From patchwork Wed May 22 16:22:44 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shameerali Kolothum Thodi X-Patchwork-Id: 10956297 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E30956C5 for ; Wed, 22 May 2019 16:25:41 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D3D9027F81 for ; Wed, 22 May 2019 16:25:41 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C7F4B26246; Wed, 22 May 2019 16:25:41 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 269E027F81 for ; Wed, 22 May 2019 16:25:41 +0000 (UTC) Received: from localhost ([127.0.0.1]:47536 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hTU3g-00078W-Bk for patchwork-qemu-devel@patchwork.kernel.org; Wed, 22 May 2019 12:25:40 -0400 Received: from eggs.gnu.org ([209.51.188.92]:33905) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hTU2W-0006EK-Hb for qemu-devel@nongnu.org; Wed, 22 May 2019 12:24:29 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hTU2V-0000cy-6b for qemu-devel@nongnu.org; Wed, 22 May 2019 12:24:28 -0400 Received: from szxga06-in.huawei.com ([45.249.212.32]:41102 helo=huawei.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hTU2R-0007zo-Sw; Wed, 22 May 2019 12:24:24 -0400 Received: from DGGEMS404-HUB.china.huawei.com (unknown [172.30.72.59]) by Forcepoint Email with ESMTP id F2929D413ED8CDFFE42B; Thu, 23 May 2019 00:24:03 +0800 (CST) Received: from S00345302A-PC.china.huawei.com (10.202.227.237) by DGGEMS404-HUB.china.huawei.com (10.3.19.204) with Microsoft SMTP Server id 14.3.439.0; Thu, 23 May 2019 00:23:56 +0800 From: Shameer Kolothum To: , , , Date: Wed, 22 May 2019 17:22:44 +0100 Message-ID: <20190522162252.28568-1-shameerali.kolothum.thodi@huawei.com> X-Mailer: git-send-email 2.12.0.windows.1 MIME-Version: 1.0 X-Originating-IP: [10.202.227.237] X-CFilter-Loop: Reflected X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 45.249.212.32 Subject: [Qemu-devel] [PATCH v5 0/8] ARM virt: ACPI memory hotplug support X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, sameo@linux.intel.com, ard.biesheuvel@linaro.org, linuxarm@huawei.com, xuwei5@hisilicon.com, shannon.zhaosl@gmail.com, sebastien.boeuf@intel.com, lersek@redhat.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP This series is an attempt to provide device memory hotplug support on ARM virt platform. This is based on Eric's recent works here[1] and carries some of the pc-dimm related patches dropped from his series. The kernel support for arm64 memory hot add was added recently by Robin and hence the guest kernel should be => 5.0-rc1. NVDIM support is not included currently as we still have an unresolved issue while hot adding NVDIMM[2]. However NVDIMM cold plug patches can be included, but not done for now, for keeping it simple. This makes use of GED device to sent hotplug ACPI events to the Guest. GED code is based on Nemu. Thanks to the efforts of Samuel and Sebastien to add the hardware-reduced support to Nemu using GED device[3]. (Please shout if I got the author/signed-off wrong for those patches or missed any names). This is sanity tested on a HiSilicon ARM64 platform and appreciate any further testing. Thanks, Shameer [1] https://patchwork.kernel.org/cover/10837565/ [2] https://patchwork.kernel.org/cover/10783589/ [3] https://github.com/intel/nemu/blob/topic/virt-x86/hw/acpi/ged.c [4] http://lists.infradead.org/pipermail/linux-arm-kernel/2019-May/651763.html v4 --> v5 -Removed gsi/ged-irq routing in virt. -Added Migration support. -Dropped support for DT coldplug case based on the discussions here[4] -Added system_powerdown support through GED. v3 --> v4 Addressed comments from Igor and Eric, -Renamed "virt-acpi" to "acpi-ged". -Changed ged device parent to TYPE_DEVICE. -Introduced DT memory node property "hotpluggable" to resolve device memory being treated as early boot memory issue(patch #7). -Combined patches #3 and #9 from v3 into #3. v2 --> v3 Addressed comments from Igor and Eric, -Made virt acpi device platform independent and moved to hw/acpi/generic_event_device.c -Moved ged specific code into hw/acpi/generic_event_device.c -Introduced an opt-in feature "fdt" to resolve device-memory being treated as early boot memory. -Dropped patch #1 from v2. RFC --> v2 -Use GED device instead of GPIO for ACPI hotplug events. -Removed NVDIMM support for now. -Includes dropped patches from Eric's v9 series. Eric Auger (1): hw/arm/virt: Add memory hotplug framework Samuel Ortiz (2): hw/acpi: Do not create memory hotplug method when handler is not defined hw/acpi: Add ACPI Generic Event Device Support Shameer Kolothum (5): hw/acpi: Make ACPI IO address space configurable hw/arm/virt: Enable device memory cold/hot plug with ACPI boot hw/arm/virt-acpi-build: Add PC-DIMM in SRAT hw/acpi: Add system power down support to GED hw/arm: Use GED for system_powerdown event hw/acpi/Kconfig | 4 + hw/acpi/Makefile.objs | 1 + hw/acpi/generic_event_device.c | 348 +++++++++++++++++++++++++ hw/acpi/memory_hotplug.c | 35 +-- hw/arm/Kconfig | 4 + hw/arm/virt-acpi-build.c | 58 ++--- hw/arm/virt.c | 88 ++++++- hw/i386/acpi-build.c | 3 +- include/hw/acpi/generic_event_device.h | 106 ++++++++ include/hw/acpi/memory_hotplug.h | 9 +- include/hw/arm/virt.h | 3 + 11 files changed, 603 insertions(+), 56 deletions(-) create mode 100644 hw/acpi/generic_event_device.c create mode 100644 include/hw/acpi/generic_event_device.h Tested-by: Eric Auger