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[97.126.123.70]) by smtp.gmail.com with ESMTPSA id r3sm3953626pfg.145.2020.01.29.15.56.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Jan 2020 15:56:44 -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 :mime-version:content-transfer-encoding; bh=qRKwqyVud14kmLqcBJZ9BOc7sQ/amtWCt21hXg2UNtM=; b=on4o/zGUYgNqRKSks1mmwPFQd2ioIxvx3Q0OMSb/fvonp+3RiI2G9ut3MbXHj0Rcg4 qsWkXai61NxzA4RDD3IBtTR+GNDqkL1OgqR35ngqCzssokXyEeL2WuYF90kFv+nLMjDs f24xtJ5iYKW/5yjRbWTtbesmldLhH4GAG5umTaayvEVoFBzERBdB1VhFShk/aIi54IAf mFYDKLa6VFK4xwawtG8lBbiZwyUZ57h8UgP/SKafgfnlvcxDz1yRhknp4jNZtWMoKhW0 7LlNlg9Y25MaN+eA/6FS8asj9cEd+D6du9vlSRnejnbr8YLCTMxhIrj4W69FCxo0VlVi G34Q== 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:mime-version:content-transfer-encoding; bh=qRKwqyVud14kmLqcBJZ9BOc7sQ/amtWCt21hXg2UNtM=; b=jB4QnXWKQfsYi8wombvSKmHm9/LYl+8MPuG7Rx//EHofJHoSXvFl8wH5BWWmAJJOMD SaLLIwUPFd54PRJZXFpNapTtdYgiJc+4iXoypwj5Zw4H+gH7gEVnW97w3LALQgIUjBWG sqWv63djhM0ILYK6/15dzGScTbugrpj9LMubJN2aFH+2HyRZxtMT6Efl+4SwXxdH1kxd JuFAQlyVnWZV1kNnzilR9/vWoGJTYlYbg5yG2/JxiltoXd+NlWSVDAqgWtxGr1FYu0Kr S7KhzLUQ5fl1EeIHp1hmwQy7qQwur/Zk3KxCC8p301q0afBBdouzJ6gWx5VVAgESejIy 4Gzw== X-Gm-Message-State: APjAAAXg4rWv/SIAMUZmnJOc9h7feNP6qdMyNm72YkWPNyvUrNDKJJK2 9Cjzw5x1ys+QS1hUREUCksnjUriWsVA= X-Google-Smtp-Source: APXvYqwFx8FMeDStpEeg/Q6ALLJfz7hOCe7LIQxt/sNaXjfxxokyXoWaoW7afAp0zkjvh6GsehrdtA== X-Received: by 2002:a63:7119:: with SMTP id m25mr1716444pgc.131.1580342204867; Wed, 29 Jan 2020 15:56:44 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v5 23/41] target/arm: Update aa64_zva_access for EL2 Date: Wed, 29 Jan 2020 15:55:56 -0800 Message-Id: <20200129235614.29829-24-richard.henderson@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200129235614.29829-1-richard.henderson@linaro.org> References: <20200129235614.29829-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::544 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, alex.bennee@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) The comment that we don't support EL2 is somewhat out of date. Update to include checks against HCR_EL2.TDZ. Reviewed-by: Alex Benn=C3=A9e Signed-off-by: Richard Henderson --- target/arm/helper.c | 26 +++++++++++++++++++++----- 1 file changed, 21 insertions(+), 5 deletions(-) diff --git a/target/arm/helper.c b/target/arm/helper.c index 37ea382050..33f4cbbc64 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -4159,11 +4159,27 @@ static void tlbi_aa64_ipas2e1is_write(CPUARMState *= env, const ARMCPRegInfo *ri, static CPAccessResult aa64_zva_access(CPUARMState *env, const ARMCPRegInfo= *ri, bool isread) { - /* We don't implement EL2, so the only control on DC ZVA is the - * bit in the SCTLR which can prohibit access for EL0. - */ - if (arm_current_el(env) =3D=3D 0 && !(env->cp15.sctlr_el[1] & SCTLR_DZ= E)) { - return CP_ACCESS_TRAP; + int cur_el =3D arm_current_el(env); + + if (cur_el < 2) { + uint64_t hcr =3D arm_hcr_el2_eff(env); + + if (cur_el =3D=3D 0) { + if ((hcr & (HCR_E2H | HCR_TGE)) =3D=3D (HCR_E2H | HCR_TGE)) { + if (!(env->cp15.sctlr_el[2] & SCTLR_DZE)) { + return CP_ACCESS_TRAP_EL2; + } + } else { + if (!(env->cp15.sctlr_el[1] & SCTLR_DZE)) { + return CP_ACCESS_TRAP; + } + if (hcr & HCR_TDZ) { + return CP_ACCESS_TRAP_EL2; + } + } + } else if (hcr & HCR_TDZ) { + return CP_ACCESS_TRAP_EL2; + } } return CP_ACCESS_OK; } --=20 2.20.1