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[97.113.188.82]) by smtp.gmail.com with ESMTPSA id c4sm11861031pgq.85.2019.02.11.15.53.35 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Mon, 11 Feb 2019 15:53:36 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Date: Mon, 11 Feb 2019 15:52:57 -0800 Message-Id: <20190211235258.542-28-richard.henderson@linaro.org> X-Mailer: git-send-email 2.17.2 In-Reply-To: <20190211235258.542-1-richard.henderson@linaro.org> References: <20190211235258.542-1-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::642 Subject: [Qemu-devel] [PATCH v3 27/28] target/arm: Enable MTE X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, qemu-arm@nongnu.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Richard Henderson --- target/arm/cpu.c | 10 ++++++++++ target/arm/cpu64.c | 1 + 2 files changed, 11 insertions(+) diff --git a/target/arm/cpu.c b/target/arm/cpu.c index decf95de3e..a5599ae19f 100644 --- a/target/arm/cpu.c +++ b/target/arm/cpu.c @@ -206,6 +206,16 @@ static void arm_cpu_reset(CPUState *s) * make no difference to the user-level emulation. */ env->cp15.tcr_el[1].raw_tcr = (3ULL << 37); + /* Enable MTE allocation tags. */ + env->cp15.hcr_el2 |= HCR_ATA; + env->cp15.scr_el3 |= SCR_ATA; + env->cp15.sctlr_el[1] |= SCTLR_ATA0; + /* Enable synchronous tag check failures. */ + env->cp15.sctlr_el[1] |= 1ull << 38; +#ifdef TARGET_AARCH64 + /* Set MTE seed to non-zero value, otherwise RandomTag fails. */ + env->cp15.rgsr_el1 = 0x123400; +#endif #else /* Reset into the highest available EL */ if (arm_feature(env, ARM_FEATURE_EL3)) { diff --git a/target/arm/cpu64.c b/target/arm/cpu64.c index 53a7d92c95..7bd761b8f5 100644 --- a/target/arm/cpu64.c +++ b/target/arm/cpu64.c @@ -352,6 +352,7 @@ static void aarch64_max_initfn(Object *obj) t = cpu->isar.id_aa64pfr1; t = FIELD_DP64(t, ID_AA64PFR1, BT, 1); + t = FIELD_DP64(t, ID_AA64PFR1, MTE, 2); cpu->isar.id_aa64pfr1 = t; t = cpu->isar.id_aa64mmfr1;