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[189.204.159.168]) by smtp.gmail.com with ESMTPSA id s15sm430914oou.44.2020.12.01.07.19.52 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 01 Dec 2020 07:19:53 -0800 (PST) Subject: Re: [PATCH v2 22/28] hw/intc/armv7m_nvic: Support v8.1M CCR.TRD bit To: Peter Maydell , qemu-arm@nongnu.org, qemu-devel@nongnu.org References: <20201119215617.29887-1-peter.maydell@linaro.org> <20201119215617.29887-23-peter.maydell@linaro.org> From: Richard Henderson Message-ID: Date: Tue, 1 Dec 2020 09:19:50 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20201119215617.29887-23-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::342; envelope-from=richard.henderson@linaro.org; helo=mail-ot1-x342.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=unavailable autolearn_force=no X-Spam_action: no action 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 11/19/20 3:56 PM, Peter Maydell wrote: > v8.1M introduces a new TRD flag in the CCR register, which enables > checking for stack frame integrity signatures on SG instructions. > This bit is not banked, and is always RAZ/WI to Non-secure code. > Adjust the code for handling CCR reads and writes to handle this. > > Signed-off-by: Peter Maydell > --- > target/arm/cpu.h | 2 ++ > hw/intc/armv7m_nvic.c | 26 ++++++++++++++++++-------- > 2 files changed, 20 insertions(+), 8 deletions(-) Reviewed-by: Richard Henderson r~