Message ID | 20220812114527.1336370-2-peter.maydell@linaro.org |
---|---|
State | Not Applicable |
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[2001:8b0:1d0::2]) by smtp.gmail.com with ESMTPSA id n8-20020a05600c3b8800b003a5418245b9sm11257797wms.19.2022.08.12.04.45.30 for <qemu-devel@nongnu.org> (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Aug 2022 04:45:30 -0700 (PDT) From: Peter Maydell <peter.maydell@linaro.org> To: qemu-devel@nongnu.org Subject: [PULL 1/5] target/arm: Don't report Statistical Profiling Extension in ID registers Date: Fri, 12 Aug 2022 12:45:23 +0100 Message-Id: <20220812114527.1336370-2-peter.maydell@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220812114527.1336370-1-peter.maydell@linaro.org> References: <20220812114527.1336370-1-peter.maydell@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::332; envelope-from=peter.maydell@linaro.org; helo=mail-wm1-x332.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, T_SCC_BODY_TEXT_LINE=-0.01 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: <qemu-devel.nongnu.org> List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>, <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe> List-Archive: <https://lists.nongnu.org/archive/html/qemu-devel> List-Post: <mailto:qemu-devel@nongnu.org> List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help> List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>, <mailto:qemu-devel-request@nongnu.org?subject=subscribe> Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: "Qemu-devel" <qemu-devel-bounces+patch=linaro.org@nongnu.org> |
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[PULL,1/5] target/arm: Don't report Statistical Profiling Extension in ID registers
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diff --git a/target/arm/cpu.c b/target/arm/cpu.c index 1b7b3d76bb3..7ec3281da9a 100644 --- a/target/arm/cpu.c +++ b/target/arm/cpu.c @@ -1933,6 +1933,17 @@ static void arm_cpu_realizefn(DeviceState *dev, Error **errp) } #endif + if (tcg_enabled()) { + /* + * Don't report the Statistical Profiling Extension in the ID + * registers, because TCG doesn't implement it yet (not even a + * minimal stub version) and guests will fall over when they + * try to access the non-existent system registers for it. + */ + cpu->isar.id_aa64dfr0 = + FIELD_DP64(cpu->isar.id_aa64dfr0, ID_AA64DFR0, PMSVER, 0); + } + /* MPU can be configured out of a PMSA CPU either by setting has-mpu * to false or by setting pmsav7-dregion to 0. */