org; Thu, 10 Aug 2017 17:12:22 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id AC46F13D5; Thu, 10 Aug 2017 10:11:19 -0700 (PDT) Received: from localhost (e105922-lin.cambridge.arm.com [10.1.206.107]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 510F83F540; Thu, 10 Aug 2017 10:11:19 -0700 (PDT) From: Punit Agrawal To: will.deacon@arm.com, catalin.marinas@arm.com Subject: [PATCH v6 7/9] arm64: hugetlb: Override set_huge_swap_pte_at() to support contiguous hugepages Date: Thu, 10 Aug 2017 18:09:04 +0100 Message-Id: <20170810170906.30772-8-punit.agrawal@arm.com> X-Mailer: git-send-email 2.13.2 In-Reply-To: <20170810170906.30772-1-punit.agrawal@arm.com> References: <20170810170906.30772-1-punit.agrawal@arm.com> X-ARM-No-Footer: FoSSMail X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20170810_101140_569260_DE86CAC5 X-CRM114-Status: UNSURE ( 7.94 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, David Woods , steve.capper@arm.com, Punit Agrawal , linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP 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/include/asm/hugetlb.h | 3 +++ arch/arm64/mm/hugetlbpage.c | 12 ++++++++++++ 2 files changed, 15 insertions(+) diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h index df8c0aea0917..1dca41bea16a 100644 --- a/arch/arm64/include/asm/hugetlb.h +++ b/arch/arm64/include/asm/hugetlb.h @@ -84,6 +84,9 @@ extern void huge_ptep_clear_flush(struct vm_area_struct *vma, extern void huge_pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep, unsigned long sz); #define huge_pte_clear huge_pte_clear +extern void set_huge_swap_pte_at(struct mm_struct *mm, unsigned long addr, + pte_t *ptep, pte_t pte, unsigned long sz); +#define set_huge_swap_pte_at set_huge_swap_pte_at #include diff --git a/arch/arm64/mm/hugetlbpage.c b/arch/arm64/mm/hugetlbpage.c index b69430a04e87..f6b2ef23285d 100644 --- a/arch/arm64/mm/hugetlbpage.c +++ b/arch/arm64/mm/hugetlbpage.c @@ -182,6 +182,18 @@ 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) +{ + int i, ncontig; + size_t pgsize; + + ncontig = num_contig_ptes(sz, &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) {