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[185.176.79.56]) by mx.google.com with ESMTPS id x13-20020adfec0d000000b0032181a57630si5423188wrn.929.2023.10.02.09.14.26 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 02 Oct 2023 09:14:26 -0700 (PDT) Received-SPF: pass (google.com: domain of jonathan.cameron@huawei.com designates 185.176.79.56 as permitted sender) client-ip=185.176.79.56; Authentication-Results: mx.google.com; spf=pass (google.com: domain of jonathan.cameron@huawei.com designates 185.176.79.56 as permitted sender) smtp.mailfrom=jonathan.cameron@huawei.com; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=huawei.com Received: from lhrpeml500005.china.huawei.com (unknown [172.18.147.200]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4RzmDM5BdSz6HJZ3; Tue, 3 Oct 2023 00:11:47 +0800 (CST) Received: from localhost (10.202.227.76) by lhrpeml500005.china.huawei.com (7.191.163.240) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.31; Mon, 2 Oct 2023 17:14:24 +0100 Date: Mon, 2 Oct 2023 17:14:23 +0100 From: Jonathan Cameron To: Salil Mehta CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: Re: [PATCH V2 06/10] hw/acpi: Update GED _EVT method AML with cpu scan Message-ID: <20231002171423.00003c39@Huawei.com> In-Reply-To: <20230930001933.2660-7-salil.mehta@huawei.com> References: <20230930001933.2660-1-salil.mehta@huawei.com> <20230930001933.2660-7-salil.mehta@huawei.com> Organization: Huawei Technologies Research and Development (UK) Ltd. X-Mailer: Claws Mail 4.1.0 (GTK 3.24.33; x86_64-w64-mingw32) MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.202.227.76] X-ClientProxiedBy: lhrpeml100006.china.huawei.com (7.191.160.224) To lhrpeml500005.china.huawei.com (7.191.163.240) X-CFilter-Loop: Reflected X-TUID: 4bBhFqQTxZOh On Sat, 30 Sep 2023 01:19:29 +0100 Salil Mehta wrote: > 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: Keqian Zhu > Signed-off-by: Salil Mehta One trivial suggested addition inline (dropping existing definition that this replicates). With that tidied up Reviewed-by: Jonathan Cameron > --- > hw/acpi/generic_event_device.c | 4 ++++ > include/hw/acpi/cpu_hotplug.h | 2 ++ > 2 files changed, 6 insertions(+) > > diff --git a/hw/acpi/generic_event_device.c b/hw/acpi/generic_event_device.c > index d2fa1d0e4a..62d504d231 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..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" > > #define ACPI_CPU_HOTPLUG_REG_LEN 12 > +#define ACPI_CPU_SCAN_METHOD "CSCN" This seems to already be defined in hw/acpi/cpu.c Can we drop it from there given that file now includes this header anyway. > +#define ACPI_CPU_CONTAINER "\\_SB.CPUS" > > typedef struct AcpiCpuHotplug { > Object *device; From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 232C5E748F0 for ; Mon, 2 Oct 2023 16:14:57 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qnLZ6-0007YK-EI; Mon, 02 Oct 2023 12:14:36 -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 1qnLZ1-0007Xd-6I; Mon, 02 Oct 2023 12:14:31 -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 1qnLYy-0001RS-47; Mon, 02 Oct 2023 12:14:29 -0400 Received: from lhrpeml500005.china.huawei.com (unknown [172.18.147.200]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4RzmDM5BdSz6HJZ3; Tue, 3 Oct 2023 00:11:47 +0800 (CST) Received: from localhost (10.202.227.76) by lhrpeml500005.china.huawei.com (7.191.163.240) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.31; Mon, 2 Oct 2023 17:14:24 +0100 Date: Mon, 2 Oct 2023 17:14:23 +0100 To: Salil Mehta CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: Re: [PATCH V2 06/10] hw/acpi: Update GED _EVT method AML with cpu scan Message-ID: <20231002171423.00003c39@Huawei.com> In-Reply-To: <20230930001933.2660-7-salil.mehta@huawei.com> References: <20230930001933.2660-1-salil.mehta@huawei.com> <20230930001933.2660-7-salil.mehta@huawei.com> Organization: Huawei Technologies Research and Development (UK) Ltd. X-Mailer: Claws Mail 4.1.0 (GTK 3.24.33; x86_64-w64-mingw32) MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.202.227.76] X-ClientProxiedBy: lhrpeml100006.china.huawei.com (7.191.160.224) To lhrpeml500005.china.huawei.com (7.191.163.240) X-CFilter-Loop: Reflected Received-SPF: pass client-ip=185.176.79.56; envelope-from=jonathan.cameron@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_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, 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: , Reply-to: Jonathan Cameron From: Jonathan Cameron via Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On Sat, 30 Sep 2023 01:19:29 +0100 Salil Mehta wrote: > 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: Keqian Zhu > Signed-off-by: Salil Mehta One trivial suggested addition inline (dropping existing definition that this replicates). With that tidied up Reviewed-by: Jonathan Cameron > --- > hw/acpi/generic_event_device.c | 4 ++++ > include/hw/acpi/cpu_hotplug.h | 2 ++ > 2 files changed, 6 insertions(+) > > diff --git a/hw/acpi/generic_event_device.c b/hw/acpi/generic_event_device.c > index d2fa1d0e4a..62d504d231 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..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" > > #define ACPI_CPU_HOTPLUG_REG_LEN 12 > +#define ACPI_CPU_SCAN_METHOD "CSCN" This seems to already be defined in hw/acpi/cpu.c Can we drop it from there given that file now includes this header anyway. > +#define ACPI_CPU_CONTAINER "\\_SB.CPUS" > > typedef struct AcpiCpuHotplug { > Object *device;