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=-9.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,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 913D2C10F29 for ; Mon, 9 Mar 2020 08:22:52 +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 63E8E20848 for ; Mon, 9 Mar 2020 08:22:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Caxv7z3G"; dkim=pass (2048-bit key) header.d=sifive.com header.i=@sifive.com header.b="m/giYsQO" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 63E8E20848 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=sifive.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:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-Id:Date :Subject:To:From:Reply-To:Content-Type:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=dOfAoLdk+wyu9cMPPwg3ptCFXLjHocYAW+86LT+5msM=; b=Caxv7z3G1atcqk 9EEqAUSAMKOcwsfcy5Z2HyYrRuV+xhrwtmCXYaY95o8LZe3HRW6xJmswx6JCMBU6cijcA+meFOAqP bmXVVgwsr9VqBrMhXpyRsJnC040o+QU8aZdcKxnYNE18UEzxNfYh8rDPuYR3qw9QG3Wioeu3VLfet SmtFAIGqLKwuwGMxWJ6YEAmeuMNG4nCskARotyn2GF7GGCqO7EZwmSoS4MEyrFM2F8odBvxTG3Vrn BCvpSXHL5UAXf62LkOJhwqjyGxVvK7u703QIt7w05I6BHj3s9LBt5CbtGIyE8C4/2wDn1eEmChlD9 I1m1IP9M58kNKMZMAAjg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jBDgW-0005xz-24; Mon, 09 Mar 2020 08:22:48 +0000 Received: from mail-pf1-x442.google.com ([2607:f8b0:4864:20::442]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jBDgS-0005sO-5T for linux-riscv@lists.infradead.org; Mon, 09 Mar 2020 08:22:45 +0000 Received: by mail-pf1-x442.google.com with SMTP id n7so4504506pfn.0 for ; Mon, 09 Mar 2020 01:22:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=dOfAoLdk+wyu9cMPPwg3ptCFXLjHocYAW+86LT+5msM=; b=m/giYsQOqBKciJBZcJMXG3pJIU8PzNA/YNo1CXykqc3wPCLwBGH6k2idh+ZXn05yE4 yRciCQY9RJloiOJwvlJMD6Kq7e+lTftgYDsLY45GGla2EpqtQL2xThwzrXP3vaw8T+E8 ilhj8Ef/PETZkQnyDqHqgB7VKnhRYu6xwv9b3C2p5CDCMq5HajGUi00OKf1AsAEfiZGx WYDOZvYQcT6HFoUIpoD6fqGE6b4LCfgg0ktM8Z5TGwjKJL7SFv72j+SYEIXpQyQ8AKGL c6C5c1caGCYFf+wV6+XQyLSB0/yPpD89KnvgSTyv4jILmkZwMyql4ahKfoLtPpNotbmr c1DQ== 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:in-reply-to :references:mime-version:content-transfer-encoding; bh=dOfAoLdk+wyu9cMPPwg3ptCFXLjHocYAW+86LT+5msM=; b=JCyUYwrjWuW9Nq6tMmc6ZodtZKZEaHUFinndgCKktjzq4Xf5GCCMQ3TYsAXXH1N3qt E8EO+UCyrlFX75R8gD2195mGrerVal2Taqtt1aV0xj4ZwHGRF2vMspxo2AbqEU4F5pSv UM0xn+r193Rf/peWLo1bQdZQi/3YIoMz0u9GXsi0UtkN57b1ak8ht8ytOP9CmFH6lU9u IH3KWuI3X825jXB+pF42hIErzRco04MDQ0hlREzHP7UlBxv8eJ2pYMbZs9wQpkNY9g/A IL4RyVei1hTsatSDt6MnGQmH/kK5B0wbISQwv2SQf+ExPyzgF0KDU6i3rAnBHULQ9TXC t0rQ== X-Gm-Message-State: ANhLgQ3Yvon0U1sOxzhF/TdNDzJZxW7q/tddYMoj4Pw91lgwEicmJy20 38wZPrx8JW4hmAJN9Gcm5vg1BA== X-Google-Smtp-Source: ADFU+vteMe3ewvhpJQl/NECjXwkfEf/awPln9cYkogZavclnc7ufmZRdrvr43bRED8C+ximaAcRKkg== X-Received: by 2002:aa7:9e8b:: with SMTP id p11mr15205017pfq.26.1583742163604; Mon, 09 Mar 2020 01:22:43 -0700 (PDT) Received: from hsinchu02.internal.sifive.com (220-132-236-182.HINET-IP.hinet.net. [220.132.236.182]) by smtp.gmail.com with ESMTPSA id v5sm18364779pfn.64.2020.03.09.01.22.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Mar 2020 01:22:43 -0700 (PDT) From: Zong Li To: palmer@dabbelt.com, paul.walmsley@sifive.com, aou@eecs.berkeley.edu, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 3/9] riscv: add ARCH_SUPPORTS_DEBUG_PAGEALLOC support Date: Mon, 9 Mar 2020 16:22:23 +0800 Message-Id: X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200309_012244_228242_C6C06A91 X-CRM114-Status: UNSURE ( 8.14 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Zong Li Sender: "linux-riscv" Errors-To: linux-riscv-bounces+infradead-linux-riscv=archiver.kernel.org@lists.infradead.org ARCH_SUPPORTS_DEBUG_PAGEALLOC provides a hook to map and unmap pages for debugging purposes. Implement the __kernel_map_pages functions to fill the poison pattern. Signed-off-by: Zong Li --- arch/riscv/Kconfig | 3 +++ arch/riscv/mm/pageattr.c | 13 +++++++++++++ 2 files changed, 16 insertions(+) diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 07bf1a7c0dd2..f524d7e60648 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -132,6 +132,9 @@ config ARCH_SELECT_MEMORY_MODEL config ARCH_WANT_GENERAL_HUGETLB def_bool y +config ARCH_SUPPORTS_DEBUG_PAGEALLOC + def_bool y + config SYS_SUPPORTS_HUGETLBFS def_bool y diff --git a/arch/riscv/mm/pageattr.c b/arch/riscv/mm/pageattr.c index 7be6cd67e2ef..728759eb530a 100644 --- a/arch/riscv/mm/pageattr.c +++ b/arch/riscv/mm/pageattr.c @@ -172,3 +172,16 @@ int set_direct_map_default_noflush(struct page *page) return walk_page_range(&init_mm, start, end, &pageattr_ops, &masks); } + +void __kernel_map_pages(struct page *page, int numpages, int enable) +{ + if (!debug_pagealloc_enabled()) + return; + + if (enable) + __set_memory((unsigned long)page_address(page), numpages, + __pgprot(_PAGE_PRESENT), __pgprot(0)); + else + __set_memory((unsigned long)page_address(page), numpages, + __pgprot(0), __pgprot(_PAGE_PRESENT)); +} -- 2.25.1