From patchwork Fri Dec 14 11:10:06 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Hildenbrand X-Patchwork-Id: 10730883 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 94BFE15A6 for ; Fri, 14 Dec 2018 11:11:15 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8395A2D417 for ; Fri, 14 Dec 2018 11:11:15 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 777A62D422; Fri, 14 Dec 2018 11:11:15 +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=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id E80282D417 for ; Fri, 14 Dec 2018 11:11:14 +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=c7dgFmpfXhiT50AERpjTzqmDeYAvrVzmI/AIRKTsMjM=; b=H+JhXgugS++oRkEAYX9yTA84WH H5BQjEI+kqoSIw/D/t3lmSHuJ68FJoQ+dvxzIV74sg/SewD0/FZ8wXSUbIIfmptHd2OwIwxM0vL+Y pPqESOxyttd0JYqJfk0Wl1nq9kZVNw7zRHIzuJnNsLDR7kW9uG9NHMIYSEL6VPq3M7mQ8V0Vj/H7q OcGSpPezy1wntO2W8PDcgS9s+H1HQwg4Kv8f7NBvsxueuR9FLu4iBQhzt9Im8czjIuxbPAaegt+nt qCUhMUc+DW48DgeWB5mcmR5o2SwjrU0uWhJouoGDQmnBd03Tdr5cRnMWfDPxMHyJdxcniWOZIgzmC XWuI1ODA==; 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 1gXlN8-0007mt-Rr; Fri, 14 Dec 2018 11:11:10 +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-0007X4-Ih; 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 3A3E2307C94C; Fri, 14 Dec 2018 11:10:46 +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 F3F276836F; Fri, 14 Dec 2018 11:10:40 +0000 (UTC) From: David Hildenbrand To: linux-mm@kvack.org Subject: [PATCH v1 1/9] agp: efficeon: no need to set PG_reserved on GATT tables Date: Fri, 14 Dec 2018 12:10:06 +0100 Message-Id: <20181214111014.15672-2-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 [10.5.110.46]); Fri, 14 Dec 2018 11:10:46 +0000 (UTC) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20181214_031054_649066_4EEA1770 X-CRM114-Status: GOOD ( 14.08 ) 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: linux-s390@vger.kernel.org, Arnd Bergmann , David Hildenbrand , David Airlie , Greg Kroah-Hartman , linux-kernel@vger.kernel.org, Matthew Wilcox , Michal Hocko , linux-m68k@lists.linux-m68k.org, linux-mediatek@lists.infradead.org, linux-riscv@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, Andrew Morton , 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 l1 GATT page table is kept in a special on-chip page with 64 entries. We allocate the l2 page table pages via get_zeroed_page() and enter them into the table. These l2 pages are modified accordingly when inserting/removing memory via efficeon_insert_memory and efficeon_remove_memory. Apart from that, these pages are not exposed or ioremap'ed. We can stop setting them reserved (propably copied from generic code). Cc: David Airlie Cc: Arnd Bergmann Cc: Greg Kroah-Hartman Cc: Andrew Morton Cc: Michal Hocko Cc: Matthew Wilcox Signed-off-by: David Hildenbrand --- drivers/char/agp/efficeon-agp.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/char/agp/efficeon-agp.c b/drivers/char/agp/efficeon-agp.c index 7f88490b5479..c53f0f9ef5b0 100644 --- a/drivers/char/agp/efficeon-agp.c +++ b/drivers/char/agp/efficeon-agp.c @@ -163,7 +163,6 @@ static int efficeon_free_gatt_table(struct agp_bridge_data *bridge) unsigned long page = efficeon_private.l1_table[index]; if (page) { efficeon_private.l1_table[index] = 0; - ClearPageReserved(virt_to_page((char *)page)); free_page(page); freed++; } @@ -219,7 +218,6 @@ static int efficeon_create_gatt_table(struct agp_bridge_data *bridge) efficeon_free_gatt_table(agp_bridge); return -ENOMEM; } - SetPageReserved(virt_to_page((char *)page)); for (offset = 0; offset < PAGE_SIZE; offset += clflush_chunk) clflush((char *)page+offset);