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[81.2.115.148]) by smtp.gmail.com with ESMTPSA id y11sm5721416wmi.33.2021.07.23.09.21.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 23 Jul 2021 09:21:48 -0700 (PDT) From: Peter Maydell To: qemu-arm@nongnu.org, qemu-devel@nongnu.org Subject: [PATCH for-6.1 0/6] arm: Fix a handful of M-profile bugs Date: Fri, 23 Jul 2021 17:21:40 +0100 Message-Id: <20210723162146.5167-1-peter.maydell@linaro.org> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::42a; envelope-from=peter.maydell@linaro.org; helo=mail-wr1-x42a.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, 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: 2.1.23 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" This patchset fixes a handful of minor M-profile bugs: * The low 2 bits of SP should not be writeable (they are always 0) * Missing 'return' statements for some "tail chain to another exception after detecting an error during exception return" cases * Alignment faults were being incorrectly reported to the guest as MMU faults * ISCR.ISRPENDING wasn't being set if there was a pending but non-enabled interrupt * ISCR.VECTPENDING is 9 bits, not 8 * ISCR.VECTPENDING was missing the new-for-v8.1M behaviour where it hides the identity of a pending Secure exception from a NonSecure read of the register Nothing here is very critical, but they might as well go into 6.1 because they are bugfixes. thanks -- PMM Peter Maydell (6): target/arm: Enforce that M-profile SP low 2 bits are always zero target/arm: Add missing 'return's after calling v7m_exception_taken() target/arm: Report M-profile alignment faults correctly to the guest hw/intc/armv7m_nvic: ISCR.ISRPENDING is set for non-enabled pending interrupts hw/intc/armv7m_nvic: Correct size of ICSR.VECTPENDING hw/intc/armv7m_nvic: for v8.1M VECTPENDING hides S exceptions from NS hw/intc/armv7m_nvic.c | 40 ++++++++++++++++++++++++++++------------ target/arm/gdbstub.c | 4 ++++ target/arm/m_helper.c | 24 ++++++++++++++++++------ target/arm/translate.c | 3 +++ 4 files changed, 53 insertions(+), 18 deletions(-) -- 2.20.1