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[5.90.113.158]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-368787eb6b0sm7011291f8f.90.2024.07.21.17.18.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 21 Jul 2024 17:18:17 -0700 (PDT) Date: Sun, 21 Jul 2024 20:18:16 -0400 From: "Michael S. Tsirkin" To: qemu-devel@nongnu.org Cc: Peter Maydell , Salil Mehta , Keqian Zhu , Jonathan Cameron , Gavin Shan , Vishnu Pajjuri , Xianglai Li , Miguel Luis , Shaoqin Huang , Zhao Liu , Igor Mammedov , Ani Sinha Subject: [PULL 41/63] hw/acpi: Update GED _EVT method AML with CPU scan Message-ID: References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-Mailer: git-send-email 2.27.0.106.g8ac3dc51b1 X-Mutt-Fcc: =sent Received-SPF: pass client-ip=170.10.133.124; envelope-from=mst@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -22 X-Spam_score: -2.3 X-Spam_bar: -- X-Spam_report: (-2.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.141, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=-0.01, RCVD_IN_MSPIKE_WL=-0.01, 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 From: Salil Mehta OSPM evaluates _EVT method to map the event. The CPU hotplug event eventually results in start of the CPU scan. Scan figures out the CPU and the kind of event(plug/unplug) and notifies it back to the guest. Update the GED AML _EVT method with the call to method \\_SB.CPUS.CSCN (via \\_SB.GED.CSCN) Architecture specific code [1] might initialize its CPUs AML code by calling common function build_cpus_aml() like below for ARM: build_cpus_aml(scope, ms, opts, xx_madt_cpu_entry, memmap[VIRT_CPUHP_ACPI].base, "\\_SB", "\\_SB.GED.CSCN", AML_SYSTEM_MEMORY); [1] https://lore.kernel.org/qemu-devel/20240613233639.202896-13-salil.mehta@huawei.com/ Co-developed-by: Keqian Zhu Signed-off-by: Keqian Zhu Signed-off-by: Salil Mehta Reviewed-by: Jonathan Cameron Reviewed-by: Gavin Shan Tested-by: Vishnu Pajjuri Tested-by: Xianglai Li Tested-by: Miguel Luis Reviewed-by: Shaoqin Huang Tested-by: Zhao Liu Reviewed-by: Igor Mammedov Message-Id: <20240716111502.202344-5-salil.mehta@huawei.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- include/hw/acpi/generic_event_device.h | 1 + hw/acpi/generic_event_device.c | 3 +++ 2 files changed, 4 insertions(+) diff --git a/include/hw/acpi/generic_event_device.h b/include/hw/acpi/generic_event_device.h index e091ac2108..40af3550b5 100644 --- a/include/hw/acpi/generic_event_device.h +++ b/include/hw/acpi/generic_event_device.h @@ -87,6 +87,7 @@ OBJECT_DECLARE_SIMPLE_TYPE(AcpiGedState, ACPI_GED) #define GED_DEVICE "GED" #define AML_GED_EVT_REG "EREG" #define AML_GED_EVT_SEL "ESEL" +#define AML_GED_EVT_CPU_SCAN_METHOD "\\_SB.GED.CSCN" /* * Platforms need to specify the GED event bitmap diff --git a/hw/acpi/generic_event_device.c b/hw/acpi/generic_event_device.c index 4641933a0f..15b4c3ebbf 100644 --- a/hw/acpi/generic_event_device.c +++ b/hw/acpi/generic_event_device.c @@ -108,6 +108,9 @@ void build_ged_aml(Aml *table, const char *name, HotplugHandler *hotplug_dev, aml_append(if_ctx, aml_call0(MEMORY_DEVICES_CONTAINER "." MEMORY_SLOT_SCAN_METHOD)); break; + case ACPI_GED_CPU_HOTPLUG_EVT: + aml_append(if_ctx, aml_call0(AML_GED_EVT_CPU_SCAN_METHOD)); + break; case ACPI_GED_PWR_DOWN_EVT: aml_append(if_ctx, aml_notify(aml_name(ACPI_POWER_BUTTON_DEVICE),