From patchwork Fri Jan 27 11:27:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steven Price X-Patchwork-Id: 49240 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:eb09:0:0:0:0:0 with SMTP id s9csp782058wrn; Fri, 27 Jan 2023 03:30:57 -0800 (PST) X-Google-Smtp-Source: AMrXdXstUBiRBAtHXzLiTgrZwJaxvOVIqZasZOgCmwDYMNoQ4p4TxVp9RhzHSnLtsDZnXJjZmDID X-Received: by 2002:a17:902:8309:b0:192:5ec4:6656 with SMTP id bd9-20020a170902830900b001925ec46656mr35696575plb.3.1674819056955; Fri, 27 Jan 2023 03:30:56 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1674819056; cv=none; d=google.com; s=arc-20160816; b=YfPJ3JNEZ6rQ70hAeKb5fcQnN1KF7QINisbXmliFqEeq6wq+IsmtkWmmg7niyjks+Y vMPWGDkwbf8v0GzirUrK7DwNgiOmqVs0KQ5ocCuQvupUkqi6rI3iPMmgKvDzf0QLITvE Z93xiasaQ0Pte/GKGeTuLsqEKZxuyuct5YzB4ewPH8n24PerFD6z19jAd+X53aDma+Fk Q9rqCinSNUj7jy3Si/5Asv0loHeVHD1hg+pCg9uMLx33NRRLQUEd0zn72dd3LO7KmVhC zXMk0F9UsrCGiZC+fYxlXtmnjG6qYbIJO6deAEDNiDZWIHKTgjB72ixkJcuR/WSCefuo Bk2Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=aNW/jW/zcZb0X9zZ0EGV7IURArZuKNEloHawawvdNaQ=; b=kj4PAXfTumvvubxeKhFe09eOuX1KNAFtA3hlSV092WAwfz1BmVD78rljBsK/gdk4Lt jy5QAQUWQbICozy2j54cJI2Rt4yvhexhOHt3KfyO3vMq+28hq6QaovOi629nQk24Nsg3 MuCyRG4Fqxfj7GTwfLgi90HtYDu+lPTERsyJWzbMjkA+kzvUoIBCnnSknXlwU8CWUaCZ oLq5fD0Fz3H6AhYb8ySNaZ+qQCDrHsj3VMgTojdeXfJNZqHDRLXroZEMAddzNfD68nQb 4isyTWG7ft/aL5tUtVWF5YF/5jNGx059/MlK2s61JOh5gPLg16CEnjzBiqt9n7R7GVf8 ROhw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=arm.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id q14-20020a170902a3ce00b0019338acc12bsi4137140plb.343.2023.01.27.03.30.44; Fri, 27 Jan 2023 03:30:56 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=arm.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233149AbjA0LaR (ORCPT + 99 others); Fri, 27 Jan 2023 06:30:17 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38032 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232997AbjA0L3n (ORCPT ); Fri, 27 Jan 2023 06:29:43 -0500 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id C7FB0402F6 for ; Fri, 27 Jan 2023 03:28:57 -0800 (PST) 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 3D7DB15DB; Fri, 27 Jan 2023 03:29:09 -0800 (PST) Received: from e122027.cambridge.arm.com (e122027.cambridge.arm.com [10.1.35.16]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 297B53F64C; Fri, 27 Jan 2023 03:28:25 -0800 (PST) From: Steven Price To: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org Cc: Steven Price , Catalin Marinas , Ard Biesheuvel , Marc Zyngier , Will Deacon , Suzuki K Poulose , James Morse , Oliver Upton , Zenghui Yu , linux-kernel@vger.kernel.org, Joey Gouly , Alexandru Elisei , Christoffer Dall , Fuad Tabba , linux-coco@lists.linux.dev Subject: [RFC PATCH 06/14] fixmap: Allow architecture overriding set_fixmap_io Date: Fri, 27 Jan 2023 11:27:50 +0000 Message-Id: <20230127112758.37891-7-steven.price@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230127112758.37891-1-steven.price@arm.com> References: <20230127112248.136810-1-suzuki.poulose@arm.com> <20230127112758.37891-1-steven.price@arm.com> MIME-Version: 1.0 X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_NONE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1756175067454505422?= X-GMAIL-MSGID: =?utf-8?q?1756175067454505422?= From: Suzuki K Poulose For a realm guest it will be necessary to ensure IO mappings are shared so that the VMM can emulate the device. The following patch will provide an implementation of set_fixmap_io for arm64 setting the shared bit (if in a realm). Signed-off-by: Suzuki K Poulose Signed-off-by: Steven Price --- include/asm-generic/fixmap.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/asm-generic/fixmap.h b/include/asm-generic/fixmap.h index 8cc7b09c1bc7..c5ce0368c1ee 100644 --- a/include/asm-generic/fixmap.h +++ b/include/asm-generic/fixmap.h @@ -94,8 +94,10 @@ static inline unsigned long virt_to_fix(const unsigned long vaddr) /* * Some fixmaps are for IO */ +#ifndef set_fixmap_io #define set_fixmap_io(idx, phys) \ __set_fixmap(idx, phys, FIXMAP_PAGE_IO) +#endif #define set_fixmap_offset_io(idx, phys) \ __set_fixmap_offset(idx, phys, FIXMAP_PAGE_IO)