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 BA379C83F1A for ; Mon, 14 Jul 2025 21:30:04 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ubQkD-0007AD-3k; Mon, 14 Jul 2025 17:29:53 -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 1ubPDN-0002NE-5j for qemu-devel@nongnu.org; Mon, 14 Jul 2025 15:51:53 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ubPDH-0003mA-0F for qemu-devel@nongnu.org; Mon, 14 Jul 2025 15:51:51 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1752522705; h=from:from:reply-to: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: in-reply-to:in-reply-to:references:references; bh=LnI6GfEDERFlDAoNNrUDBOgnGNngQA53P8Ck7wEgcQE=; b=D8xcE2mrDf9CpZt3xgTnO7O+/RKxFdNjpQeUupybo5UXAS05r+5E1NlsH+YJJg5UJZ181e DZmI/OnkWIgn/7wN4dm51Ydm6twgP5sI7swutfWOOEzT2oYFJNzLbp8Nw4XtxHE6XuYlmb 7gTzyEJCDwNAs4I+zi7i57iWA8RDWyU= Received: from mail-wm1-f71.google.com (mail-wm1-f71.google.com [209.85.128.71]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-15-siY9c_QJNaW82X3wTN0dPA-1; Mon, 14 Jul 2025 15:51:43 -0400 X-MC-Unique: siY9c_QJNaW82X3wTN0dPA-1 X-Mimecast-MFC-AGG-ID: siY9c_QJNaW82X3wTN0dPA_1752522703 Received: by mail-wm1-f71.google.com with SMTP id 5b1f17b1804b1-451d7de4ae3so29996765e9.2 for ; Mon, 14 Jul 2025 12:51:43 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1752522703; x=1753127503; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:reply-to:user-agent:mime-version:date :message-id:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=LnI6GfEDERFlDAoNNrUDBOgnGNngQA53P8Ck7wEgcQE=; b=L62oyOE8SekjAWi72JAsgf8unpQh12z+Lzv+iE5n9Fxrt8JffMK88h6UZqd/IZZuio flvXXE3RB1j/rYBeM0xrtHlZlskJTQqg0fUetutM9oYnmn9rK6PcRxZj2m5mTurr2HUX vRrbi/eNnlleREoHNj+Xf6FwxMFIPcK37iUcrsraIWS/KQZKRterNVdv+HT9vpvgWw6y Dcac9xk7lV27ey+/JFlayfsqa+oNIKhe2rI6UMPOyrF5k+xRyGk9TlnuMgQPYXIfIUvM HO1ud0APpwCJu/3H3EgwnHchsnxUXEbEnYFAij7rJXRjk8A+sdGJjDNmlLLuMFoYzfqp Tq3w== X-Forwarded-Encrypted: i=1; AJvYcCV9YwPxsfJUwXBFTdjjZv1Z58EHYtou8YXmWnRkHgtciS4PC+FJBY18Od7Di8qo7ahdyXt9wfpZYBlq@nongnu.org X-Gm-Message-State: AOJu0YyRzon/cBPyWj0nsN2qzQseP5T6vGoAuwYQSZYxr8FKIiRekH0v xawvsp5k1uvqGM2zDiebZk1Y7qBAh5tOdmSnTbUHZMw7xcViBdntz0rmRWq1U/jrqttLiaAVjpk Fkm4/h/XtLa/p0RhiniEWt5MsxgEF9Q2qaGI+3JB5EOTC6FSZzdQ1M8uH X-Gm-Gg: ASbGnctZW/usC7su9qDH3DkRuAU4iDmzYm+ceHpdVoI2vrDNApKKOwwant0PmppZA0O i5kgScRLIiJiXR8Y8kr52uIBW3YA1rf0cAKH+0kManYrdDyU4ALZ5e/Ijz2hW03pBcM3NJsgAtD 993nIQ9cS+r2qf33erb08GpsRyUUTzFA1E+q9p4t0ykrr64rCtcYHOgIB73qmcbZR61G3easbEk tzibFIkg5abuVu5CrArlDYoQrLDNvaNXEVnh3Va8YtdEvkYKVXA4h58iOxBI6zo3eKtEANPNR+C xfzcu3v8tgr3QpYeMUIVLGxcajy4QSxqqmNmkNXiqOevG+3CF3B+i5xiapqMimejod7u06xsYQu CAT1KJizw38M= X-Received: by 2002:adf:edd0:0:b0:3a5:2cb5:6429 with SMTP id ffacd0b85a97d-3b5f18d96camr10752379f8f.43.1752522702481; Mon, 14 Jul 2025 12:51:42 -0700 (PDT) X-Google-Smtp-Source: AGHT+IGZrxiNc7cik/pZTMvFv1jLbtXmS/BOwyrO3HsHHyUI3xWSsKzMkJ1uvEw/jSuW8uGb7hI0RA== X-Received: by 2002:adf:edd0:0:b0:3a5:2cb5:6429 with SMTP id ffacd0b85a97d-3b5f18d96camr10752366f8f.43.1752522702004; Mon, 14 Jul 2025 12:51:42 -0700 (PDT) Received: from ?IPV6:2a01:e0a:f0e:9070:527b:9dff:feef:3874? ([2a01:e0a:f0e:9070:527b:9dff:feef:3874]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3b5e8bd1924sm13441914f8f.16.2025.07.14.12.51.40 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 14 Jul 2025 12:51:41 -0700 (PDT) Message-ID: Date: Mon, 14 Jul 2025 21:51:40 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v7 00/36] ACPI PCI Hotplug support on ARM Content-Language: en-US To: Jonathan Cameron Cc: eric.auger.pro@gmail.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, pbonzini@redhat.com, philmd@linaro.org, alex.bennee@linaro.org, alireza.sanaee@huawei.com References: <20250714080639.2525563-1-eric.auger@redhat.com> <20250714204008.00003fba@huawei.com> From: Eric Auger In-Reply-To: <20250714204008.00003fba@huawei.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=170.10.129.124; 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_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=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: eric.auger@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Hi Jonathan, On 7/14/25 9:40 PM, Jonathan Cameron wrote: > On Mon, 14 Jul 2025 10:04:44 +0200 > Eric Auger wrote: > >> 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 > Hi Eric, > > I guess you probably already know this but there is some > impact on loongarch64 when their ACPI tables tests are added. > > Rather oddly I'm getting intermittent failures on Michael's > gitlab tree but looks like the unification of _OSC affects > them as well. (should be every time, but they aren't!) > > Should just be updating their 4 DSDT variants. > > If I had a stable test setup I'd send them. Will try again > tomorrow if not resolved. just to make sure are we talking about [PATCH v3 0/5] Add bios-tables-test for LoongArch system https://lore.kernel.org/all/20250612090321.3416594-2-maobibo@loongson.cn/ Thanks Eric > > Jonathan > > > >> This series can be found at: >> https://github.com/eauger/qemu/tree/arm-acpi-pcihp-v7 >> >> previous series: >> https://github.com/eauger/qemu/tree/arm-acpi-pcihp-v6 >> >> History: >> v6 -> v7: >> - rebased after minor contextual conflict introduced >> by "hw/arm/virt: Basic CXL enablement on pci_expander_bridge >> instances pxb-cxl" in hw/arm/virt-acpi-build.c >> (hw/pci-host/gpex-acpi: Use GED acpi pcihp property) >> - collected last Igor's and Prasad's R-bs >> >> v5 -> v6: >> - collected Jonathan's R-bs >> - cropped last 2 patch commit messages (Jonathan) >> >> v4 -> v5: >> - Collected Jonathan's R-bs (many thanks!) >> - fixed the tests/qtest/bios-tables-test issue by >> creating a variant for the viot test >> - use the 3 phase reset API >> - fixed qom-test failures that were due to unconditionnal >> fetches of the GED property >> >> v3 -> v4: >> - toook into account all comments on v3 >> - static acpi-index is now supported unconditionally >> from acpi pcihp option. See indiviual patches. >> - I hit a problem with ref block generation at >> [19/32] tests/qtest/bios-tables-test: Update ARM DSDT reference >> blobs: despite I regenerate the blobs, I get some