From patchwork Sat Jun 13 21:36:18 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Salil Mehta X-Patchwork-Id: 11602997 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B9239913 for ; Sat, 13 Jun 2020 21:48:44 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 99CF120789 for ; Sat, 13 Jun 2020 21:48:44 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 99CF120789 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:42466 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jkE15-0003cT-R7 for patchwork-qemu-devel@patchwork.kernel.org; Sat, 13 Jun 2020 17:48:43 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59844) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jkDxz-0006tJ-C3; Sat, 13 Jun 2020 17:45:31 -0400 Received: from szxga05-in.huawei.com ([45.249.212.191]:3776 helo=huawei.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jkDxx-0003GQ-Dn; Sat, 13 Jun 2020 17:45:31 -0400 Received: from DGGEMS406-HUB.china.huawei.com (unknown [172.30.72.59]) by Forcepoint Email with ESMTP id EF046561478D198E2282; Sun, 14 Jun 2020 05:45:25 +0800 (CST) Received: from A190218597.china.huawei.com (10.47.30.60) by DGGEMS406-HUB.china.huawei.com (10.3.19.206) with Microsoft SMTP Server id 14.3.487.0; Sun, 14 Jun 2020 05:45:17 +0800 From: Salil Mehta To: , Subject: [PATCH RFC 11/22] arm/cpuhp: Update GED _EVT method AML with cpu scan Date: Sat, 13 Jun 2020 22:36:18 +0100 Message-ID: <20200613213629.21984-12-salil.mehta@huawei.com> X-Mailer: git-send-email 2.8.3 In-Reply-To: <20200613213629.21984-1-salil.mehta@huawei.com> References: <20200613213629.21984-1-salil.mehta@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.47.30.60] X-CFilter-Loop: Reflected Received-SPF: pass client-ip=45.249.212.191; envelope-from=salil.mehta@huawei.com; helo=huawei.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/13 17:44:35 X-ACL-Warn: Detected OS = Linux 3.11 and newer [fuzzy] X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H4=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, drjones@redhat.com, sudeep.holla@arm.com, gshan@redhat.com, mst@redhat.com, jiakernel2@gmail.com, maz@kernel.org, zhukeqian1@huawei.com, david@redhat.com, richard.henderson@linaro.org, linuxarm@huawei.com, eric.auger@redhat.com, james.morse@arm.com, catalin.marinas@arm.com, imammedo@redhat.com, Salil Mehta , pbonzini@redhat.com, mehta.salil.lnk@gmail.com, maran.wilson@oracle.com, will@kernel.org, wangxiongfeng2@huawei.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" 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. The change in this patch updates the GED AML _EVT method with the call to \\_SB.CPUS.CSCN which will do above. Co-developed-by: Keqian Zhu Signed-off-by: Salil Mehta --- hw/acpi/generic_event_device.c | 4 ++++ include/hw/acpi/cpu_hotplug.h | 3 +++ 2 files changed, 7 insertions(+) diff --git a/hw/acpi/generic_event_device.c b/hw/acpi/generic_event_device.c index 0f2c8a959e..79177deda2 100644 --- a/hw/acpi/generic_event_device.c +++ b/hw/acpi/generic_event_device.c @@ -108,6 +108,10 @@ 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(ACPI_CPU_CONTAINER "." + ACPI_CPU_SCAN_METHOD)); + break; case ACPI_GED_PWR_DOWN_EVT: aml_append(if_ctx, aml_notify(aml_name(ACPI_POWER_BUTTON_DEVICE), diff --git a/include/hw/acpi/cpu_hotplug.h b/include/hw/acpi/cpu_hotplug.h index 48b291e45e..f47fc8e79b 100644 --- a/include/hw/acpi/cpu_hotplug.h +++ b/include/hw/acpi/cpu_hotplug.h @@ -20,6 +20,9 @@ #include "hw/acpi/cpu.h" #define ACPI_CPU_HOTPLUG_REG_LEN 12 +#define ACPI_CPU_SCAN_METHOD "CSCN" +#define ACPI_CPU_CONTAINER "\\_SB.CPUS" + typedef struct AcpiCpuHotplug { Object *device;