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=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 D72E7C63777 for ; Thu, 26 Nov 2020 12:12:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7E0BA20B80 for ; Thu, 26 Nov 2020 12:12:20 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="vBt34Bck" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388905AbgKZMMM (ORCPT ); Thu, 26 Nov 2020 07:12:12 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44580 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731806AbgKZMMK (ORCPT ); Thu, 26 Nov 2020 07:12:10 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 76F12C0617A7; Thu, 26 Nov 2020 04:12:10 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Type:MIME-Version:References: Subject:Cc:To:From:Date:Message-ID:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:In-Reply-To; bh=WXAvlj8sBk2RdzEpcLbJIMj6YxrEqCvZ8aLKdoJEykM=; b=vBt34BckTzuxfPdRs6WzS6jl4U VMOgpb4TEclazpBWZFkBbC8RDZzxfyaCCsqZTH10v33Y9GOCdAchDmgd6bC8otUGCCPj1bOt0oACC u10faOlb2zRaRVENzRze4mruA5lUFRcTwut9JpdIhzKkqPyyAet1vZRoUhpTwN3KsL6Xuh2qhDYsb MNxFGsfN+kP/94UUc8oj7U/AWLpIgnf6qmwssN0L3COcdvoIaJNwgXkMSzyjn0zvb9KjalQIBX1Fq 5utgHyiFydFkKzl2tMDsnnLgOlK/BgCGb/3/drFLdfgrh8UTj+JUn/oJ6fDra3kDabeuw3NgnPvj5 IcE5bbnA==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kiG7c-0000OT-Ol; Thu, 26 Nov 2020 12:11:36 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 1342330280E; Thu, 26 Nov 2020 13:11:34 +0100 (CET) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 0) id EBF8E25F0FB42; Thu, 26 Nov 2020 13:11:33 +0100 (CET) Message-ID: <20201126121121.102580109@infradead.org> User-Agent: quilt/0.66 Date: Thu, 26 Nov 2020 13:01:16 +0100 From: Peter Zijlstra To: kan.liang@linux.intel.com, mingo@kernel.org, acme@kernel.org, mark.rutland@arm.com, alexander.shishkin@linux.intel.com, jolsa@redhat.com, eranian@google.com Cc: christophe.leroy@csgroup.eu, npiggin@gmail.com, linuxppc-dev@lists.ozlabs.org, mpe@ellerman.id.au, will@kernel.org, willy@infradead.org, aneesh.kumar@linux.ibm.com, sparclinux@vger.kernel.org, davem@davemloft.net, catalin.marinas@arm.com, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, ak@linux.intel.com, dave.hansen@intel.com, kirill.shutemov@linux.intel.com, peterz@infradead.org Subject: [PATCH v2 2/6] mm: Introduce pXX_leaf_size() References: <20201126120114.071913521@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org A number of architectures have non-pagetable aligned huge/large pages. For such architectures a leaf can actually be part of a larger entry. Provide generic helpers to determine the size of a page-table leaf. Signed-off-by: Peter Zijlstra (Intel) --- include/linux/pgtable.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) --- a/include/linux/pgtable.h +++ b/include/linux/pgtable.h @@ -1536,4 +1536,20 @@ typedef unsigned int pgtbl_mod_mask; #define pmd_leaf(x) 0 #endif +#ifndef pgd_leaf_size +#define pgd_leaf_size(x) (1ULL << PGDIR_SHIFT) +#endif +#ifndef p4d_leaf_size +#define p4d_leaf_size(x) P4D_SIZE +#endif +#ifndef pud_leaf_size +#define pud_leaf_size(x) PUD_SIZE +#endif +#ifndef pmd_leaf_size +#define pmd_leaf_size(x) PMD_SIZE +#endif +#ifndef pte_leaf_size +#define pte_leaf_size(x) PAGE_SIZE +#endif + #endif /* _LINUX_PGTABLE_H */