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([2602:ae:1541:f901:b714:1fce:85fa:2fc7]) by smtp.gmail.com with ESMTPSA id i17-20020aa787d1000000b005d6999eec90sm2042476pfo.120.2023.03.31.10.04.22 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 31 Mar 2023 10:04:23 -0700 (PDT) Message-ID: Date: Fri, 31 Mar 2023 10:04:21 -0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.9.0 Subject: Re: [PATCH 3/3] target/arm: Implement FEAT_PAN3 Content-Language: en-US To: Peter Maydell , qemu-arm@nongnu.org, qemu-devel@nongnu.org References: <20230331145045.2584941-1-peter.maydell@linaro.org> <20230331145045.2584941-4-peter.maydell@linaro.org> From: Richard Henderson In-Reply-To: <20230331145045.2584941-4-peter.maydell@linaro.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2607:f8b0:4864:20::52d; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x52d.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, NICE_REPLY_A=-0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 3/31/23 07:50, Peter Maydell wrote: > FEAT_PAN3 adds an EPAN bit to SCTLR_EL1 and SCTLR_EL2, which allows > the PAN bit to make memory non-privileged-read/write if it is > user-executable as well as if it is user-read/write. > > Implement this feature and enable it in the AArch64 'max' CPU. > > Signed-off-by: Peter Maydell > --- > docs/system/arm/emulation.rst | 1 + > target/arm/cpu.h | 5 +++++ > target/arm/cpu64.c | 2 +- > target/arm/ptw.c | 14 +++++++++++++- > 4 files changed, 20 insertions(+), 2 deletions(-) Reviewed-by: Richard Henderson r~