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Wed, 11 Sep 2024 06:50:46 +0000 Message-ID: Date: Wed, 11 Sep 2024 12:20:38 +0530 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] arm/kvm: add support for MTE To: Peter Maydell , richard.henderson@linaro.org Cc: qemu-arm@nongnu.org, qemu-devel@nongnu.org, darren@os.amperecomputing.com References: <20240709060448.251881-1-gankulkarni@os.amperecomputing.com> <0b5764d4-fd63-4779-a22a-8e10ebafbcc7@os.amperecomputing.com> Content-Language: en-US From: Ganapatrao Kulkarni In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: MA0P287CA0011.INDP287.PROD.OUTLOOK.COM (2603:1096:a01:d9::7) To SJ2PR01MB8101.prod.exchangelabs.com (2603:10b6:a03:4f6::10) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ2PR01MB8101:EE_|SN7PR01MB8116:EE_ X-MS-Office365-Filtering-Correlation-Id: 2bb4a30d-3db1-45e2-cce2-08dcd22e0ff1 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|376014|366016; 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envelope-from=gankulkarni@os.amperecomputing.com; helo=NAM11-CO1-obe.outbound.protection.outlook.com X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, SPF_HELO_PASS=-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 10-09-2024 05:53 pm, Peter Maydell wrote: > On Tue, 10 Sept 2024 at 12:57, Ganapatrao Kulkarni > wrote: >> On 16-07-2024 09:15 pm, Peter Maydell wrote: >>> Since Cornelia first wrote the patch this is based on, we've >>> landed gdbstub support for MTE (so gdb can find out which >>> addresses in the memory map have tags and read and write >>> those tags). So I think the KVM MTE support now also needs to >>> handle that. (See aarch64_cpu_register_gdb_commands() in >>> target/arm/gdbstub64.c.) >> >> I looked at this code and it looks like, complete code is under >> ifdef CONFIG_USER_ONLY and for kvm(target aarch64-softmmu) this is not >> getting enabled. Are you asking to remove these ifdef and make >> mte-gdbstub commands available for the KVM mode as well? > > The system mode support for mte gdbstub is just about > to land. The current patchset is this one: > https://patchew.org/QEMU/20240906143316.657436-1-gustavo.romero@linaro.org/ > Thanks. I applied these patches to qemu and compiled gdb as said in the cover-letter. Below is the log of the run, help me to interpret the logs. [root@sut01sys-r214 mte-qemu]# make -C build -j 32 run-tcg-tests-aarch64-softmmu make: Entering directory '/home/ganapat/upstream/mte-qemu/build' BUILD aarch64-softmmu guest-tests RUN aarch64-softmmu guest-tests TEST mte on aarch64 TEST hello on aarch64 TEST interrupt on aarch64 TEST memory on aarch64 TEST memory-sve on aarch64 TEST hello-with-libbb.so on aarch64 TEST interrupt-with-libbb.so on aarch64 TEST memory-with-libbb.so on aarch64 TEST hello-with-libempty.so on aarch64 TEST interrupt-with-libempty.so on aarch64 TEST memory-with-libempty.so on aarch64 TEST interrupt-with-libinline.so on aarch64 TEST hello-with-libinline.so on aarch64 TEST memory-with-libinline.so on aarch64 TEST hello-with-libinsn.so on aarch64 TEST memory-with-libinsn.so on aarch64 TEST interrupt-with-libinsn.so on aarch64 TEST hello-with-libmem.so on aarch64 TEST interrupt-with-libmem.so on aarch64 TEST hello-with-libsyscall.so on aarch64 TEST memory-with-libmem.so on aarch64 TEST interrupt-with-libsyscall.so on aarch64 TEST softmmu gdbstub support on aarch64 TEST memory-with-libsyscall.so on aarch64 TEST softmmu gdbstub support on aarch64 TEST softmmu gdbstub untimely packets on aarch64 TEST softmmu gdbstub support on aarch64 TEST gdbstub MTE support on aarch64 TEST memory-record on aarch64 qemu-system-aarch64: -gdb unix:path=/tmp/tmp80lbp057qemu-gdbstub/gdbstub.socket,server=on: info: QEMU waiting for connection on: disconnected:unix:/tmp/tmp80lbp057qemu-gdbstub/gdbstub.socket,server=on qemu-system-aarch64: -gdb unix:path=/tmp/tmp8h7kx8kyqemu-gdbstub/gdbstub.socket,server=on: info: QEMU waiting for connection on: disconnected:unix:/tmp/tmp8h7kx8kyqemu-gdbstub/gdbstub.socket,server=on qemu-system-aarch64: -gdb unix:path=/tmp/tmpo0448vk6qemu-gdbstub/gdbstub.socket,server=on: info: QEMU waiting for connection on: disconnected:unix:/tmp/tmpo0448vk6qemu-gdbstub/gdbstub.socket,server=on qemu-system-aarch64: -gdb unix:path=/tmp/tmplvwd79e3qemu-gdbstub/gdbstub.socket,server=on: info: QEMU waiting for connection on: disconnected:unix:/tmp/tmplvwd79e3qemu-gdbstub/gdbstub.socket,server=on qemu-system-aarch64: -gdb unix:path=/tmp/tmpv1t2ffjfqemu-gdbstub/gdbstub.socket,server=on: info: QEMU waiting for connection on: disconnected:unix:/tmp/tmpv1t2ffjfqemu-gdbstub/gdbstub.socket,server=on TEST memory-replay on aarch64 qemu-system-aarch64: QEMU: Terminated via GDBstub qemu-system-aarch64: QEMU: Terminated via GDBstub GREP file untimely-packet.gdb.err qemu-system-aarch64: QEMU: Terminated via GDBstub qemu-system-aarch64: QEMU: Terminated via GDBstub make: Leaving directory '/home/ganapat/upstream/mte-qemu/build' [root@sut01sys-r214 mte-qemu]# Last few lines of untimely-packet.gdb.err below: [remote] Packet received: 00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 [24 bytes omitted] [remote] Sending packet: $qfThreadInfo#bb [remote] Received Ack [remote] Packet received: mp01.01 [remote] Sending packet: $qsThreadInfo#c8 [remote] Received Ack [remote] Packet received: l [remote] Sending packet: $p56#db [remote] Received Ack [remote] Packet received: 000000000000ffff [remote] packet_ok: Packet p (fetch-register) is supported [remote] Sending packet: $p57#dc [remote] Received Ack [remote] Packet received: 000000000000ffff [remote] Sending packet: $m400027b0,4#8c [remote] Received Ack [remote] Packet received: 80c2ff10 [remote] Sending packet: $m400027ac,4#be [remote] Received Ack [remote] Packet received: 1f2003d5 [remote] Sending packet: $m400027b0,4#8c [remote] Received Ack [remote] Packet received: 80c2ff10 [remote] Sending packet: $qSymbol::#5b [remote] Received Ack [remote] Packet received: [remote] packet_ok: Packet qSymbol (symbol-lookup) is NOT supported [remote] start_remote_1: exit [remote] Sending packet: $D;1#b0 [remote] Received Ack [remote] Packet received: OK -- Thanks, Ganapat/GK