Message ID | 20190731154603.41797-3-steven.price@arm.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
Return-Path: <linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org> 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 0403D1399 for <patchwork-linux-arm@patchwork.kernel.org>; Wed, 31 Jul 2019 15:46:39 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E205522A6F for <patchwork-linux-arm@patchwork.kernel.org>; Wed, 31 Jul 2019 15:46:38 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D62E7228C9; Wed, 31 Jul 2019 15:46:38 +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 7A1E222362 for <patchwork-linux-arm@patchwork.kernel.org>; Wed, 31 Jul 2019 15:46:38 +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:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version: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=qgk6+AI0MNNU/y9mqqmJDy7K0lcVx3PJchV+Mu5rWxE=; b=Ss8vuVcDmDIZ5v w+zmcfXdTjbjNrZ5HOW/JEl0jq93UsqOvEOKg7VW9dAO8pNE0KCTuTWLd4rQgk7MfYj/eHLrWREUv 8P4bCZ1NNpNRPEaVG8sbVjMUOff2+BbTk3UTJYjjN89rV1efbqnOqSh35oMrLWtegdiUtKlDnAZiN LEvNHKn5O8CfJfHvLc3TE1eUlMXmDe7r7J+AQZS4eLwxY0lB/rttr2veXmtC8qY4rufvaA4vmsAM6 3Q/9Pz0KHERsndI7XCNQY94g534WN5J4L/RlsvKIoJ7e8APeNkHQt3uYNK/W27UmhpvWwSeoIE6l3 HmJo0BIWyGj3bdBS962Q==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hsqoH-0005dx-95; Wed, 31 Jul 2019 15:46:37 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hsqny-0005FK-0P; Wed, 31 Jul 2019 15:46:19 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 8040E1576; Wed, 31 Jul 2019 08:46:17 -0700 (PDT) Received: from e112269-lin.arm.com (e112269-lin.cambridge.arm.com [10.1.196.133]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id B52053F694; Wed, 31 Jul 2019 08:46:14 -0700 (PDT) From: Steven Price <steven.price@arm.com> To: linux-mm@kvack.org Subject: [PATCH v10 02/22] arc: mm: Add p?d_leaf() definitions Date: Wed, 31 Jul 2019 16:45:43 +0100 Message-Id: <20190731154603.41797-3-steven.price@arm.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190731154603.41797-1-steven.price@arm.com> References: <20190731154603.41797-1-steven.price@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190731_084618_107557_BF010EEC X-CRM114-Status: GOOD ( 11.12 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: <linux-arm-kernel.lists.infradead.org> List-Unsubscribe: <http://lists.infradead.org/mailman/options/linux-arm-kernel>, <mailto:linux-arm-kernel-request@lists.infradead.org?subject=unsubscribe> List-Archive: <http://lists.infradead.org/pipermail/linux-arm-kernel/> List-Post: <mailto:linux-arm-kernel@lists.infradead.org> List-Help: <mailto:linux-arm-kernel-request@lists.infradead.org?subject=help> List-Subscribe: <http://lists.infradead.org/mailman/listinfo/linux-arm-kernel>, <mailto:linux-arm-kernel-request@lists.infradead.org?subject=subscribe> Cc: Mark Rutland <Mark.Rutland@arm.com>, Peter Zijlstra <peterz@infradead.org>, Catalin Marinas <catalin.marinas@arm.com>, Dave Hansen <dave.hansen@linux.intel.com>, "H. Peter Anvin" <hpa@zytor.com>, Will Deacon <will@kernel.org>, "Liang, Kan" <kan.liang@linux.intel.com>, x86@kernel.org, Steven Price <steven.price@arm.com>, Ingo Molnar <mingo@redhat.com>, linux-snps-arc@lists.infradead.org, Arnd Bergmann <arnd@arndb.de>, =?utf-8?b?SsOpcsO0bWUgR2xpc3Nl?= <jglisse@redhat.com>, Borislav Petkov <bp@alien8.de>, Andy Lutomirski <luto@kernel.org>, Thomas Gleixner <tglx@linutronix.de>, linux-arm-kernel@lists.infradead.org, Ard Biesheuvel <ard.biesheuvel@linaro.org>, Vineet Gupta <vgupta@synopsys.com>, linux-kernel@vger.kernel.org, James Morse <james.morse@arm.com>, Andrew Morton <akpm@linux-foundation.org> Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org> Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP |
Series |
Generic page walk and ptdump
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expand
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diff --git a/arch/arc/include/asm/pgtable.h b/arch/arc/include/asm/pgtable.h index 1d87c18a2976..8c425cf796db 100644 --- a/arch/arc/include/asm/pgtable.h +++ b/arch/arc/include/asm/pgtable.h @@ -274,6 +274,7 @@ static inline void pmd_set(pmd_t *pmdp, pte_t *ptep) #define pmd_none(x) (!pmd_val(x)) #define pmd_bad(x) ((pmd_val(x) & ~PAGE_MASK)) #define pmd_present(x) (pmd_val(x)) +#define pmd_leaf(x) (pmd_val(pmd) & _PAGE_HW_SZ) #define pmd_clear(xp) do { pmd_val(*(xp)) = 0; } while (0) #define pte_page(pte) pfn_to_page(pte_pfn(pte))
walk_page_range() is going to be allowed to walk page tables other than those of user space. For this it needs to know when it has reached a 'leaf' entry in the page tables. This information will be provided by the p?d_leaf() functions/macros. For arc, we only have two levels, so only pmd_leaf() is needed. CC: Vineet Gupta <vgupta@synopsys.com> CC: linux-snps-arc@lists.infradead.org Signed-off-by: Steven Price <steven.price@arm.com> --- arch/arc/include/asm/pgtable.h | 1 + 1 file changed, 1 insertion(+)