From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E8A66C67872 for ; Fri, 14 Dec 2018 11:11:34 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B94DD2080F for ; Fri, 14 Dec 2018 11:11:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="ZqjuAbuF" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B94DD2080F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-riscv-bounces+infradead-linux-riscv=archiver.kernel.org@lists.infradead.org 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=WcHVvHPegg9Hz0Qt5vGPWDfiEblRLopzTqjW+3BoCTA=; b=ZqjuAbuFFtm7sX4fg6qZrYBV9P wdlY4NQZ2VWt4Bk1Qgf0teP2gke68XEL9ustVkGzeTGzTBjx4k14KLiXjM0FQ2aJ03cqwokvFGbGk qzp0ycHXVVxqPeo34cUsSMGK+X1th3zUcERJBxGbDSzZ9PoyyPXJBv0wnzwANkWXgylf2XqmPRMjT KRYDpifpm5cU06dAuDaci/a4Ka7dqpYHNH/qOWPoInKCROW1rxWfhNq3mTHUnm9nAIfb6bg1rado8 Yf4bPWkBBGWOLX1rJkvf7AqV5/gPcS3+1vHO0nOfnXINkhwySazklGn/s3XLtYaLSXBHuXJ+5NlDG QNecdFYg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gXlNT-0008AS-R1; Fri, 14 Dec 2018 11:11:31 +0000 Received: from mx1.redhat.com ([209.132.183.28]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gXlMs-0007XG-JT; Fri, 14 Dec 2018 11:10:56 +0000 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 39346DD9C0; Fri, 14 Dec 2018 11:10:50 +0000 (UTC) Received: from t460s.redhat.com (ovpn-117-139.ams2.redhat.com [10.36.117.139]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7DC595DA2A; Fri, 14 Dec 2018 11:10:46 +0000 (UTC) From: David Hildenbrand To: linux-mm@kvack.org Subject: [PATCH v1 2/9] s390/vdso: don't clear PG_reserved Date: Fri, 14 Dec 2018 12:10:07 +0100 Message-Id: <20181214111014.15672-3-david@redhat.com> In-Reply-To: <20181214111014.15672-1-david@redhat.com> References: <20181214111014.15672-1-david@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.38]); Fri, 14 Dec 2018 11:10:50 +0000 (UTC) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20181214_031054_655180_FAD475E5 X-CRM114-Status: GOOD ( 12.75 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-s390@vger.kernel.org, Michal Hocko , Kees Cook , Vasily Gorbik , David Hildenbrand , Heiko Carstens , linux-kernel@vger.kernel.org, Matthew Wilcox , Michal Hocko , linux-m68k@lists.linux-m68k.org, Mike Rapoport , linux-mediatek@lists.infradead.org, Souptick Joarder , Martin Schwidefsky , linux-riscv@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, Andrew Morton , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+infradead-linux-riscv=archiver.kernel.org@lists.infradead.org The VDSO is part of the kernel image and therefore the struct pages are marked as reserved during boot. As we install a special mapping, the actual struct pages will never be exposed to MM via the page tables. We can therefore leave the pages marked as reserved. Suggested-by: Martin Schwidefsky Cc: Martin Schwidefsky Cc: Heiko Carstens Cc: Matthew Wilcox Cc: Mike Rapoport Cc: Michal Hocko Cc: Vasily Gorbik Cc: Kees Cook Cc: Souptick Joarder Cc: Andrew Morton Cc: Michal Hocko Signed-off-by: David Hildenbrand --- arch/s390/kernel/vdso.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/arch/s390/kernel/vdso.c b/arch/s390/kernel/vdso.c index ebe748a9f472..9e24d23c26c0 100644 --- a/arch/s390/kernel/vdso.c +++ b/arch/s390/kernel/vdso.c @@ -292,7 +292,6 @@ static int __init vdso_init(void) BUG_ON(vdso32_pagelist == NULL); for (i = 0; i < vdso32_pages - 1; i++) { struct page *pg = virt_to_page(vdso32_kbase + i*PAGE_SIZE); - ClearPageReserved(pg); get_page(pg); vdso32_pagelist[i] = pg; } @@ -310,7 +309,6 @@ static int __init vdso_init(void) BUG_ON(vdso64_pagelist == NULL); for (i = 0; i < vdso64_pages - 1; i++) { struct page *pg = virt_to_page(vdso64_kbase + i*PAGE_SIZE); - ClearPageReserved(pg); get_page(pg); vdso64_pagelist[i] = pg; } -- 2.17.2 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv