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Fri, 17 Oct 2025 08:39:33 -0700 (PDT) Received: from [192.168.0.4] ([71.212.157.132]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-29099348afcsm67887525ad.37.2025.10.17.08.39.33 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 17 Oct 2025 08:39:33 -0700 (PDT) Message-ID: <518e1d4e-abdc-4f03-a60e-9a7c413cb858@linaro.org> Date: Fri, 17 Oct 2025 08:39:32 -0700 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 2/3] target/arm: Implement org.gnu.gdb.aarch64.tls XML feature in gdbstub To: Peter Maydell , qemu-arm@nongnu.org, qemu-devel@nongnu.org Cc: Vacha Bhavsar References: <20251017153027.969016-1-peter.maydell@linaro.org> <20251017153027.969016-3-peter.maydell@linaro.org> From: Richard Henderson Content-Language: en-US In-Reply-To: <20251017153027.969016-3-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::631; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x631.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: 2.1.29 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 10/17/25 08:30, Peter Maydell wrote: > GDB expects the TLS registers to be exposed via org.gnu.gdb.aarch64.tls, > which will contain either just "tpidr", or else "tpidr" and "tpidr2". > > This will be important for SME in future, because the lazy state > restoration scheme requires GDB to use the TPIDR2 information. > GDB doesn't currently implement that, but we should provide the > register via the XML so that we are ready when future GDB versions > support it. > > Signed-off-by: Peter Maydell > --- > target/arm/cpu.h | 1 + > target/arm/internals.h | 3 ++ > target/arm/gdbstub.c | 6 ++++ > target/arm/gdbstub64.c | 63 ++++++++++++++++++++++++++++++++++++++++++ > 4 files changed, 73 insertions(+) Reviewed-by: Richard Henderson r~