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=-7.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 E4231C04EB9 for ; Wed, 5 Dec 2018 12:39:51 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (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 6513F20850 for ; Wed, 5 Dec 2018 12:39:51 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6513F20850 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 438yx129L0zDqRn for ; Wed, 5 Dec 2018 23:39:49 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=redhat.com (client-ip=209.132.183.28; helo=mx1.redhat.com; envelope-from=david@redhat.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=redhat.com Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 438yjh03DyzDqR6 for ; Wed, 5 Dec 2018 23:30:00 +1100 (AEDT) Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id F33E2307EAA1; Wed, 5 Dec 2018 12:29:57 +0000 (UTC) Received: from t460s.redhat.com (ovpn-117-65.ams2.redhat.com [10.36.117.65]) by smtp.corp.redhat.com (Postfix) with ESMTP id C4DF582789; Wed, 5 Dec 2018 12:29:11 +0000 (UTC) From: David Hildenbrand To: linux-mm@kvack.org Subject: [PATCH RFC 1/7] agp: efficeon: no need to set PG_reserved on GATT tables Date: Wed, 5 Dec 2018 13:28:45 +0100 Message-Id: <20181205122851.5891-2-david@redhat.com> In-Reply-To: <20181205122851.5891-1-david@redhat.com> References: <20181205122851.5891-1-david@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.44]); Wed, 05 Dec 2018 12:29:58 +0000 (UTC) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List 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 Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" 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); -- 2.17.2