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 76D56C4332F for ; Wed, 3 Nov 2021 06:28:39 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id 176BA61181 for ; Wed, 3 Nov 2021 06:28:39 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 176BA61181 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 B7B014B163; Wed, 3 Nov 2021 02:28:38 -0400 (EDT) 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 oUY9ZhEPa9Lj; Wed, 3 Nov 2021 02:28:37 -0400 (EDT) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 4274A4B1BF; Wed, 3 Nov 2021 02:28:35 -0400 (EDT) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 9B7AD4B17B for ; Wed, 3 Nov 2021 02:28:34 -0400 (EDT) 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 PDMe-JEVwWVQ for ; Wed, 3 Nov 2021 02:28:33 -0400 (EDT) Received: from mail-pf1-f201.google.com (mail-pf1-f201.google.com [209.85.210.201]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id 96EE14B153 for ; Wed, 3 Nov 2021 02:28:33 -0400 (EDT) Received: by mail-pf1-f201.google.com with SMTP id 134-20020a62198c000000b0047bf0981003so848117pfz.4 for ; Tue, 02 Nov 2021 23:28:33 -0700 (PDT) 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=W1vWCSi6sD57/ju+MVWHrUzS8zlg3LpW8mzLjXGDeDs=; b=rEWlkDyGEepBbZ57FgoY7ltu6LDMAMHAOOx0P/jG/yyYU9fE274fG1o7BMK5p8Jp2e fKv91hIezGvLwOizMBpz+AGj+d7MNMWHzgrQEysT3B7rt4Cp7Hu+m7xk6d2ehFoxHzVf 8ZsFFC+z/yC6oU3DBJCC5pHkNs3qfHXH5hX1KYvrxNfMTfQb5XAKyb1fQNOyJnOzxS0E Ow9wk2a0+f4tCA215T3nAoEa4t5ki9eX3BzTu4su6xHI1ULMqLRc6leSTSVCTDmAW13x zJ7Aej7Nw9Y5mBEo2nNT/L3287ObrbtpP7EDuyzAm/WpYJnwmG2D4adVYA9LvZJp8Dne fUaA== 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=W1vWCSi6sD57/ju+MVWHrUzS8zlg3LpW8mzLjXGDeDs=; b=zbFvacqfilPMyrdnxN8QzNIZHId/9DRJQuDoGctErbBlbAFankJJYPb9p87/CjuPnp h8F7E1cY3Bg7jgjIKJ3/YmZGbDA6QwkwtXYLszOMOvgtwQlHY0NFq4dYiXVLmnhEBCD5 Qa+5kLWj7PhHsBe/DZnVsISc3vv6W2Ab+KG4gD5UqpnIB/dRjwCsqOJ2DBhH7LnQ1pOL PRk3YOkyvH7xeoSMrKL/c4oj9lJXmCXAkMq3o1h/OAKgNhry54lJZst8HIeNXIGZDSOQ HENi9tu/K9scZuSJIFHwfP453KiaLLRfmz44Cz+cATg0whlehgWPmiHYdvm0nrBTYjX4 hX2A== X-Gm-Message-State: AOAM532LSDcc1EuNifLibiui8GwJvmq7VZ/pklBvtNBwM4Ut6cRwUdR+ P2rIxDl2R/vqY8YtUiQ/V8XtnvdwQtc= X-Google-Smtp-Source: ABdhPJxpQrRh12VLHNp/Qx/9xMnEFQ2hpQUSo9QzZqIcUPAIyKeeunNcRbGPMB0s9Ps8/EYxlzsFOQYqYNw= X-Received: from reiji-vws-sp.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:3d59]) (user=reijiw job=sendgmr) by 2002:a17:902:6bc8:b0:13f:8a54:1188 with SMTP id m8-20020a1709026bc800b0013f8a541188mr35966678plt.49.1635920912830; Tue, 02 Nov 2021 23:28:32 -0700 (PDT) Date: Tue, 2 Nov 2021 23:25:15 -0700 In-Reply-To: <20211103062520.1445832-1-reijiw@google.com> Message-Id: <20211103062520.1445832-24-reijiw@google.com> Mime-Version: 1.0 References: <20211103062520.1445832-1-reijiw@google.com> X-Mailer: git-send-email 2.33.1.1089.g2158813163f-goog Subject: [RFC PATCH v2 23/28] 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 99cbfa865864..da6bc87d2d38 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -424,6 +424,17 @@ 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 */ @@ -880,6 +891,10 @@ 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 = { -- 2.33.1.1089.g2158813163f-goog _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm