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Tue, 30 Sep 2025 18:02:57 -0700 (PDT) From: salil.mehta@opnsrc.net To: qemu-devel@nongnu.org, qemu-arm@nongnu.org, mst@redhat.com Cc: salil.mehta@huawei.com, maz@kernel.org, jean-philippe@linaro.org, jonathan.cameron@huawei.com, lpieralisi@kernel.org, peter.maydell@linaro.org, richard.henderson@linaro.org, imammedo@redhat.com, armbru@redhat.com, andrew.jones@linux.dev, david@redhat.com, philmd@linaro.org, eric.auger@redhat.com, will@kernel.org, ardb@kernel.org, oliver.upton@linux.dev, pbonzini@redhat.com, gshan@redhat.com, rafael@kernel.org, borntraeger@linux.ibm.com, alex.bennee@linaro.org, gustavo.romero@linaro.org, npiggin@gmail.com, harshpb@linux.ibm.com, linux@armlinux.org.uk, darren@os.amperecomputing.com, ilkka@os.amperecomputing.com, vishnu@os.amperecomputing.com, gankulkarni@os.amperecomputing.com, karl.heubaum@oracle.com, miguel.luis@oracle.com, salil.mehta@opnsrc.net, zhukeqian1@huawei.com, wangxiongfeng2@huawei.com, wangyanan55@huawei.com, wangzhou1@hisilicon.com, linuxarm@huawei.com, jiakernel2@gmail.com, maobibo@loongson.cn, lixianglai@loongson.cn, shahuang@redhat.com, zhao1.liu@intel.com Subject: [PATCH RFC V6 19/24] target/arm/cpu: Add the Accessor hook to fetch ARM CPU arch-id Date: Wed, 1 Oct 2025 01:01:22 +0000 Message-Id: <20251001010127.3092631-20-salil.mehta@opnsrc.net> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20251001010127.3092631-1-salil.mehta@opnsrc.net> References: <20251001010127.3092631-1-salil.mehta@opnsrc.net> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::42b; envelope-from=salil.mehta@opnsrc.net; helo=mail-wr1-x42b.google.com X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, DKIM_INVALID=0.1, DKIM_SIGNED=0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @opnsrc.net) X-ZM-MESSAGEID: 1759281219657116600 Content-Type: text/plain; charset="utf-8" From: Salil Mehta ACPI 'acpi_cpu_{device_check,eject_request}_cb()' uses 'get_cpu_status()' API to get the existing 'AcpiCpuOspmStateStatus' of the CPU being 'online'd= or offline'd' after VM has initialized. Later usesCPUClass::get_arch_id` to ma= tch the CPU. Hence, we must add ARM CPU architecture specific accessor hook to = fetch `mp-affinity` programmed in the KVM host. Signed-off-by: Salil Mehta --- target/arm/cpu.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/target/arm/cpu.c b/target/arm/cpu.c index 0ceaf69092..d147e786c1 100644 --- a/target/arm/cpu.c +++ b/target/arm/cpu.c @@ -2744,6 +2744,11 @@ static const TCGCPUOps arm_tcg_ops =3D { }; #endif /* CONFIG_TCG */ =20 +static int64_t arm_cpu_get_arch_id(CPUState *cs) +{ + return arm_cpu_mp_affinity(ARM_CPU(cs)); +} + static void arm_cpu_class_init(ObjectClass *oc, const void *data) { ARMCPUClass *acc =3D ARM_CPU_CLASS(oc); @@ -2763,6 +2768,7 @@ static void arm_cpu_class_init(ObjectClass *oc, const= void *data) cc->dump_state =3D arm_cpu_dump_state; cc->set_pc =3D arm_cpu_set_pc; cc->get_pc =3D arm_cpu_get_pc; + cc->get_arch_id =3D arm_cpu_get_arch_id; cc->gdb_read_register =3D arm_cpu_gdb_read_register; cc->gdb_write_register =3D arm_cpu_gdb_write_register; #ifndef CONFIG_USER_ONLY --=20 2.34.1