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[97.113.7.119]) by smtp.gmail.com with ESMTPSA id d22sm3789713pjd.2.2019.12.03.14.53.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 03 Dec 2019 14:53:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=zIHslnUoGfikMY/tOISXoUEjJ6B+SC/aIId9fLfQVxs=; b=CnJtkF8ZTefan5dRJ/FlnlnsN9Bl085KXHD9S5KUxhOY3kcVUZUr+mjfmIqvdDG8Fx Yrcg5wVcSTYVV60HTxBczy6HtmryhUMJXN+YEHiaHQMnVkgil2Zx/v40INj2ASwyttsg aFj8KH/r/LPwZAJ4O+IwkMvsDJE29RYsPAZU1yVtkvEcIReLQkRa9UngxFjp7Bb31gQC vz8d+U9mUdDLc3HXrJTTlS7fG/XKHpyZDZgZQQe5K1s2YyW6LYOxv2EczLRXivGgFGQ+ Gr7EhiJNwZHpN8KKWLvv7DG6K0CNjzeJmGkaiOs0NT5/h68HS4Rj2xklSJgz+Xt3h8kK 76Lw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=zIHslnUoGfikMY/tOISXoUEjJ6B+SC/aIId9fLfQVxs=; b=JoRTPdOYhSoyzzfje8G99xoWbtztc5j5QzuzMkYz1xVwKJgd43xGZZcVHs3tSguQae pw2F+oBeaETxM9cvt3Ui8CHUztD98cBoRQdNiJSeWY+ukDCkfQakIbz3ranbReKGSvhO U8O8k4dSgRr9J9OfMB+aQHNAwkx7RD0b3bJWh1QU9Xbz4PpkxMT25Obk9fWmi9+x+aX6 mQMDrb3JoBvAsFnqIOrRiVthMKpvi4KBbMd7QIoFdEW3hjcscKdhyhmLMdWvwkUGSOga 4c/o6TlUEZzuiYcKPGo+NPxnQBustWQajR5Kmz3CjacrXC6HIPsZKagFo0ihahr5UlZD asZg== X-Gm-Message-State: APjAAAUwHiRsvc0HDDVIOVgkWDJo9UhCleDYZJK0UnLXrKTWVNboAysK 8i++yj5Azfh3YEKbplGerXwsiGceWM0= X-Google-Smtp-Source: APXvYqxEdNOANe2spkGfjIoKhF3O9uFG0a+GWUvvoCQ38xCbbmjgBiCXOGjoOFSOAeLgyYBa9krcIA== X-Received: by 2002:a17:902:9a8d:: with SMTP id w13mr355806plp.330.1575413625366; Tue, 03 Dec 2019 14:53:45 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH 08/11] target/arm: Enforce PAN semantics in get_S1prot Date: Tue, 3 Dec 2019 14:53:30 -0800 Message-Id: <20191203225333.17055-9-richard.henderson@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191203225333.17055-1-richard.henderson@linaro.org> References: <20191203225333.17055-1-richard.henderson@linaro.org> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::102c X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" If we have a PAN-enforcing mmu_idx, set prot =3D=3D 0 if user_rw !=3D 0. Signed-off-by: Richard Henderson Reviewed-by: Peter Maydell --- target/arm/internals.h | 13 +++++++++++++ target/arm/helper.c | 3 +++ 2 files changed, 16 insertions(+) diff --git a/target/arm/internals.h b/target/arm/internals.h index 2408953031..ab3b436379 100644 --- a/target/arm/internals.h +++ b/target/arm/internals.h @@ -893,6 +893,19 @@ static inline bool regime_is_secure(CPUARMState *env, = ARMMMUIdx mmu_idx) } } =20 +static inline bool regime_is_pan(CPUARMState *env, ARMMMUIdx mmu_idx) +{ + switch (mmu_idx) { + case ARMMMUIdx_Stage1_E1_PAN: + case ARMMMUIdx_EL10_1_PAN: + case ARMMMUIdx_EL20_2_PAN: + case ARMMMUIdx_SE1_PAN: + return true; + default: + return false; + } +} + /* Return the FSR value for a debug exception (watchpoint, hardware * breakpoint or BKPT insn) targeting the specified exception level. */ diff --git a/target/arm/helper.c b/target/arm/helper.c index 6c65dd799e..a1dbafb9b2 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -9444,6 +9444,9 @@ static int get_S1prot(CPUARMState *env, ARMMMUIdx mmu= _idx, bool is_aa64, if (is_user) { prot_rw =3D user_rw; } else { + if (user_rw && regime_is_pan(env, mmu_idx)) { + return 0; + } prot_rw =3D simple_ap_to_rw_prot_is_user(ap, false); } =20 --=20 2.17.1