From nobody Mon Nov 25 04:42:42 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1717761614; cv=none; d=zohomail.com; s=zohoarc; b=VUv0cM8Y5dZ/IHv0sSyqbK2K/4G9xYOOe1BYfvbIANNNwsrit6hYpLKxN1O0kfYpJe3X7LabhmXeaB8AVDoAqwvnp69ElyRlO6awYqEyeFbF27Lc0GvtLf/DYnbt4YWPfGsxUjagS7/BauN25+pM88mkMO1oVineTGb5dT8nUWE= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1717761614; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Reply-To:Reply-To:References:Sender:Subject:Subject:To:To:Message-Id; bh=2hHLP2Dmyty6tEqXCoVPY6EiLkhy/uLPW24g5KzSzO8=; b=DRtdY4qOdYfeg3S8BYmONgL5Bq3/U4NXbhLoIKb8pmVNB5XC5NEmpchaQbqmYPcgdDY/zTUAcsTf8XhPfdlUKGeK2TqYphUhiekUybPFCCbIRQczeJ23Afg4Lx5oOWZsZWCVvK3r6bxkGuG7PYJ+SzPyww+xdUIQ0LOFE+3f9QU= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1717761614234872.9713548997528; Fri, 7 Jun 2024 05:00:14 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sFYGF-0005Zn-44; Fri, 07 Jun 2024 08:00:03 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sFYFe-000566-BZ; Fri, 07 Jun 2024 07:59:22 -0400 Received: from frasgout.his.huawei.com ([185.176.79.56]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sFYFb-0000gL-OZ; Fri, 07 Jun 2024 07:59:22 -0400 Received: from mail.maildlp.com (unknown [172.18.186.31]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4Vwfl12SnBz6HJqD; Fri, 7 Jun 2024 19:54:53 +0800 (CST) Received: from lhrpeml500001.china.huawei.com (unknown [7.191.163.213]) by mail.maildlp.com (Postfix) with ESMTPS id 4F669140A87; Fri, 7 Jun 2024 19:59:17 +0800 (CST) Received: from 00293818-MRGF.china.huawei.com (10.48.147.102) by lhrpeml500001.china.huawei.com (7.191.163.213) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Fri, 7 Jun 2024 12:58:54 +0100 To: , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Jonathan Cameron , Shaoqin Huang , Zhao Liu Subject: [PATCH V13 4/8] hw/acpi: Update GED _EVT method AML with CPU scan Date: Fri, 7 Jun 2024 12:56:45 +0100 Message-ID: <20240607115649.214622-5-salil.mehta@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240607115649.214622-1-salil.mehta@huawei.com> References: <20240607115649.214622-1-salil.mehta@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.48.147.102] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To lhrpeml500001.china.huawei.com (7.191.163.213) 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=185.176.79.56; envelope-from=salil.mehta@huawei.com; helo=frasgout.his.huawei.com 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_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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: , Reply-to: Salil Mehta From: Salil Mehta via Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1717761615569100003 Content-Type: text/plain; charset="utf-8" OSPM evaluates _EVT method to map the event. The CPU hotplug event eventual= ly 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 _E= VT method with the call to \\_SB.CPUS.CSCN Also, macro CPU_SCAN_METHOD might be referred in other places like during G= ED intialization so it makes sense to have its definition placed in some common header file like cpu_hotplug.h. But doing this can cause compilation break because of the conflicting macro definitions present in cpu.c and cpu_hotpl= ug.c and because both these files get compiled due to historic reasons of x86 wo= rld i.e. decision to use legacy(GPE.2)/modern(GED) CPU hotplug interface happens during runtime [1]. To mitigate above, for now, declare a new common macro ACPI_CPU_SCAN_METHOD for CPU scan method instead. (This needs a separate discussion later on for clean-up) Reference: [1] https://lore.kernel.org/qemu-devel/1463496205-251412-24-git-send-email-= imammedo@redhat.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 --- hw/acpi/cpu.c | 2 +- hw/acpi/generic_event_device.c | 4 ++++ include/hw/acpi/cpu_hotplug.h | 2 ++ 3 files changed, 7 insertions(+), 1 deletion(-) diff --git a/hw/acpi/cpu.c b/hw/acpi/cpu.c index 473b37ba88..af2b6655d2 100644 --- a/hw/acpi/cpu.c +++ b/hw/acpi/cpu.c @@ -327,7 +327,7 @@ const VMStateDescription vmstate_cpu_hotplug =3D { #define CPUHP_RES_DEVICE "PRES" #define CPU_LOCK "CPLK" #define CPU_STS_METHOD "CSTA" -#define CPU_SCAN_METHOD "CSCN" +#define CPU_SCAN_METHOD ACPI_CPU_SCAN_METHOD #define CPU_NOTIFY_METHOD "CTFY" #define CPU_EJECT_METHOD "CEJ0" #define CPU_OST_METHOD "COST" diff --git a/hw/acpi/generic_event_device.c b/hw/acpi/generic_event_device.c index 54d3b4bf9d..63226b0040 100644 --- a/hw/acpi/generic_event_device.c +++ b/hw/acpi/generic_event_device.c @@ -109,6 +109,10 @@ void build_ged_aml(Aml *table, const char *name, Hotpl= ugHandler *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..ef631750b4 100644 --- a/include/hw/acpi/cpu_hotplug.h +++ b/include/hw/acpi/cpu_hotplug.h @@ -20,6 +20,8 @@ #include "hw/acpi/cpu.h" =20 #define ACPI_CPU_HOTPLUG_REG_LEN 12 +#define ACPI_CPU_SCAN_METHOD "CSCN" +#define ACPI_CPU_CONTAINER "\\_SB.CPUS" =20 typedef struct AcpiCpuHotplug { Object *device; --=20 2.34.1