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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CD84CC433FE for ; Wed, 17 Nov 2021 06:53:52 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id 6F32461BD3 for ; Wed, 17 Nov 2021 06:53:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 6F32461BD3 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.cs.columbia.edu Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 239DB4B1AD; Wed, 17 Nov 2021 01:53:52 -0500 (EST) X-Virus-Scanned: at lists.cs.columbia.edu Authentication-Results: mm01.cs.columbia.edu (amavisd-new); dkim=softfail (fail, message has been altered) header.i=@google.com Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 9BU5dfaRMo1l; Wed, 17 Nov 2021 01:53:50 -0500 (EST) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 2382D4B1C8; Wed, 17 Nov 2021 01:53:49 -0500 (EST) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 75B214B0D7 for ; Wed, 17 Nov 2021 01:53:48 -0500 (EST) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id b2c9-OwyOjAy for ; Wed, 17 Nov 2021 01:53:47 -0500 (EST) Received: from mail-pj1-f74.google.com (mail-pj1-f74.google.com [209.85.216.74]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id CCCD24B1A3 for ; Wed, 17 Nov 2021 01:53:45 -0500 (EST) Received: by mail-pj1-f74.google.com with SMTP id mn13-20020a17090b188d00b001a64f277c1eso2631978pjb.2 for ; Tue, 16 Nov 2021 22:53:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=RcpZ70HWqU0SXh1JgWU046j8p1JVlfrsxLvOnh+ny5w=; b=LbXvb9O/MjigBpj3Q1x1la7lfju5hUWJ9TCDDM/Td5aHN+uf0MArRvDL6IXDAGsAYO 1qkC7lXJQbWXm6LWhlCZdiuD7RJJBvl8caI2psMUC1eT7mAMEjHA2BHA8Canef5mwt+s AHPDTPURjEgHiRebfgGqDADsiynKYh/zcoZ8u2PAU+3i4Cyo9u7uBIvvkDK8+wV7KfOg AOjPWj7Iru5eyBljExW4+88J3f/eMpEMCsWsTXdRmMTBeSdj9C2rZkCK2INb3GMbqBjB UOJvRCAGgqj3yTfI0jOwqB/5K58OA7pNhcqCuiwr4meSLJsuXv1vC+HzzVW8cXmmJGgD +AQg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=RcpZ70HWqU0SXh1JgWU046j8p1JVlfrsxLvOnh+ny5w=; b=Qae2YK38HNWu3Ede1L+NgxIwrYKNZbkQu52TPvJVw/n3Y4QBFax7JFv91wZQQeIXk3 URNxZeRjsQyB30RsZdp6MuQDSt5jDWiaBXmsQ1ourHe105/alAyjR3v2l/VU8ooN5u8s 5Cj9Dtw8E9oK5lPBPQ1W0n3CiBBzBG9tdKfo1k0AXTYR5QSa4PwZ5zlgq9FT6I7Z3HAk O3S+USAsVBIw9AvgnY03G4YTBwBMD1x7yi+9sFDYUV9UOYjspmbwrmebR3sw2nAIZB+z gq+CUu+V0eyleiLu+z39VkzhHM83v855uWcN/kj24WTDSyEMrAD2JlTGs6WNTiuShyqf a76A== X-Gm-Message-State: AOAM530caU9d/xaMeVHfcx5MzDgD+xB0DlL1a2ibKvZbfR74cKS9nb6k 0zZF63qLFzKCbehfXiw4c6sPAcUQ5Q0= X-Google-Smtp-Source: ABdhPJw5QD14fDi96csV3HLcCihYEQmTicWAkaNNtkp4LgwsRxcvxf5w6HB4o8EsJXz+BBU2q7qWUTFRJGg= X-Received: from reiji-vws-sp.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:3d59]) (user=reijiw job=sendgmr) by 2002:a17:90a:284f:: with SMTP id p15mr314255pjf.1.1637132024716; Tue, 16 Nov 2021 22:53:44 -0800 (PST) Date: Tue, 16 Nov 2021 22:43:53 -0800 In-Reply-To: <20211117064359.2362060-1-reijiw@google.com> Message-Id: <20211117064359.2362060-24-reijiw@google.com> Mime-Version: 1.0 References: <20211117064359.2362060-1-reijiw@google.com> X-Mailer: git-send-email 2.34.0.rc1.387.gb447b232ab-goog Subject: [RFC PATCH v3 23/29] KVM: arm64: Trap disabled features of ID_AA64PFR1_EL1 From: Reiji Watanabe To: Marc Zyngier , kvmarm@lists.cs.columbia.edu Cc: kvm@vger.kernel.org, Will Deacon , Peter Shier , Paolo Bonzini , linux-arm-kernel@lists.infradead.org X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu Add feature_config_ctrl for MTE, which is indicated in ID_AA64PFR1_EL1, to program configuration register to trap the guest's using the feature when it is not exposed to the guest. Signed-off-by: Reiji Watanabe --- arch/arm64/kvm/sys_regs.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index 42db8cf18fbb..73d992ba6e90 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -426,6 +426,17 @@ static struct feature_config_ctrl ftr_ctrl_amu = { .cfg_val = CPTR_EL2_TAM, }; +/* For ID_AA64PFR1_EL1 */ +static struct feature_config_ctrl ftr_ctrl_mte = { + .ftr_reg = SYS_ID_AA64PFR1_EL1, + .ftr_shift = ID_AA64PFR1_MTE_SHIFT, + .ftr_min = ID_AA64PFR1_MTE_EL0, + .ftr_signed = FTR_UNSIGNED, + .cfg_reg = VCPU_HCR_EL2, + .cfg_mask = (HCR_TID5 | HCR_DCT | HCR_ATA), + .cfg_val = HCR_TID5, +}; + struct id_reg_info { u32 sys_reg; /* Register ID */ u64 sys_val; /* Sanitized system value */ @@ -904,6 +915,10 @@ static struct id_reg_info id_aa64pfr1_el1_info = { .init = init_id_aa64pfr1_el1_info, .validate = validate_id_aa64pfr1_el1, .get_reset_val = get_reset_id_aa64pfr1_el1, + .trap_features = &(const struct feature_config_ctrl *[]) { + &ftr_ctrl_mte, + NULL, + }, }; static struct id_reg_info id_aa64isar0_el1_info = { -- 2.34.0.rc1.387.gb447b232ab-goog _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm