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[40.133.212.210]) by smtp.gmail.com with ESMTPSA id c1sm15132917pfa.51.2020.02.01.16.54.16 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 01 Feb 2020 16:54:17 -0800 (PST) Subject: Re: [PATCH 1/4] target/arm: Add ID_AA64MMFR2_EL1 To: Peter Maydell References: <20191203234244.9124-1-richard.henderson@linaro.org> <20191203234244.9124-2-richard.henderson@linaro.org> From: Richard Henderson Message-ID: Date: Sat, 1 Feb 2020 16:54:15 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::1044 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: QEMU Developers Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 12/6/19 10:19 AM, Peter Maydell wrote: >> @@ -549,6 +549,8 @@ bool kvm_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf) >> ARM64_SYS_REG(3, 0, 0, 7, 0)); >> err |= read_sys_reg64(fdarray[2], &ahcf->isar.id_aa64mmfr1, >> ARM64_SYS_REG(3, 0, 0, 7, 1)); >> + err |= read_sys_reg64(fdarray[2], &ahcf->isar.id_aa64mmfr2, >> + ARM64_SYS_REG(3, 0, 0, 7, 2)); > > Do current KVM kernels definitely handle the request for this > new register (ie don't return an error)? Yes, ID_AA64MMFR2 was added to the sys_regs table in the same commit (93390c0a1b20b) as all of the others here. r~