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 208D7C71136 for ; Mon, 16 Jun 2025 09:50:25 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uR6T5-0007z6-MM; Mon, 16 Jun 2025 05:49:31 -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 1uR6T4-0007yi-ER for qemu-devel@nongnu.org; Mon, 16 Jun 2025 05:49:30 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uR6T1-0001tz-Fc for qemu-devel@nongnu.org; Mon, 16 Jun 2025 05:49:29 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1750067362; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=4soGpEju/KcWgIUqwYQeUC1luRWZueLbuk+rtmDw/t4=; b=H1Zete8Mvhz0v5PqAXmBc88Rx7xmlwFBE55Hhw2W8k+zJeNGZ3Tv9EqLczy9X2AUe1IVnD 52/JX5ExnkGMToma6ojmQ37jjbXWbjNBv5p/BnBE4wuj861XZkjrkysyY6hWOYMnT4nTP1 YpXGUqKa+CKquDLnWLXK17VDs/woKmw= Received: from mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-28-ZRFW44EDN0a48LD3JfmVMA-1; Mon, 16 Jun 2025 05:49:17 -0400 X-MC-Unique: ZRFW44EDN0a48LD3JfmVMA-1 X-Mimecast-MFC-AGG-ID: ZRFW44EDN0a48LD3JfmVMA_1750067355 Received: from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.12]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 090A319560B5; Mon, 16 Jun 2025 09:49:15 +0000 (UTC) Received: from laptop.redhat.com (unknown [10.45.224.77]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 03ADB19560A3; Mon, 16 Jun 2025 09:49:09 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, qemu-devel@nongnu.org, qemu-arm@nongnu.org, peter.maydell@linaro.org, imammedo@redhat.com, gustavo.romero@linaro.org, anisinha@redhat.com, mst@redhat.com, shannon.zhaosl@gmail.com Cc: pbonzini@redhat.com, Jonathan.Cameron@huawei.com, philmd@linaro.org, alex.bennee@linaro.org Subject: [PATCH v3 00/29] ACPI PCI Hotplug support on ARM Date: Mon, 16 Jun 2025 11:46:29 +0200 Message-ID: <20250616094903.885753-1-eric.auger@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 Received-SPF: pass client-ip=170.10.133.124; envelope-from=eric.auger@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, 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_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable 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 This series enables ACPI PCI hotplug/hotunplug on ARM. It is not enabled by default and ACPI PCI hotplug can be selected by setting: -global acpi-ged.acpi-pci-hotplug-with-bridge-support=on Expected benefits should be similar to those listed in [1], ie. removal of some racy behaviors, improved latencies. The infrastructure used in x86 is heavily reused and a huge part of the series consists in moving code from hw/i386/acpi-build.c to a generic place and slightly adapting it to make it usable on ARM. The DSDT table is augmented to support ACPI PCI hotplug elements. On ARM we use use a GED event to notify the OS about hotplug events. Best Regards Eric This series can be found at: https://github.com/eauger/qemu/tree/arm-acpi-pcihp-v3 previous series: https://github.com/eauger/qemu/tree/arm-acpi-pcihp-v2 History: v2 -> v3: - lot of changes taking into account various feedbacks (many thanks to all reviewers). Please refer to individual patches for details. Main changes: - no more machine option, acpi pci hp is not set by default. - removal of 2 unused variables in the osc method - introduction of GED property to set the bus - rework of the init/reset sequence - fix virtio-mem-pci hotplug regression v1 -> v2: - collected a bunch of R-bs from Gustavo (many thanks!) - Fixed the breakage of bios-tables-test in TCG mode by incorporating Gustavo's patches (part of [PATCH 0/5] ACPI tests for PCI Hotplug on ARM