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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 42255C433FF for ; Wed, 7 Aug 2019 15:58:13 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1566622297 for ; Wed, 7 Aug 2019 15:58:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="nkHKRXOy" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1566622297 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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=IkdDJzclW+kvMm9Yltk/+Wf4lCqjIsrop8vrugMCc7c=; b=nkHKRXOybx4X00 ltTKoNDZ/18NrVYCNrvQE9eEF07OdTXyOsFDbGcPPmU2jVvyZbmU4FmdJEILuAKrJQgwvPtRT/ShW UXNMPdS4w2CltmGdXqIUuBBojktguUHhyWIOajqzDExoFYk+oluQeEGfJtKWVrl4KbEi8q9m9SsyY nmDrkFVDiwzUrMOPne45tAqTw6BcCAzJ7Ja83K4m+dXJm2Bt6YxwiTXOCZ0ABf2zdryGtxa6IiR75 vrdYSV/eHqMLlVZ+JOnSIF5kSN1/EiE/VW9yvoU/5V/A0r7890Chdy3oBxpZFYAf+8IkaOCLvypok g/fnpV9uDh0GCMrFmbwA==; 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 1hvOKB-0008La-7z; Wed, 07 Aug 2019 15:58:03 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hvOI9-0006Ph-28 for linux-arm-kernel@lists.infradead.org; Wed, 07 Aug 2019 15:55:59 +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 DFA8D1570; Wed, 7 Aug 2019 08:55:56 -0700 (PDT) Received: from capper-ampere.manchester.arm.com (capper-ampere.manchester.arm.com [10.32.98.74]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id ABB1F3F706; Wed, 7 Aug 2019 08:55:55 -0700 (PDT) From: Steve Capper To: linux-arm-kernel@lists.infradead.org Subject: [PATCH V5 08/12] arm64: mm: Separate out vmemmap Date: Wed, 7 Aug 2019 16:55:20 +0100 Message-Id: <20190807155524.5112-9-steve.capper@arm.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190807155524.5112-1-steve.capper@arm.com> References: <20190807155524.5112-1-steve.capper@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190807_085557_209990_A5F53739 X-CRM114-Status: GOOD ( 13.53 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: crecklin@redhat.com, ard.biesheuvel@linaro.org, catalin.marinas@arm.com, bhsharma@redhat.com, Steve Capper , maz@kernel.org, will@kernel.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org vmemmap is a preprocessor definition that depends on a variable, memstart_addr. In a later patch we will need to expand the size of the VMEMMAP region and optionally modify vmemmap depending upon whether or not hardware support is available for 52-bit virtual addresses. This patch changes vmemmap to be a variable. As the old definition depended on a variable load, this should not affect performance noticeably. Signed-off-by: Steve Capper Reviewed-by: Catalin Marinas --- arch/arm64/include/asm/pgtable.h | 4 ++-- arch/arm64/mm/init.c | 5 +++++ 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index d274ea9a5f86..0eedf8664ecc 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -23,8 +23,6 @@ #define VMALLOC_START (MODULES_END) #define VMALLOC_END (- PUD_SIZE - VMEMMAP_SIZE - SZ_64K) -#define vmemmap ((struct page *)VMEMMAP_START - (memstart_addr >> PAGE_SHIFT)) - #define FIRST_USER_ADDRESS 0UL #ifndef __ASSEMBLY__ @@ -35,6 +33,8 @@ #include #include +extern struct page *vmemmap; + extern void __pte_error(const char *file, int line, unsigned long val); extern void __pmd_error(const char *file, int line, unsigned long val); extern void __pud_error(const char *file, int line, unsigned long val); diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index e752f46d430e..2940221e5519 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -53,6 +53,9 @@ EXPORT_SYMBOL(memstart_addr); s64 physvirt_offset __ro_after_init; EXPORT_SYMBOL(physvirt_offset); +struct page *vmemmap __ro_after_init; +EXPORT_SYMBOL(vmemmap); + phys_addr_t arm64_dma_phys_limit __ro_after_init; #ifdef CONFIG_KEXEC_CORE @@ -320,6 +323,8 @@ void __init arm64_memblock_init(void) physvirt_offset = PHYS_OFFSET - PAGE_OFFSET; + vmemmap = ((struct page *)VMEMMAP_START - (memstart_addr >> PAGE_SHIFT)); + /* * Remove the memory that we will not be able to cover with the * linear mapping. Take care not to clip the kernel which may be -- 2.20.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel