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=-8.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,FROM_LOCAL_NOVOWEL, HEADER_FROM_DIFFERENT_DOMAINS,HK_RANDOM_FROM,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 50786C432C3 for ; Thu, 14 Nov 2019 01:09:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 56A32206EC for ; Thu, 14 Nov 2019 01:09:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="dLdhF2Pz" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726613AbfKNBIq (ORCPT ); Wed, 13 Nov 2019 20:08:46 -0500 Received: from mail-lf1-f66.google.com ([209.85.167.66]:44604 "EHLO mail-lf1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726363AbfKNBIq (ORCPT ); Wed, 13 Nov 2019 20:08:46 -0500 Received: by mail-lf1-f66.google.com with SMTP id z188so3516960lfa.11; Wed, 13 Nov 2019 17:08:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=wBQHB2EzlG/RSRWYzzXHGHn7Pgw3gzypxOnIpXuT5fc=; b=dLdhF2PzyQ/jFoL4zrJ4qhDA2R7hCREOwWVwawyuVHALBhJHtbEXnCQz1uUxkzTNLq wCyutaWHNPjDEhXkiQn8T65OcpDyFgntNJWyA9noEO11ZSotKuO8nD+93Q+0PS/BMbYD JF+fT85rjf2Z0MQfsES+fuUDd5zXynLC9SCN8gKCYXwzdfNUnQRZNJLTgOch7duW1qyU 6X31e2ITWOiWXpzgnOrTxuO9KfNtX7z6XWxKSt17khUaC/c68B05BjDz5rhqOdIUuXHy ZOY9HXj8XNP4Ox8HFRpuAZaoE/ALG4L6YOVT7bqNFoE0bxAJ/IiJeUggbYcKtM4roz5S pw2A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=wBQHB2EzlG/RSRWYzzXHGHn7Pgw3gzypxOnIpXuT5fc=; b=pEQ9AsWrOo5q89uX/8rtrqgwemvp8sPJhOgO5NX8XvhVrBUlUEJXB33SDX0ixVH4dY Vv27gFxURPeWV9o4JXhYf69arYGRrMtf4z7E9osULssEyd3mHyBBy623NE3LTp1X/VCr kT6xXHQAb7J3wecFfaaY+FCwG8PhZAMcYkMVGyISXE/RSkS0I7WxJlllriGPjBe6TPl+ +coKehksw7DGhaoZTxTqp1ytODRyFtotiFhSuhkf7ELzXFK1u6yaNE0wmW6PYwhmaIAv sdzE4ltObhsuka2Pl/1rjVAetkbwXzRuX+esqkaPONhI01s1/uPbvK8EtktbxcCPn7l8 yUHw== X-Gm-Message-State: APjAAAU1DcTJW71IssO3gVJ5NMUzCEspRRd6mLAI85Ze1Phu5TAOefgR kIE0uD8Z1QSfzZ6yHGa/pEY= X-Google-Smtp-Source: APXvYqyjODrUidyRiNtKsHWwCmupyjlQdwCeGsh09cvSNBIORfw8Pm8KVk1OyhKrkpCWYVOWGegIsg== X-Received: by 2002:a19:ee17:: with SMTP id g23mr4590004lfb.121.1573693723677; Wed, 13 Nov 2019 17:08:43 -0800 (PST) Received: from octofox.cadence.com (jcmvbkbc-1-pt.tunnel.tserv24.sto1.ipv6.he.net. [2001:470:27:1fa::2]) by smtp.gmail.com with ESMTPSA id b14sm1726678lfa.14.2019.11.13.17.08.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 13 Nov 2019 17:08:43 -0800 (PST) From: Max Filippov To: linux-xtensa@linux-xtensa.org Cc: Chris Zankel , Mike Rapoport , linux-kernel@vger.kernel.org, Max Filippov , stable@vger.kernel.org Subject: [PATCH] xtensa: use MEMBLOCK_ALLOC_ANYWHERE for KASAN shadow map Date: Wed, 13 Nov 2019 17:08:24 -0800 Message-Id: <20191114010824.29540-1-jcmvbkbc@gmail.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org KASAN shadow map doesn't need to be accessible through the linear kernel mapping, allocate its pages with MEMBLOCK_ALLOC_ANYWHERE so that high memory can be used. This frees up to ~100MB of low memory on xtensa configurations with KASAN and high memory. Cc: stable@vger.kernel.org # v5.1+ Fixes: f240ec09bb8a ("memblock: replace memblock_alloc_base(ANYWHERE) with memblock_phys_alloc") Signed-off-by: Max Filippov --- arch/xtensa/mm/kasan_init.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/xtensa/mm/kasan_init.c b/arch/xtensa/mm/kasan_init.c index 9c957791bb33..e3baa21ff24c 100644 --- a/arch/xtensa/mm/kasan_init.c +++ b/arch/xtensa/mm/kasan_init.c @@ -60,7 +60,9 @@ static void __init populate(void *start, void *end) for (k = 0; k < PTRS_PER_PTE; ++k, ++j) { phys_addr_t phys = - memblock_phys_alloc(PAGE_SIZE, PAGE_SIZE); + memblock_phys_alloc_range(PAGE_SIZE, PAGE_SIZE, + 0, + MEMBLOCK_ALLOC_ANYWHERE); if (!phys) panic("Failed to allocate page table page\n"); -- 2.20.1