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=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 52380C33CA2 for ; Fri, 10 Jan 2020 10:46:43 +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 2382D2087F for ; Fri, 10 Jan 2020 10:46:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="kJJ3V2eS"; dkim=pass (2048-bit key) header.d=sifive.com header.i=@sifive.com header.b="JcJvFnOk" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2382D2087F 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:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Cc:MIME-Version:Content-Type: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=LhPJp+PAwva7bPHMH862TV/8J9fNaEOj4YyHAq59Kg8=; b=kJJ3V2eSJ2WPRGMDOiRRix35u HmGowIre/zKCNseqQkYGBxfJy7v/RkT86byIx6Y1J2SRAg+gnRkHeZepQKRe1KYTpH6SPRMZsmDxE Z36Lw6O6FxYwc3Rjryuiruf7dIA6hYuBEnx1MhVLg72x1h0HB2FlWEyzdyVloxWYD6IglfJ9KL7Zf zJ5rqTmEoqNs9Nuaybxd7aseiW30JJfK5Oy9PDlQdDPqa5r+q4MGzstf3z7bJGakIaRPzyekTGfZq DxZKKy6gviCkC6PmOjKzS6Op24g9KHlas+sYnSwx0cc0zqb7tQ/MH4reqi1ZX3MxRUKg1vthvXoMq zVxqouRPg==; 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 1iproQ-0007MA-5r; Fri, 10 Jan 2020 10:46:42 +0000 Received: from mail-pl1-x642.google.com ([2607:f8b0:4864:20::642]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iproM-0007K6-Jr for linux-riscv@lists.infradead.org; Fri, 10 Jan 2020 10:46:40 +0000 Received: by mail-pl1-x642.google.com with SMTP id az3so699296plb.11 for ; Fri, 10 Jan 2020 02:46:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; h=from:to:subject:date:message-id:in-reply-to:references:in-reply-to :references; bh=LhPJp+PAwva7bPHMH862TV/8J9fNaEOj4YyHAq59Kg8=; b=JcJvFnOkAVeVV9XrhUVdhbhf5yYoi7T7LuWmU1eyQuEIS8cjao55ztp8J2hmKsZERu 7ySGrS8OoHgH0Aw5tYKzVadcXyLU2DVpBAMKYuF0TTn1BFOSbg8vdTs9/3iqdDc65XQs c6IjGBNIzk8C7jGJoIKOKNqfpuNH2po2onG67zoY2sT7UhFn3elCxWo0HZBvadCoTFju c8Sc12UpEskHnz74klkv9hrvvPkl2rDeatvyWYcMC5p1ySBjVa3DKhA/1ieYK0RZZ3O2 jP2RjSE9Ib8CJCB9rgZxE8OfMsetjRgBjGzorTj6U7vi4i8D2ucgJd/K7Ec9B0L5fA86 8T+Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:in-reply-to:references; bh=LhPJp+PAwva7bPHMH862TV/8J9fNaEOj4YyHAq59Kg8=; b=jdhVi/TnSYD33HPEA+pGuhw1eaRWXIybdInrstJ3/B7yRK9Oxmkd5hDCYNdZtT4aBX ChNT1VbhqcpIbEXS/arsblNqtjiVhS3tuxvhktk82q9KiroDKtxKqeTv9T3OjN8NUjYI nYtjEcPXOmNbPlTXkkWmNp1xhDizlVJ2dHnio+1btC1tNGKahjovAVkqPVkNLdcZzUDX m7qmeHD9amQF9vEHrkASH6sYERa27nTopOE5VboZyAIXHxb8fEDRsV8qmD241m8ouNmI YAISX9jc6yNn3ZSZEqkx7NwlFk4dQJfa74aF7fUhIv5uWwjPhSy4AsTIa1pgIReXeD7p Pnbg== X-Gm-Message-State: APjAAAWJK+bULeMfGx5b5i0CocDLDRRh1mi8GwCMMvVtJHf+JGLgl5Xw 9A3yDvnuJ9UgOOV+Vngut5McRA== X-Google-Smtp-Source: APXvYqxvFezduVV4IwfVnEBIdXpJcuKRSwEUMeh6oea69WBD3hgikon+ZODyeGzzks3V+W+ht/b4MQ== X-Received: by 2002:a17:90a:ac0f:: with SMTP id o15mr3859733pjq.133.1578653198083; Fri, 10 Jan 2020 02:46:38 -0800 (PST) Received: from greentime-VirtualBox.internal.sifive.com (220-132-236-182.HINET-IP.hinet.net. [220.132.236.182]) by smtp.gmail.com with ESMTPSA id e10sm2590901pfj.7.2020.01.10.02.46.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 10 Jan 2020 02:46:37 -0800 (PST) From: Greentime Hu To: greentime.hu@sifive.com, greentime@kernel.org, anup@brainfault.org, palmer@dabbelt.com, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, rppt@linux.ibm.com, gkulkarni@marvell.com, will@kernel.org, catalin.marinas@arm.com, mark.rutland@arm.com, paul.walmsley@sifive.com, hch@lst.de Subject: [RFC PATCH v2 1/4] riscv: Add support pte_protnone and pmd_protnone if CONFIG_NUMA_BALANCING Date: Fri, 10 Jan 2020 18:46:24 +0800 Message-Id: <1ff7e57f16cb43c8816b90716a872b8f0f101c42.1577694824.git.greentime.hu@sifive.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200110_024638_649464_C6A6EE3E X-CRM114-Status: UNSURE ( 7.68 ) 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: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+infradead-linux-riscv=archiver.kernel.org@lists.infradead.org These two functions are used to distinguish between PROT_NONENUMA protections and hinting fault protections. Signed-off-by: Greentime Hu --- arch/riscv/include/asm/pgtable.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h index 36ae01761352..9650a4ce073e 100644 --- a/arch/riscv/include/asm/pgtable.h +++ b/arch/riscv/include/asm/pgtable.h @@ -166,6 +166,11 @@ static inline unsigned long pmd_page_vaddr(pmd_t pmd) return (unsigned long)pfn_to_virt(pmd_val(pmd) >> _PAGE_PFN_SHIFT); } +static inline pte_t pmd_pte(pmd_t pmd) +{ + return __pte(pmd_val(pmd)); +} + /* Yields the page frame number (PFN) of a page table entry */ static inline unsigned long pte_pfn(pte_t pte) { @@ -279,6 +284,21 @@ static inline pte_t pte_mkhuge(pte_t pte) return pte; } +#ifdef CONFIG_NUMA_BALANCING +/* + * See the comment in include/asm-generic/pgtable.h + */ +static inline int pte_protnone(pte_t pte) +{ + return (pte_val(pte) & (_PAGE_PRESENT | _PAGE_PROT_NONE)) == _PAGE_PROT_NONE; +} + +static inline int pmd_protnone(pmd_t pmd) +{ + return pte_protnone(pmd_pte(pmd)); +} +#endif + /* Modify page protection bits */ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) { -- 2.17.1