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[174.21.142.130]) by smtp.gmail.com with ESMTPSA id e14-20020aa78c4e000000b00506475da4cesm9372055pfd.49.2022.04.17.10.48.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 17 Apr 2022 10:48:17 -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=4gebW4IdC/Bc62zWIHS5hydZkGTIlOLeMNTIUwSy2Ks=; b=CetYLbkrh2Emx4+viVrzNk2w06xK1Rh0zkQV/5RcLrJr2HpgyqKgR2xAFCrHXBm9Gh +xQKrxnGaTeocMQFYsn3+hpAl7IcOwCf+UVpYqGx9ENdsRGW3jxvAowQ5kDSIGKpIXBR VyGYdVEyzu1PZ2H/yOsov+XnQD7ChckHXaAvPFhdaAZsd9cGgY3OVVaeI61kqjqmkPrh zLGbLpSyXEdlXBTCEeWU+mBJ6c79GjO7UeonwJ1DCdREvt0Ld1TGAd23smVc6FDjxkqa jcw3M1m8gACwiH5M/+cB/9IVva5br17T8TFx5booqwz4Mfia9yyBfT8ayioPzYWpt6Sj hRlg== 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=4gebW4IdC/Bc62zWIHS5hydZkGTIlOLeMNTIUwSy2Ks=; b=wKp2vN4mxp6dF1aAFtQWptqFJOgzROXfy2NIfDJ+oU4HLklJAjWKvLsLEVtB4NvQ2Z Xe/JPS62Hwbr30BEWnYFnxNwUjHLH9kOB1hMLJ38m4SWRjmn8ROoAxHW5qymwOuD/t65 ds8n9mEXoo2H42j71wAGUtPfAXK3479IeML1xbJuINNBDxfwlgpwe3yfpqeOsJVBps7g 3rCCjDQFCBHpBEzZzLYNAVy1KZArcSBEz8gA/Lm4auwWfJOog+w937h+l70N8lkj9TDy bDp3HYJPc69MpV9ljePP3bZIRttmx6CNkpRkFIRM/jmp4YioTX8p1919WMm1Iv4Aw258 IQOQ== X-Gm-Message-State: AOAM531TqTge3/Aetst0lqyt37NneKgM9njzze2hWxWFQc1w8Sm4QrP4 Hk/7+3MrTJZHN/ZyFaD1WRVSPFJOKlFxnw== X-Google-Smtp-Source: ABdhPJz/fyNwMOOCljTOwKeqawBHV+rfVTn4SD1hmL6kGH7RnhOArjakyc8KbIV0vPebbEgymrtjCQ== X-Received: by 2002:a05:6a00:8c5:b0:4fe:134d:30d3 with SMTP id s5-20020a056a0008c500b004fe134d30d3mr8405509pfu.3.1650217697790; Sun, 17 Apr 2022 10:48:17 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v3 55/60] target/arm: Enable FEAT_CSV2 for -cpu max Date: Sun, 17 Apr 2022 10:44:21 -0700 Message-Id: <20220417174426.711829-56-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220417174426.711829-1-richard.henderson@linaro.org> References: <20220417174426.711829-1-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::534; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x534.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=unavailable 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: , Cc: Peter Maydell , qemu-arm@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1650220979224100002 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 ebd9e418cc..91fb06c579 100644 --- a/docs/system/arm/emulation.rst +++ b/docs/system/arm/emulation.rst @@ -11,6 +11,7 @@ the following architecture extensions: - FEAT_AES (AESD and AESE instructions) - 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 03fbb34e4e..b62656f3c3 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 2.25.1