errors. >> >> 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 (32): >> hw/i386/acpi-build: Make aml_pci_device_dsm() static >> 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/acpi/ged: Add a acpi-pci-hotplug-with-bridge-support property >> hw/pci-host/gpex-acpi: Use GED acpi pcihp property >> 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 >> qtest/bios-tables-test: Prepare for fixing the aarch64 viot test >> qtest/bios-tables-test: Add a variant to the aarch64 viot test >> qtest/bios-tables-test: Generate DSDT.viot >> hw/arm/virt-acpi-build: Let non hotplug ports support static >> acpi-index >> tests/qtest/bios-tables-test: Update ARM DSDT reference blobs >> 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: Call pcihp plug callbacks in hotplug handler >> implementation >> hw/acpi/pcihp: Remove root arg in acpi_pcihp_init >> hw/acpi/ged: Prepare the device to react to PCI hotplug events >> hw/acpi/ged: Support migration of AcpiPciHpState >> hw/core/sysbus: Introduce sysbus_mmio_map_name() helper >> hw/arm/virt: Minor code reshuffling in create_acpi_ged >> hw/arm/virt: Let virt support pci hotplug/unplug GED event >> qtest/bios-tables-test: Generate reference blob for >> DSDT.hpoffacpiindex >> qtest/bios-tables-test: Generate reference blob for DSDT.acpipcihp >> >> Gustavo Romero (4): >> tests/qtest/bios-tables-test: Prepare for changes in the DSDT table >> tests/qtest/bios-tables-test: Prepare for changes in the arm virt 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 >> >> hw/i386/acpi-build.h | 4 - >> include/hw/acpi/generic_event_device.h | 17 +- >> 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/acpi-pci-hotplug-stub.c | 2 +- >> hw/acpi/generic_event_device.c | 77 +++ >> hw/acpi/ich9.c | 7 +- >> hw/acpi/pci-bridge.c | 54 ++ >> hw/acpi/pci.c | 50 ++ >> hw/acpi/pcihp.c | 439 ++++++++++++++- >> hw/acpi/piix4.c | 5 +- >> hw/arm/virt-acpi-build.c | 38 ++ >> hw/arm/virt.c | 27 +- >> hw/core/sysbus.c | 11 + >> hw/i386/acpi-build.c | 532 +----------------- >> hw/pci-host/gpex-acpi.c | 74 +-- >> tests/qtest/bios-tables-test.c | 53 ++ >> hw/arm/Kconfig | 2 + >> hw/pci-host/Kconfig | 1 + >> tests/data/acpi/aarch64/virt/DSDT | Bin 5196 -> 5293 bytes >> .../data/acpi/aarch64/virt/DSDT.acpihmatvirt | Bin 5282 -> 5379 bytes >> tests/data/acpi/aarch64/virt/DSDT.acpipcihp | Bin 0 -> 6202 bytes >> .../acpi/aarch64/virt/DSDT.hpoffacpiindex | Bin 0 -> 5347 bytes >> tests/data/acpi/aarch64/virt/DSDT.memhp | Bin 6557 -> 6654 bytes >> tests/data/acpi/aarch64/virt/DSDT.pxb | Bin 7679 -> 7768 bytes >> tests/data/acpi/aarch64/virt/DSDT.topology | Bin 5398 -> 5495 bytes >> tests/data/acpi/aarch64/virt/DSDT.viot | Bin 0 -> 5310 bytes >> tests/data/acpi/riscv64/virt/DSDT | Bin 3576 -> 3538 bytes >> tests/data/acpi/x86/microvm/DSDT.pcie | Bin 3023 -> 2985 bytes >> 32 files changed, 811 insertions(+), 607 deletions(-) >> create mode 100644 tests/data/acpi/aarch64/virt/DSDT.acpipcihp >> create mode 100644 tests/data/acpi/aarch64/virt/DSDT.hpoffacpiindex >> create mode 100644 tests/data/acpi/aarch64/virt/DSDT.viot >>