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=-14.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 88B95C433B4 for ; Tue, 18 May 2021 12:21:26 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (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 4BE6D60FF1 for ; Tue, 18 May 2021 12:21:26 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4BE6D60FF1 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+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=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References:Message-ID: Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=DO13QhJzVsf6t9vNaV+aLrDtsEs0ONLycgxIuomuzE4=; b=SeKSbxIko5VwL8d5A8KB12jQq /qHRQshGdRkykMx0+0XSVAkJM3JhK9zR/4NxcSHtJAmi5EQWdYyCkEhq5eIKfRrcVNGSG/+ixnq/5 nQ1La8MAVhzLpbTExA7BQSks2zQc8E7YKdz+HF/isZ0w83HMUSOlWg6HozcMScqQs7YXUJY+fC3Ap Lmnkl6WGCfDvlJz+Q7Vdu3f5RSFaAQr/Ny7Ct+emgPx6J3MA1+g8svxd/PEkW0OWWLdOeW7rfuP/0 3M60z4veZRR6mvyAlFMFlbgrH/TinNMKbIJQ/AdFeolIHkFbej0hTReCY58wz/IKk2y7deemxIyLM xOS/waY+g==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1liyhP-000k1O-6O; Tue, 18 May 2021 12:19:47 +0000 Received: from bombadil.infradead.org ([2607:7c80:54:e::133]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1liyhL-000k0g-4m for linux-arm-kernel@desiato.infradead.org; Tue, 18 May 2021 12:19:43 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=NJ8AmBizQLEmFcU6EARI/45R7i5kO0IF76OdAbZPuAo=; b=YrI84FZ56cGONyJxSqC9SOfQnx ZGsz3CLFHd6yFdOMYJFFL/8AGiZgZ+0grDchmN4qWiUrXArSl4B5qN9coil7OfucGssnRw51DFAXd Y03ue3SujX/OXWZvbs6rjQmaiw04fQLbNkVIuEAu8XNHHjEnRkWSfrISRmHX5gc+/0LfG1ThhDzk9 UTIEqEpJvpHkKhiXvGMfy0FEAGItcfhRvN2QWboV9YsbU5vxnRYMjYnB0L2cP6FM7wTAbgf+rcRhi JxYKCs+ss9+//jJpkZ5Tjnk9WxmJQVYC5A0OMxa60ZurQ12vApOfrsBC87bQCzBphzK3QmagSBrtG n0YKT/jA==; Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1liyhI-00EdxW-8x for linux-arm-kernel@lists.infradead.org; Tue, 18 May 2021 12:19:41 +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 AB5B66D; Tue, 18 May 2021 05:19:38 -0700 (PDT) Received: from C02TD0UTHF1T.local (unknown [10.57.6.226]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id EC26A3F73B; Tue, 18 May 2021 05:19:37 -0700 (PDT) Date: Tue, 18 May 2021 13:19:35 +0100 From: Mark Rutland To: Dong Aisheng Cc: linux-arm-kernel@lists.infradead.org, dongas86@gmail.com Subject: Re: [PATCH 3/4] arm64: mm: drop unused __pa(__idmap_text_start) Message-ID: <20210518121935.GH82842@C02TD0UTHF1T.local> References: <20210518101405.1048860-1-aisheng.dong@nxp.com> <20210518101405.1048860-4-aisheng.dong@nxp.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210518101405.1048860-4-aisheng.dong@nxp.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210518_051940_389496_CAAB106D X-CRM114-Status: GOOD ( 17.08 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, May 18, 2021 at 06:14:04PM +0800, Dong Aisheng wrote: > x5 is not used in the following map_memory. Instead, > __pa(__idmap_text_start) is stored in x3 which is used later. > > Signed-off-by: Dong Aisheng It might be worth noting that this hasn't been used since commit: 0370b31e48454d8c ("arm64: Extend early page table code to allow for larger kernels") Either way: Acked-by: Mark Rutland Mark. > --- > arch/arm64/kernel/head.S | 1 - > 1 file changed, 1 deletion(-) > > diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S > index b70db34458ec..d266b4c6287d 100644 > --- a/arch/arm64/kernel/head.S > +++ b/arch/arm64/kernel/head.S > @@ -354,7 +354,6 @@ SYM_FUNC_START_LOCAL(__create_page_tables) > #endif > 1: > ldr_l x4, idmap_ptrs_per_pgd > - mov x5, x3 // __pa(__idmap_text_start) > adr_l x6, __idmap_text_end // __pa(__idmap_text_end) > > map_memory x0, x1, x3, x6, x7, x3, x4, x10, x11, x12, x13, x14 > -- > 2.25.1 > > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel