From patchwork Wed Jun 5 09:29:56 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steven Price X-Patchwork-Id: 13686482 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id CF3A7C25B76 for ; Wed, 5 Jun 2024 09:30:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=KheMdtwVuMoX/cD6Nd8GJnXml7e9x0+qQnrYl4l8BHk=; b=nd7LkwqisGwErg /x9hAJ6U4OWMHzdTIm1Ifb+uUO91ulNoWsTLeHVeSrYqY9g9dTTk2OCMQlKZmUojOR6hFcNc2tkm1 TwqKaf1ESXGkOhslp0mYwyvMIgIZE/FMfAAJ4IFYt+SsDycJU/4agiSluQwmuQXm0/CX2Adj9UxVF GI2+QB2+nHnFHLr0B3iwSBo6v9SyLsWgAlefotu8ImLAz0kXJRkK96qDcsCE9AIk6O94mTJ6bzAxd A3SW+g6LW0TDoIJk3v3CZnQz6TwTxThcxarYY12kz5UkJZ+fgc/EUArhPjX2+R3VeZeJt1Qi2PBxT zURqGvHWstush33LCsCQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sEmye-00000005OmE-0DDZ; Wed, 05 Jun 2024 09:30:40 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sEmya-00000005OjK-1C57 for linux-arm-kernel@lists.infradead.org; Wed, 05 Jun 2024 09:30:37 +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 4C793FEC; Wed, 5 Jun 2024 02:31:00 -0700 (PDT) Received: from e122027.arm.com (unknown [10.57.39.129]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 3F2943F792; Wed, 5 Jun 2024 02:30:32 -0700 (PDT) From: Steven Price To: kvm@vger.kernel.org, kvmarm@lists.linux.dev Cc: Steven Price , Catalin Marinas , Marc Zyngier , Will Deacon , James Morse , Oliver Upton , Suzuki K Poulose , Zenghui Yu , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Joey Gouly , Alexandru Elisei , Christoffer Dall , Fuad Tabba , linux-coco@lists.linux.dev, Ganapatrao Kulkarni Subject: [PATCH v3 04/14] arm64: Mark all I/O as non-secure shared Date: Wed, 5 Jun 2024 10:29:56 +0100 Message-Id: <20240605093006.145492-5-steven.price@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240605093006.145492-1-steven.price@arm.com> References: <20240605093006.145492-1-steven.price@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240605_023036_418635_7906D85B X-CRM114-Status: UNSURE ( 8.95 ) X-CRM114-Notice: Please train this message. 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org All I/O is by default considered non-secure for realms. As such mark them as shared with the host. Co-developed-by: Suzuki K Poulose Signed-off-by: Suzuki K Poulose Signed-off-by: Steven Price --- arch/arm64/include/asm/io.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arm64/include/asm/io.h b/arch/arm64/include/asm/io.h index 4ff0ae3f6d66..0a219c03750b 100644 --- a/arch/arm64/include/asm/io.h +++ b/arch/arm64/include/asm/io.h @@ -277,12 +277,12 @@ static inline void __const_iowrite64_copy(void __iomem *to, const void *from, #define ioremap_prot ioremap_prot -#define _PAGE_IOREMAP PROT_DEVICE_nGnRE +#define _PAGE_IOREMAP (PROT_DEVICE_nGnRE | PROT_NS_SHARED) #define ioremap_wc(addr, size) \ - ioremap_prot((addr), (size), PROT_NORMAL_NC) + ioremap_prot((addr), (size), (PROT_NORMAL_NC | PROT_NS_SHARED)) #define ioremap_np(addr, size) \ - ioremap_prot((addr), (size), PROT_DEVICE_nGnRnE) + ioremap_prot((addr), (size), (PROT_DEVICE_nGnRnE | PROT_NS_SHARED)) /* * io{read,write}{16,32,64}be() macros