Message ID | 20190722154210.42799-2-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 B026C1398 for <patchwork-linux-arm@patchwork.kernel.org>; Mon, 22 Jul 2019 15:43:12 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9DFFB27F86 for <patchwork-linux-arm@patchwork.kernel.org>; Mon, 22 Jul 2019 15:43:12 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9222E283BB; Mon, 22 Jul 2019 15:43:12 +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 0003727FB3 for <patchwork-linux-arm@patchwork.kernel.org>; Mon, 22 Jul 2019 15:43:10 +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=A8czAzSMEeDXZP dIOjGQRuNOpESZVYIKamZqvONtBBX7rLuxIUsTLDpLtosTG2H8ntaA8ryxeAFcZ0ZGPMGhz7wrwu7 liYID4sYWM8zBtXw6YQ+1KQ8pXcAGlSg7jj5wwUxDnIoQ7Z67IIGM78Ebo1wvfLF7cCvy3pCjCF5C lopfdyVKzRmghXpNZVxhS8lPi3Hgt9SywHJfb3teCbb+JgAMZFeA+2lTcqJro3t3vr9hXHEy+DRnW /moSBPnjCJV5Q7m8iR6Tq4LVKpsDGUxatSkSWwuFB7iBY60zI8w1/eEBjq2kzDCqnDTai69BWuq/y VIHrI7r8m6EnkxG29IbQ==; 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 1hpaSu-000262-M1; Mon, 22 Jul 2019 15:43:04 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hpaSI-0001eT-Vq; Mon, 22 Jul 2019 15:42:28 +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 86D4E1509; Mon, 22 Jul 2019 08:42:26 -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 BA1883F694; Mon, 22 Jul 2019 08:42:23 -0700 (PDT) From: Steven Price <steven.price@arm.com> To: linux-mm@kvack.org Subject: [PATCH v9 01/21] arc: mm: Add p?d_leaf() definitions Date: Mon, 22 Jul 2019 16:41:50 +0100 Message-Id: <20190722154210.42799-2-steven.price@arm.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190722154210.42799-1-steven.price@arm.com> References: <20190722154210.42799-1-steven.price@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190722_084227_120672_9B0EED0F X-CRM114-Status: GOOD ( 10.82 ) 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
|
expand
|
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(+)