From patchwork Thu Feb 15 10:31:50 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ryan Roberts X-Patchwork-Id: 13557853 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 76B22C48BEB for ; Thu, 15 Feb 2024 10:32:33 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 0B9768D0017; Thu, 15 Feb 2024 05:32:33 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 069A88D0001; Thu, 15 Feb 2024 05:32:33 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id E9CBF8D0017; Thu, 15 Feb 2024 05:32:32 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id D2F0E8D0001 for ; Thu, 15 Feb 2024 05:32:32 -0500 (EST) Received: from smtpin14.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay03.hostedemail.com (Postfix) with ESMTP id 947C8A0F23 for ; Thu, 15 Feb 2024 10:32:32 +0000 (UTC) X-FDA: 81793674144.14.72F3DB2 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by imf28.hostedemail.com (Postfix) with ESMTP id 02D0BC001C for ; Thu, 15 Feb 2024 10:32:30 +0000 (UTC) Authentication-Results: imf28.hostedemail.com; dkim=none; dmarc=pass (policy=none) header.from=arm.com; spf=pass (imf28.hostedemail.com: domain of ryan.roberts@arm.com designates 217.140.110.172 as permitted sender) smtp.mailfrom=ryan.roberts@arm.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1707993151; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=AKllLFpkdBdD4+23+umGEBd3K5r9BpGIsgRkHDi52Cw=; b=18+7daeQT8JIj3R2wSEXpXPeJgdeMoskH6aw0pE8cTxYO1P+wBBcjcJwrZnOL9yS5ShWi7 y14qgJz9aNm3ZvDAqfr1QuB0YRjonGsvRsbtd1nFCfhcDhBdC2GQSAqiyXD3W3L5Rsyi26 wwM09HYVszYUxQOvGt31wjxb4PWJCK8= ARC-Authentication-Results: i=1; imf28.hostedemail.com; dkim=none; dmarc=pass (policy=none) header.from=arm.com; spf=pass (imf28.hostedemail.com: domain of ryan.roberts@arm.com designates 217.140.110.172 as permitted sender) smtp.mailfrom=ryan.roberts@arm.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1707993151; a=rsa-sha256; cv=none; b=hXTq8HjCX0wpt2/vydcP+Gk1ZQMvBANhrBcfD9S5q8I2a54qFZrW7sRw4OnBCXHsMmTClK PmV14CXIh0+RIDpqNEc/L99qwi+3cKNd6v0H4/OzgAH7VybI61n3QLQFiM1kZFYoFGPudH SAVje1fvYF9tds96hQWzCn888zxvOMM= 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 149FD14BF; Thu, 15 Feb 2024 02:33:11 -0800 (PST) Received: from e125769.cambridge.arm.com (e125769.cambridge.arm.com [10.1.196.26]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 0B7CA3F7B4; Thu, 15 Feb 2024 02:32:26 -0800 (PST) From: Ryan Roberts To: Catalin Marinas , Will Deacon , Ard Biesheuvel , Marc Zyngier , James Morse , Andrey Ryabinin , Andrew Morton , Matthew Wilcox , Mark Rutland , David Hildenbrand , Kefeng Wang , John Hubbard , Zi Yan , Barry Song <21cnbao@gmail.com>, Alistair Popple , Yang Shi , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" Cc: Ryan Roberts , linux-arm-kernel@lists.infradead.org, x86@kernel.org, linuxppc-dev@lists.ozlabs.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH v6 03/18] mm: Introduce pte_advance_pfn() and use for pte_next_pfn() Date: Thu, 15 Feb 2024 10:31:50 +0000 Message-Id: <20240215103205.2607016-4-ryan.roberts@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240215103205.2607016-1-ryan.roberts@arm.com> References: <20240215103205.2607016-1-ryan.roberts@arm.com> MIME-Version: 1.0 X-Rspamd-Queue-Id: 02D0BC001C X-Rspam-User: X-Rspamd-Server: rspam02 X-Stat-Signature: kshazpme7n8kz7ypkws3e9udznubpcjw X-HE-Tag: 1707993150-757809 X-HE-Meta: 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 w1oTmdHe a26MEyXAjZ5IejiuGRCY6vTQxjIht9VhAnggnohDJ/vyy98cwXyn+Md5KfMyTS7BYTHVNRiPEVPOgF5+DomAI9LM7FbNtPE1R5Q0j5R4G0gvkIACAi55txEgxn0zmRw0HBrpduhTfQiqejLkpi3qdKq8I9b9zaaL/2N6u5ThMP3teDXmawnlP7N91R1QMd8k20BsmVuusumd/vVSGl7AVDc5Wl3jiHN0YLEzWBCPtwgI/mPHQDs7fK6hMBQuH9AeFOVAA6MQP/dTdPphemkb/DyLEfQ== 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: List-Subscribe: List-Unsubscribe: The goal is to be able to advance a PTE by an arbitrary number of PFNs. So introduce a new API that takes a nr param. Define the default implementation here and allow for architectures to override. pte_next_pfn() becomes a wrapper around pte_advance_pfn(). Follow up commits will convert each overriding architecture's pte_next_pfn() to pte_advance_pfn(). Signed-off-by: Ryan Roberts Acked-by: David Hildenbrand --- include/linux/pgtable.h | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h index 231370e1b80f..b7ac8358f2aa 100644 --- a/include/linux/pgtable.h +++ b/include/linux/pgtable.h @@ -212,14 +212,17 @@ static inline int pmd_dirty(pmd_t pmd) #define arch_flush_lazy_mmu_mode() do {} while (0) #endif - #ifndef pte_next_pfn -static inline pte_t pte_next_pfn(pte_t pte) +#ifndef pte_advance_pfn +static inline pte_t pte_advance_pfn(pte_t pte, unsigned long nr) { - return __pte(pte_val(pte) + (1UL << PFN_PTE_SHIFT)); + return __pte(pte_val(pte) + (nr << PFN_PTE_SHIFT)); } #endif +#define pte_next_pfn(pte) pte_advance_pfn(pte, 1) +#endif + #ifndef set_ptes /** * set_ptes - Map consecutive pages to a contiguous range of addresses.