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=-1.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,URIBL_DBL_ABUSE_MALW autolearn=no 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 E53AFC35247 for ; Tue, 4 Feb 2020 01:35:09 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id A6E1B2087E for ; Tue, 4 Feb 2020 01:35:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="a5M4EoaI" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A6E1B2087E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 4F0A16B0289; Mon, 3 Feb 2020 20:35:09 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 478466B028B; Mon, 3 Feb 2020 20:35:09 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 38DED6B028C; Mon, 3 Feb 2020 20:35:09 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0169.hostedemail.com [216.40.44.169]) by kanga.kvack.org (Postfix) with ESMTP id 1893D6B0289 for ; Mon, 3 Feb 2020 20:35:09 -0500 (EST) Received: from smtpin04.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id C05FA2DFA for ; Tue, 4 Feb 2020 01:35:08 +0000 (UTC) X-FDA: 76450726296.04.blow74_fc28529a7621 X-HE-Tag: blow74_fc28529a7621 X-Filterd-Recvd-Size: 4425 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf13.hostedemail.com (Postfix) with ESMTP for ; Tue, 4 Feb 2020 01:35:08 +0000 (UTC) Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 731972086A; Tue, 4 Feb 2020 01:35:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1580780107; bh=yLtPbJY/tZ8qE3ApoNs4FYPq1l/dMKuDCTfHRtPn7zI=; h=Date:From:To:Subject:In-Reply-To:From; b=a5M4EoaIx6Nhj8X/I8sM/D0Lphs7nxlm8SSyXPH8+w42VuPpFyQl8u8Ku4iHMlV0g RXKWDQ9yS7snUppiuLY799com+Qx2en8lYbHxl2FEbcF3b2x2PswtXs+cRoQyfpltn 3LiPTdOTKvyKkzsVveDUIypUu75SEKx+D9QUaAMQ= Date: Mon, 03 Feb 2020 17:35:06 -0800 From: Andrew Morton To: akpm@linux-foundation.org, alex@ghiti.fr, aou@eecs.berkeley.edu, ard.biesheuvel@linaro.org, arnd@arndb.de, benh@kernel.crashing.org, borntraeger@de.ibm.com, bp@alien8.de, catalin.marinas@arm.com, dave.hansen@linux.intel.com, davem@davemloft.net, gor@linux.ibm.com, heiko.carstens@de.ibm.com, hpa@zytor.com, james.morse@arm.com, jglisse@redhat.com, jhogan@kernel.org, kan.liang@linux.intel.com, linux-mm@kvack.org, linux@armlinux.org.uk, luto@kernel.org, mark.rutland@arm.com, mingo@redhat.com, mm-commits@vger.kernel.org, mpe@ellerman.id.au, paul.burton@mips.com, paul.walmsley@sifive.com, paulus@samba.org, peterz@infradead.org, ralf@linux-mips.org, steven.price@arm.com, tglx@linutronix.de, torvalds@linux-foundation.org, vgupta@synopsys.com, will@kernel.org, zong.li@sifive.com Subject: [patch 25/67] arc: mm: add p?d_leaf() definitions Message-ID: <20200204013506.Vu71UJ63q%akpm@linux-foundation.org> In-Reply-To: <20200203173311.6269a8be06a05e5a4aa08a93@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Steven Price Subject: arc: mm: add p?d_leaf() definitions 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. Link: http://lkml.kernel.org/r/20191218162402.45610-3-steven.price@arm.com Signed-off-by: Steven Price Acked-by: Vineet Gupta Cc: Albert Ou Cc: Alexandre Ghiti Cc: Andy Lutomirski Cc: Ard Biesheuvel Cc: Arnd Bergmann Cc: Benjamin Herrenschmidt Cc: Borislav Petkov Cc: Catalin Marinas Cc: Christian Borntraeger Cc: Dave Hansen Cc: David S. Miller Cc: Heiko Carstens Cc: "H. Peter Anvin" Cc: Ingo Molnar Cc: James Hogan Cc: James Morse Cc: Jerome Glisse Cc: "Liang, Kan" Cc: Mark Rutland Cc: Michael Ellerman Cc: Paul Burton Cc: Paul Mackerras Cc: Paul Walmsley Cc: Peter Zijlstra Cc: Ralf Baechle Cc: Russell King Cc: Thomas Gleixner Cc: Vasily Gorbik Cc: Will Deacon Cc: Zong Li Signed-off-by: Andrew Morton --- arch/arc/include/asm/pgtable.h | 1 + 1 file changed, 1 insertion(+) --- a/arch/arc/include/asm/pgtable.h~arc-mm-add-pd_leaf-definitions +++ a/arch/arc/include/asm/pgtable.h @@ -273,6 +273,7 @@ static inline void pmd_set(pmd_t *pmdp, #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(x) & _PAGE_HW_SZ) #define pmd_clear(xp) do { pmd_val(*(xp)) = 0; } while (0) #define pte_page(pte) pfn_to_page(pte_pfn(pte)) _