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[2001:8b0:1d0::2]) by smtp.gmail.com with ESMTPSA id l16-20020adffe90000000b002b8fe58d6desm12245202wrr.62.2023.01.30.10.25.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 30 Jan 2023 10:25:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:from:to:cc:subject:date:message-id :reply-to; bh=dmGYMqKT6htGJ/lTyLu1tD0GGum+71lym1RaJ3XxWLg=; b=H1y2mzdOHOSORIQzj9iahYah96m2hGwyd6xypXMOvmgTru8xwnE5zFV8LchVpO30lA U/Jam26NFhMQNJQSsBrpKRfVQIXe4y7W2ImwaUXpi5b1J7o1nLw0NMsl7S/cAfe73DmX kA3Lc1uiSUzSwDh33nbodFqtJwl4EJGypkVXUQy/CnFWP9tu1V1/u155kp9WrOIRdMCD QayWnPSqsuFVrZgs+meJYwZif/f93f0HkCLHK+UE7dD9PhF/PqipXZrGMxJMAe8nKfk1 L2zRt9+AzbHZJrqb24/nSoL+ojGP+tcz2lVrhjn4oZCgPRq99FEBOY5Dt8YWzCaJIP5O pGHA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=dmGYMqKT6htGJ/lTyLu1tD0GGum+71lym1RaJ3XxWLg=; b=EnT1/QghExnuQ7rmkNSzaVmwc/Ld+eh1uA/m3REOLhdK2iaB0vG54yyNS+OKM6Gk4M bCE5kqw/XGBqtIGIk6CXEsvIm0XIgn8LJG+vxHqrbEDFQMiZARk4gqXJ10nAiTRcHLzE 3JHolTAe8u40M+PUekATmux0wg/qSxnP20+jMwg9+4qbaesHxGiJ6v7MERSIFlHQ2arF lvjRM4nQzce3YbT5PTRYS6aVSuBtWE6/lt4j53+a5f+F0zQ4dGKq2fd8ULpWt21hXEIz kKpKcq4nSShGH5nsjHPEw0Y0ILzLvdgjK3kUzejjPkY8YtBiVq4/Meh0q8CwEP3Mhkrm 7O9A== X-Gm-Message-State: AO0yUKV7YEKsNd8kcpNXYaJCKb0JEc2Njpi+b5I2UuELlNcJEfJ9SwLc p+pnmchubJt5xbM2Y8sk8xXWmEd/g9tKcZLr X-Google-Smtp-Source: AK7set+c6hH8F7IPrNYZuDy33uks9oDtnkBFSm0fgpJoiNFSYvghKwXphhKaTjH+qgtydm3kOWEJSQ== X-Received: by 2002:a5d:4dc1:0:b0:2bf:b2fe:a2ca with SMTP id f1-20020a5d4dc1000000b002bfb2fea2camr21536087wru.20.1675103108515; Mon, 30 Jan 2023 10:25:08 -0800 (PST) From: Peter Maydell To: qemu-arm@nongnu.org, qemu-devel@nongnu.org Subject: [PATCH v2 07/23] target/arm: Disable HSTR_EL2 traps if EL2 is not enabled Date: Mon, 30 Jan 2023 18:24:43 +0000 Message-Id: <20230130182459.3309057-8-peter.maydell@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230130182459.3309057-1-peter.maydell@linaro.org> References: <20230130182459.3309057-1-peter.maydell@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer2=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::435; envelope-from=peter.maydell@linaro.org; helo=mail-wr1-x435.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer2=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer2=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1675103339430100012 Content-Type: text/plain; charset="utf-8" The HSTR_EL2 register is not supposed to have an effect unless EL2 is enabled in the current security state. We weren't checking for this, which meant that if the guest set up the HSTR_EL2 register we would incorrectly trap even for accesses from Secure EL0 and EL1. Add the missing checks. (Other places where we look at HSTR_EL2 for the not-in-v8A bits TTEE and TJDBX are already checking that we are in NS EL0 or EL1, so there we alredy know EL2 is enabled.) Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson Message-id: 20230127175507.2895013-8-peter.maydell@linaro.org --- target/arm/helper.c | 2 +- target/arm/op_helper.c | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/target/arm/helper.c b/target/arm/helper.c index 6f6772d8e04..66966869218 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -11716,7 +11716,7 @@ static CPUARMTBFlags rebuild_hflags_a32(CPUARMState= *env, int fp_el, DP_TBFLAG_A32(flags, VFPEN, 1); } =20 - if (el < 2 && env->cp15.hstr_el2 && + if (el < 2 && env->cp15.hstr_el2 && arm_is_el2_enabled(env) && (arm_hcr_el2_eff(env) & (HCR_E2H | HCR_TGE)) !=3D (HCR_E2H | HCR_T= GE)) { DP_TBFLAG_A32(flags, HSTR_ACTIVE, 1); } diff --git a/target/arm/op_helper.c b/target/arm/op_helper.c index 7797a137af6..dec03310ad5 100644 --- a/target/arm/op_helper.c +++ b/target/arm/op_helper.c @@ -663,6 +663,7 @@ const void *HELPER(access_check_cp_reg)(CPUARMState *en= v, uint32_t key, * we only need to check here for traps from EL0. */ if (!is_a64(env) && arm_current_el(env) =3D=3D 0 && ri->cp =3D=3D 15 && + arm_is_el2_enabled(env) && (arm_hcr_el2_eff(env) & (HCR_E2H | HCR_TGE)) !=3D (HCR_E2H | HCR_T= GE)) { uint32_t mask =3D 1 << ri->crn; =20 --=20 2.34.1