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=-17.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI, 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 C6A36C433DB for ; Wed, 10 Mar 2021 15:28:31 +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 67B6964F6A for ; Wed, 10 Mar 2021 15:28:31 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 67B6964F6A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org 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: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=Ra0Q/hYXi9TRYoDiUg5OwhujDqAy7zlbwK/A/t3bxIM=; b=jarbaN/3tyT18U74HaJR8aZbx vi+mmQiaeUvrtywqxuijLPr6lApPeUXBTpehAX+Pdn4ZGxNO+gJwIyJO/TtI/V+qteCvIRO/BoguL ApP88Ri5e2HTjC7pFYzmjvkEHeGnpINqbwrgJNDJhYnuqBsgm4kUJ/p6NbV9UVlwPFctfdCf5ue8p F1gSvsOEmJ975uxrQN7bh5GyxIBVtn9S/EbKTV8lDeIV9eHtIFkPf20RiNL7AX0YsZQ7w84hbTTdz gNRrqpfJfu2HvBF8waRoQjQ9L95DRaPCqcDuPYWpFN57Q8UamNhNrjjjLh1LoWxFUtvRhEY6aKv1V dsX6y0+mA==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lK0k8-0076lq-8M; Wed, 10 Mar 2021 15:27:24 +0000 Received: from mail.kernel.org ([198.145.29.99]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lK0jy-0076jN-2R for linux-arm-kernel@lists.infradead.org; Wed, 10 Mar 2021 15:27:16 +0000 Received: from disco-boy.misterjones.org (disco-boy.misterjones.org [51.254.78.96]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id B309964F96; Wed, 10 Mar 2021 15:27:12 +0000 (UTC) Received: from 78.163-31-62.static.virginmediabusiness.co.uk ([62.31.163.78] helo=why.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94) (envelope-from ) id 1lK0jv-000n3G-1P; Wed, 10 Mar 2021 15:27:11 +0000 From: Marc Zyngier To: kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org Cc: James Morse , Julien Thierry , Suzuki K Poulose , Mark Rutland , Will Deacon , qperret@google.com, kernel-team@android.com Subject: [PATCH 4/4] KVM: arm64: Force SCTLR_EL2.WXN when running nVHE Date: Wed, 10 Mar 2021 15:26:56 +0000 Message-Id: <20210310152656.3821253-5-maz@kernel.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210310152656.3821253-1-maz@kernel.org> References: <20210310152656.3821253-1-maz@kernel.org> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 62.31.163.78 X-SA-Exim-Rcpt-To: kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org, james.morse@arm.com, julien.thierry.kdev@gmail.com, suzuki.poulose@arm.com, mark.rutland@arm.com, will@kernel.org, qperret@google.com, kernel-team@android.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210310_152714_377397_B68E9BC5 X-CRM114-Status: GOOD ( 13.19 ) 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 As the EL2 nVHE object is nicely split into sections and that we already differenciating permissions for data and code, we can enable SCTLR_EL2.WXN so that we don't have to worry about misconfiguration of the page tables. Flip the WXN bit and get the ball running! Signed-off-by: Marc Zyngier --- arch/arm64/include/asm/sysreg.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h index 9d1aef631646..cc17f7d487ed 100644 --- a/arch/arm64/include/asm/sysreg.h +++ b/arch/arm64/include/asm/sysreg.h @@ -580,7 +580,8 @@ #define SCTLR_ELx_M (BIT(0)) #define SCTLR_EL2_FLAGS (SCTLR_ELx_M | SCTLR_ELx_A | SCTLR_ELx_C | \ - SCTLR_ELx_SA | SCTLR_ELx_I | SCTLR_ELx_IESB) + SCTLR_ELx_SA | SCTLR_ELx_I | SCTLR_ELx_IESB | \ + SCTLR_ELx_WXN) /* SCTLR_EL2 specific flags. */ #define SCTLR_EL2_RES1 ((BIT(4)) | (BIT(5)) | (BIT(11)) | (BIT(16)) | \ -- 2.29.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel