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[81.2.115.148]) by smtp.gmail.com with ESMTPSA id z9sm2242317wma.4.2020.09.01.08.19.18 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 01 Sep 2020 08:19:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=uzjObAYNgbbOg5233R77daXvzkwZjkTSAH8Bwsy7iRw=; b=hveNNSlMTrfzgd9uk0Fisi/DoDqlHnT3DtvP8qGdle3Sq2vPZPlHMncDAxZeCmPJx8 8TW6VixlLl5XoRJ3y6Ca3JxouwFIFL4I1jsJ7HGDlSAnm8KzknD3j7EYY+WFUeMiSu5V vWcRcebalRpa+Q+5fwJ6hBFyoyj1A6UQVHfS14f9ImD0VMALoYdJsAoUuT1VjlCSJ16/ dhLmyrlyejRDwgY3xAQ+k5yERhDcx8DvEQH9nY7oifBln9I82DtW5IafylJoxAmWukD8 n+wRL2e5tiIi9PgDuSjpKUo3SQuqfgy7ReJEWaG5c9+0Se6h5rwaS1z/sInSzfwoNmk/ 21dA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=uzjObAYNgbbOg5233R77daXvzkwZjkTSAH8Bwsy7iRw=; b=nFn2AQvRK0UT3lPLKBMXl0HJpp4IlTigSJjMZhOTehpeUV3yiR0Sq6+/KrzTlO6Oc1 R48qAGJztCpxd1kUA4aC/2Z8MIEBH+P8hEGTSNqgO7Ul+kUEVuPWq9mF8fFLwn0X9TEO InAtot3DB+PO9cAGViot4bBFowaCsprHllVOXjLSHtao7puph3CmIOf+olEKvgSu3NBe IgyZMTod990wDu4o0Ybo2OD4lK/u5ufNX/SvFP1rTJ+IvNkTEd2aWICr4Hykt+EDa6uU HQgML2Gwog04WWrFL/JwfBZo2wazMoGFBjIqegoD29MZLIJ6n/6WXCPgOpkgavlWOaKy fhOg== X-Gm-Message-State: AOAM532uyN5h+u6QhzRZcVStslAeCgl3j0FXPHPJMyx+YOcefZT3na1M motG5w2l8u/DFDDg/X3Sktzo6IcgkxHvI27v X-Google-Smtp-Source: ABdhPJwN9fpeNQlnfxjJcnRQ9TsTjk1j4Tso5oikQLpVGhMZS8yzTv0aNX4gFvIVPHUeVd67EAYUfA== X-Received: by 2002:adf:ab5a:: with SMTP id r26mr2407043wrc.194.1598973559547; Tue, 01 Sep 2020 08:19:19 -0700 (PDT) From: Peter Maydell To: qemu-devel@nongnu.org Subject: [PULL 44/47] target/arm: Enable FP16 in '-cpu max' Date: Tue, 1 Sep 2020 16:18:20 +0100 Message-Id: <20200901151823.29785-45-peter.maydell@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200901151823.29785-1-peter.maydell@linaro.org> References: <20200901151823.29785-1-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+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::443; envelope-from=peter.maydell@linaro.org; helo=mail-wr1-x443.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" Set the MVFR1 ID register FPHP and SIMDHP fields to indicate that our "-cpu max" has v8.2-FP16. Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson Message-id: 20200828183354.27913-46-peter.maydell@linaro.org --- target/arm/cpu.c | 3 ++- target/arm/cpu64.c | 10 ++++------ 2 files changed, 6 insertions(+), 7 deletions(-) diff --git a/target/arm/cpu.c b/target/arm/cpu.c index 6b382fcd60e..c179e0752da 100644 --- a/target/arm/cpu.c +++ b/target/arm/cpu.c @@ -2143,7 +2143,8 @@ static void arm_max_initfn(Object *obj) cpu->isar.id_isar6 =3D t; =20 t =3D cpu->isar.mvfr1; - t =3D FIELD_DP32(t, MVFR1, FPHP, 2); /* v8.0 FP support */ + t =3D FIELD_DP32(t, MVFR1, FPHP, 3); /* v8.2-FP16 */ + t =3D FIELD_DP32(t, MVFR1, SIMDHP, 2); /* v8.2-FP16 */ cpu->isar.mvfr1 =3D t; =20 t =3D cpu->isar.mvfr2; diff --git a/target/arm/cpu64.c b/target/arm/cpu64.c index dd696183dfb..3c2b3d95993 100644 --- a/target/arm/cpu64.c +++ b/target/arm/cpu64.c @@ -704,12 +704,10 @@ static void aarch64_max_initfn(Object *obj) u =3D FIELD_DP32(u, ID_DFR0, PERFMON, 5); /* v8.4-PMU */ cpu->isar.id_dfr0 =3D u; =20 - /* - * FIXME: We do not yet support ARMv8.2-fp16 for AArch32 yet, - * so do not set MVFR1.FPHP. Strictly speaking this is not legal, - * but it is also not legal to enable SVE without support for FP16, - * and enabling SVE in system mode is more useful in the short ter= m. - */ + u =3D cpu->isar.mvfr1; + u =3D FIELD_DP32(u, MVFR1, FPHP, 3); /* v8.2-FP16 */ + u =3D FIELD_DP32(u, MVFR1, SIMDHP, 2); /* v8.2-FP16 */ + cpu->isar.mvfr1 =3D u; =20 #ifdef CONFIG_USER_ONLY /* For usermode -cpu max we can use a larger and more efficient DCZ --=20 2.20.1