https://lore.kernel.org/all/20250526053123.1434204-1-gustavo.romero@linaro.org/) - Tweeked the dsdt aml changes to avoid any dsdt blob difference when acpi-pcihp is off. RFC -> v1: - First 3 trivial patches were pulled separately - Fix of the register region size (0x18), ie. ACPI_PCIHP_SIZE - addition of aml_pci_edsm which was not called in RFC - acpi-index feature is now fixed. vms->bus was not set on acpi_pcihp_init. The init sequence is still hacky though. Suggestions are welcome. [1] [PATCH v6 0/6] Use ACPI PCI hot-plug for Q35 https://lore.kernel.org/all/20210713004205.775386-1-jusual@redhat.com/ Eric Auger (25): hw/i386/acpi-build: Make aml_pci_device_dsm() static hw/acpi/ged: Add a acpi-pci-hotplug-with-bridge-support property hw/acpi: Rename and move build_x86_acpi_pci_hotplug to pcihp hw/pci-host/gpex-acpi: Add native_pci_hotplug arg to acpi_dsdt_add_pci_osc hw/pci-host/gpex-acpi: Split host bridge OSC and DSM generation hw/pci-host/gpex-acpi: retrieve and use GED acpi_pcihp setting hw/i386/acpi-build: Turn build_q35_osc_method into a generic method hw/pci-host/gpex-acpi: Use build_pci_host_bridge_osc_method tests/qtest/bios-tables-test: Update DSDT blobs after GPEX _OSC change hw/i386/acpi-build: Introduce build_append_pcihp_resources() helper hw/acpi/pcihp: Add an AmlRegionSpace arg to build_acpi_pci_hotplug hw/i386/acpi-build: Move build_append_notification_callback to pcihp hw/i386/acpi-build: Move build_append_pci_bus_devices/pcihp_slots to pcihp hw/i386/acpi-build: Use AcpiPciHpState::root in acpi_set_pci_info hw/i386/acpi-build: Move aml_pci_edsm to a generic place hw/arm/virt-acpi-build: Modify the DSDT ACPI table to enable ACPI PCI hotplug hw/acpi/ged: Add a bus link property hw/arm/virt: Pass the bus on the ged creation hw/acpi/ged: Prepare the device to react to PCI hotplug events hw/acpi/ged: Call pcihp plug callbacks in hotplug handler implementation hw/acpi/ged: Support migration of AcpiPciHpState hw/core/sysbus: Introduce sysbus_mmio_map_name() helper hw/arm/virt: Use a SysBusDevice variable in create_acpi_ged() hw/arm/virt: Let virt support pci hotplug/unplug GED event hw/arm/virt: Plug pcihp hotplug/hotunplug callbacks Gustavo Romero (4): tests/qtest/bios-tables-test: Prepare for changes in the DSDT table tests/qtest/bios-tables-test: Prepare for addition of acpi pci hp tests tests/qtest/bios-tables-test: Add aarch64 ACPI PCI hotplug test qtest/bios-tables-test: Create DSDT 'acpipcihp" variant blob hw/i386/acpi-build.h | 4 - include/hw/acpi/generic_event_device.h | 7 + include/hw/acpi/pci.h | 5 +- include/hw/acpi/pcihp.h | 17 +- include/hw/arm/virt.h | 1 + include/hw/pci-host/gpex.h | 1 + include/hw/sysbus.h | 1 + hw/acpi/generic_event_device.c | 68 +++ hw/acpi/pci-bridge.c | 54 ++ hw/acpi/pci.c | 50 ++ hw/acpi/pcihp.c | 435 ++++++++++++++- hw/arm/virt-acpi-build.c | 27 + hw/arm/virt.c | 100 +++- hw/core/sysbus.c | 11 + hw/i386/acpi-build.c | 528 +----------------- hw/pci-host/gpex-acpi.c | 74 +-- tests/qtest/bios-tables-test.c | 34 ++ hw/arm/Kconfig | 2 + tests/data/acpi/aarch64/virt/DSDT | Bin 5196 -> 5158 bytes .../data/acpi/aarch64/virt/DSDT.acpihmatvirt | Bin 5282 -> 5244 bytes tests/data/acpi/aarch64/virt/DSDT.acpipcihp | Bin 0 -> 5973 bytes tests/data/acpi/aarch64/virt/DSDT.memhp | Bin 6557 -> 6519 bytes tests/data/acpi/aarch64/virt/DSDT.pxb | Bin 7679 -> 7603 bytes tests/data/acpi/aarch64/virt/DSDT.topology | Bin 5398 -> 5360 bytes tests/data/acpi/x86/microvm/DSDT.pcie | Bin 3023 -> 2985 bytes 25 files changed, 817 insertions(+), 602 deletions(-) create mode 100644 tests/data/acpi/aarch64/virt/DSDT.acpipcihp -- 2.49.0