From nobody Mon Feb 9 20:31:50 2026 Delivered-To: importer@patchew.org Received-SPF: none (zoho.com: 192.237.175.120 is neither permitted nor denied by domain of lists.xenproject.org) client-ip=192.237.175.120; envelope-from=xen-devel-bounces@lists.xenproject.org; helo=lists.xenproject.org; Authentication-Results: mx.zohomail.com; spf=none (zoho.com: 192.237.175.120 is neither permitted nor denied by domain of lists.xenproject.org) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org ARC-Seal: i=1; a=rsa-sha256; t=1565631104; cv=none; d=zoho.com; s=zohoarc; b=HMHJfB7itOk1F668C6eaAZx/a+YQNWw+mYLEzhF1yK6e6y0szmx93YIkGTBxQYl6SyvCVMe//ODrBQK0Goy5P09JknBoQPDFMWAFKGd4jv6RixhpyxNN5PCRQ3oUc0XHysBb5NsPWc07h1UYBpbnI/VPInHg/jhXbGqW84VVLMc= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1565631104; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To:ARC-Authentication-Results; bh=NUE/1p5Sow7PaM/gxco4h1fyZ4YFzPuhzqHez7gtG9A=; b=SftZPExFRVcnCtEWORJtzM6HlRFnd6CSaBmTPyavzXvx4Oy5s4n9JUrClVxZ8tekXnUflkTWGlty7DVmXUv1mEul0PfHrlhYZ5d4vrPRiinw832IFo3dYL1w7zqnFM9xl/C/lM3puA2HWBZIAB10L1fHYKTy8PTH6IScuxUipkk= ARC-Authentication-Results: i=1; mx.zoho.com; spf=none (zoho.com: 192.237.175.120 is neither permitted nor denied by domain of lists.xenproject.org) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Return-Path: Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) by mx.zohomail.com with SMTPS id 1565631104771361.09911052190955; Mon, 12 Aug 2019 10:31:44 -0700 (PDT) Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1hxE9d-0006qh-1i; Mon, 12 Aug 2019 17:30:45 +0000 Received: from [172.99.69.81] (helo=us1-rack-iad1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1hxE9b-0006oz-Lm for xen-devel@lists.xenproject.org; Mon, 12 Aug 2019 17:30:43 +0000 Received: from foss.arm.com (unknown [217.140.110.172]) by us1-rack-iad1.inumbo.com (Halon) with ESMTP id e911ec08-bd26-11e9-984b-bf171714a9dd; Mon, 12 Aug 2019 17:30:42 +0000 (UTC) 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 A2A8515AB; Mon, 12 Aug 2019 10:30:42 -0700 (PDT) Received: from e108454-lin.cambridge.arm.com (e108454-lin.cambridge.arm.com [10.1.196.50]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id F09C13F706; Mon, 12 Aug 2019 10:30:41 -0700 (PDT) X-Inumbo-ID: e911ec08-bd26-11e9-984b-bf171714a9dd From: Julien Grall To: xen-devel@lists.xenproject.org Date: Mon, 12 Aug 2019 18:30:08 +0100 Message-Id: <20190812173019.11956-18-julien.grall@arm.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20190812173019.11956-1-julien.grall@arm.com> References: <20190812173019.11956-1-julien.grall@arm.com> Subject: [Xen-devel] [PATCH v3 17/28] xen/arm32: head: Document enable_mmu() X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Julien Grall , Stefano Stabellini , Volodymyr Babchuk MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" Document the behavior and the main registers usage within enable_mmu(). Signed-off-by: Julien Grall Reviewed-by: Stefano Stabellini --- Changes in v3: - Add Stefano's acked-by Changes in v2: - Patch added --- xen/arch/arm/arm32/head.S | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/xen/arch/arm/arm32/head.S b/xen/arch/arm/arm32/head.S index 83f8774e2a..f8603051e4 100644 --- a/xen/arch/arm/arm32/head.S +++ b/xen/arch/arm/arm32/head.S @@ -423,6 +423,13 @@ virtphys_clash: b fail ENDPROC(create_page_tables) =20 +/* + * Turn on the Data Cache and the MMU. The function will return on the 1:1 + * mapping. In other word, the caller is responsible to switch to the runt= ime + * mapping. + * + * Clobbers r0 - r3 + */ enable_mmu: PRINT("- Turning on paging -\r\n") =20 --=20 2.11.0 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel