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([2607:fb90:5fe1:b497:51bb:ba21:d1a7:eac2]) by smtp.gmail.com with ESMTPSA id e4-20020a056870c0c400b000e686d1389esm1780002oad.56.2022.05.06.11.03.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 06 May 2022 11:03:16 -0700 (PDT) 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 :mime-version:content-transfer-encoding; bh=YgPJJBWxd6UwNbu8I9UhpjXUvb+eh/ewRL4C5SYoXZc=; b=WSobL0sMyT0KRvtk81VICiJ55j7byygjWb0YuNKo6+3ZeAIHZgBJGD+vtK2aRILFVF Enwa8Jl2JMU/mZTbbZR1vwERz3HKhq1U7qa3w1vAYXTq6XHh246GAngBh6HhJLiRqIXQ 9QDW0rc4NKh69IYbrSfEjxtwEUzm4+3OZysDAakq7zBdeKOleE5GJcrcyChTIK6AjCRu RAS1MAhwqTuiWPh8F9AMSHfNCrfbkh61CXUvZlgBx18bRwYrRmk3ch3sePTFwizMcNNg 6XsWV01C9twC/Sl31VOgMTWJ120Ysfd3e83bewHYb2z6MQ57NGc/9zMqjfl6OCnkzxRx +1Pg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=YgPJJBWxd6UwNbu8I9UhpjXUvb+eh/ewRL4C5SYoXZc=; b=plEa1kYRD9ARln42Y4Sgws/JaeA1EuTtmv6L1/mDvP1rGQf7P5MdejrG5EJSkCe2yZ QKX2dNElY87Z7QVqE9jYVAm+dXcPklHNsNi+0KhIwhEKjvUrsLGqXpDyHCiCesvcqBqc DwgfUa+Jlnxf2VhwsDjiQmMA3OVz+e0gbqqU1D67KRPae3JO0dVBjMcI4OvVkVT5Gg+Y mWZ7JXxnT+aTF1fz7ii6fcRuFwaQhsSH0ndoiNChCLuXTwH2Pv1RGk+E6f42+CSgkqVC DWhI0I1t06JpJvPAniE8XpofGWZouialjJ0Rd+9qUwtBPE1R0BWKR6z8/9fcHjO6zHyi 3MDA== X-Gm-Message-State: AOAM530YMyiJIy5qMuWfZFKYb4SqcpqMAIfuyFqmny0IYKEYUjcq3tU+ 71zrkLDXu2lH2P5ClX7m1BoLdo7uikZpbRFD X-Google-Smtp-Source: ABdhPJxWp9+0kpCYTqM5a1wMcLX6wzRa7vYHMLhh26KJHMeNaF2NJx+uh/WpYwFkn0KKS9mdX5vn+g== X-Received: by 2002:a05:6808:2095:b0:325:7ad8:6d18 with SMTP id s21-20020a056808209500b003257ad86d18mr5560151oiw.58.1651860197336; Fri, 06 May 2022 11:03:17 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org, Peter Maydell Subject: [PATCH v6 19/24] target/arm: Enable FEAT_CSV2 for -cpu max Date: Fri, 6 May 2022 13:02:37 -0500 Message-Id: <20220506180242.216785-20-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220506180242.216785-1-richard.henderson@linaro.org> References: <20220506180242.216785-1-richard.henderson@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=2607:f8b0:4864:20::229; envelope-from=richard.henderson@linaro.org; helo=mail-oi1-x229.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, T_SCC_BODY_TEXT_LINE=-0.01 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+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1651861328225100001 Content-Type: text/plain; charset="utf-8" This extension concerns branch speculation, which TCG does not implement. Thus we can trivially enable this feature. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- v2: Update emulation.rst --- docs/system/arm/emulation.rst | 1 + target/arm/cpu64.c | 1 + target/arm/cpu_tcg.c | 1 + 3 files changed, 3 insertions(+) diff --git a/docs/system/arm/emulation.rst b/docs/system/arm/emulation.rst index b200012d89..b2a3e2a437 100644 --- a/docs/system/arm/emulation.rst +++ b/docs/system/arm/emulation.rst @@ -12,6 +12,7 @@ the following architecture extensions: - FEAT_BBM at level 2 (Translation table break-before-make levels) - FEAT_BF16 (AArch64 BFloat16 instructions) - FEAT_BTI (Branch Target Identification) +- FEAT_CSV2 (Cache speculation variant 2) - FEAT_DIT (Data Independent Timing instructions) - FEAT_DPB (DC CVAP instruction) - FEAT_Debugv8p2 (Debug changes for v8.2) diff --git a/target/arm/cpu64.c b/target/arm/cpu64.c index 10410619f9..25fe74f928 100644 --- a/target/arm/cpu64.c +++ b/target/arm/cpu64.c @@ -748,6 +748,7 @@ static void aarch64_max_initfn(Object *obj) t =3D FIELD_DP64(t, ID_AA64PFR0, SVE, 1); t =3D FIELD_DP64(t, ID_AA64PFR0, SEL2, 1); /* FEAT_SEL2 */ t =3D FIELD_DP64(t, ID_AA64PFR0, DIT, 1); /* FEAT_DIT */ + t =3D FIELD_DP64(t, ID_AA64PFR0, CSV2, 1); /* FEAT_CSV2 */ cpu->isar.id_aa64pfr0 =3D t; =20 t =3D cpu->isar.id_aa64pfr1; diff --git a/target/arm/cpu_tcg.c b/target/arm/cpu_tcg.c index c5cf7efe95..762b961707 100644 --- a/target/arm/cpu_tcg.c +++ b/target/arm/cpu_tcg.c @@ -68,6 +68,7 @@ void aa32_max_features(ARMCPU *cpu) cpu->isar.id_mmfr4 =3D t; =20 t =3D cpu->isar.id_pfr0; + t =3D FIELD_DP32(t, ID_PFR0, CSV2, 2); /* FEAT_CVS2 */ t =3D FIELD_DP32(t, ID_PFR0, DIT, 1); /* FEAT_DIT */ t =3D FIELD_DP32(t, ID_PFR0, RAS, 1); /* FEAT_RAS */ cpu->isar.id_pfr0 =3D t; --=20 2.34.1