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[174.21.149.226]) by smtp.gmail.com with ESMTPSA id b1sm1588632pfi.140.2020.04.29.11.43.20 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 29 Apr 2020 11:43:20 -0700 (PDT) Subject: Re: [PATCH 4/4] target/arm: Implement ARMv8.2-TTS2UXN To: Peter Maydell , qemu-arm@nongnu.org, qemu-devel@nongnu.org References: <20200330210400.11724-1-peter.maydell@linaro.org> <20200330210400.11724-5-peter.maydell@linaro.org> From: Richard Henderson Message-ID: <98a9cb27-0a9c-b9c7-f683-968e01202343@linaro.org> Date: Wed, 29 Apr 2020 11:43:18 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 In-Reply-To: <20200330210400.11724-5-peter.maydell@linaro.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2607:f8b0:4864:20::642; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x642.google.com X-detected-operating-system: by eggs.gnu.org: Error: [-] PROGRAM ABORT : Malformed IPv6 address (bad octet value). Location : parse_addr6(), p0f-client.c:67 X-Received-From: 2607:f8b0:4864:20::642 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 3/30/20 2:04 PM, Peter Maydell wrote: > The ARMv8.2-TTS2UXN feature extends the XN field in stage 2 > translation table descriptors from just bit [54] to bits [54:53], > allowing stage 2 to control execution permissions separately for EL0 > and EL1. Implement the new semantics of the XN field and enable > the feature for our 'max' CPU. > > Signed-off-by: Peter Maydell > --- > target/arm/cpu.h | 15 +++++++++++++++ > target/arm/cpu.c | 1 + > target/arm/cpu64.c | 2 ++ > target/arm/helper.c | 37 +++++++++++++++++++++++++++++++------ > 4 files changed, 49 insertions(+), 6 deletions(-) Reviewed-by: Richard Henderson r~