From patchwork Tue Nov 1 13:57:32 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Akihiko Odaki X-Patchwork-Id: 13027258 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 634A6C433FE for ; Tue, 1 Nov 2022 17:15:12 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oprmJ-0005i3-Ev; Tue, 01 Nov 2022 09:58:07 -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 1oprmH-0005hF-B6 for qemu-devel@nongnu.org; Tue, 01 Nov 2022 09:58:05 -0400 Received: from mail-pf1-x429.google.com ([2607:f8b0:4864:20::429]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1oprmC-0003i8-Tv for qemu-devel@nongnu.org; Tue, 01 Nov 2022 09:58:03 -0400 Received: by mail-pf1-x429.google.com with SMTP id m6so13567388pfb.0 for ; Tue, 01 Nov 2022 06:58:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=daynix-com.20210112.gappssmtp.com; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=RAAx4otNZiMAa7oEUdCfdvwWSSh4pD9UYBMfNVOT/w8=; b=O8EmdVnkBAcsTFzkYWSu+PcuIeJkIhTgukSYgJHv5v4EO6VGX3CL5nbWLqDmfOHzwz rfDTSkVVQ3puHmjRiw2vwITGe8qLy+Hmw5jGyQ4KkJjy0QVi1uJe3pjCSrTkfJ9SP0Wj +rzWLhsP4zIKUNXlt9NkHJdNwCoKJPnnG904QCxQ93Oq2d4fl0oRx9pHQFB8C/7/e5/U t1yka/V14ytqGe1neGgWC5i65v87kqaNKPEOqkELpUrHsVpL1eKXowwqMm+twjfYGpA6 806bLPTttPd03018XusH4QUNmjH+JDk6fAiJmw+DBd8GVBcHOPYLvOTequNNtaVRrWR3 z0yA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=RAAx4otNZiMAa7oEUdCfdvwWSSh4pD9UYBMfNVOT/w8=; b=zHjAcH//ALgZa3YDM470/sSXse9LNs6hDB3hQ4n+7QvMZwVUpJL2A+eFN5jMpIBQ9v UNg9SE/qa178FDrVQTwk00FWO7H6aRTqcVf6zIoE11jSvM8XBOwIEgkbkx/ucJxSEh6i RfLlC03epMsAZCEfai+Pj4Cjcega8aF0c4R48WeCkRCMOsme/bFMfdhcHwALmelP0s8U wKus2bNUCLeQ3018jld9paVSsavgoN3E2itFuXC+J2Bwc/Gig/jr+/uPtiM/+Ycltn/f llMT/Jx2wNTbBYI+e/wRj/BrQFMVyqvnGXNz8uq0DT7hwJUo/XYlkiMIsSlHBUD8c3B1 5phA== X-Gm-Message-State: ACrzQf02XeetDiytoEPFUt53KAplkFI4amiy1VBVwcvoetOgC73yt/lG MVxwzpVAS3QHZDKv8JrpUehmpcAw8Y5sb5tK X-Google-Smtp-Source: AMsMyM4u/PD0GoSvN35lRo1my19fb+SORCD2zWQo70f6qerrol+57mRew6Ixqn3NefPc04IVevTBAQ== X-Received: by 2002:a65:6e8c:0:b0:435:144e:445e with SMTP id bm12-20020a656e8c000000b00435144e445emr17804590pgb.96.1667311079316; Tue, 01 Nov 2022 06:57:59 -0700 (PDT) Received: from fedora.flets-east.jp ([2400:4050:c360:8200:8ae8:3c4:c0da:7419]) by smtp.gmail.com with ESMTPSA id y4-20020aa79ae4000000b0056bdc3f5b29sm6510722pfp.186.2022.11.01.06.57.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 01 Nov 2022 06:57:58 -0700 (PDT) From: Akihiko Odaki To: Cc: qemu-devel@nongnu.org, qemu-block@nongnu.org, qemu-arm@nongnu.org, "Michael S . Tsirkin" , Marcel Apfelbaum , Gerd Hoffmann , Paolo Bonzini , Richard Henderson , Eduardo Habkost , John Snow , Dmitry Fleytman , Jason Wang , Stefan Weil , Keith Busch , Klaus Jensen , Peter Maydell , Andrey Smirnov , Paul Burton , Aleksandar Rikalo , Yan Vugenfirer , Yuri Benditovich , =?utf-8?q?Philippe_Mathieu-?= =?utf-8?q?Daud=C3=A9?= , Akihiko Odaki Subject: [PATCH v8 00/17] pci: Abort if pci_add_capability fails Date: Tue, 1 Nov 2022 22:57:32 +0900 Message-Id: <20221101135749.4477-1-akihiko.odaki@daynix.com> X-Mailer: git-send-email 2.38.1 MIME-Version: 1.0 Received-SPF: none client-ip=2607:f8b0:4864:20::429; envelope-from=akihiko.odaki@daynix.com; helo=mail-pf1-x429.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=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: , Sender: "Qemu-devel" Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org pci_add_capability appears most PCI devices. Its error handling required lots of code, and led to inconsistent behaviors such as: - passing error_abort - passing error_fatal - asserting the returned value - propagating the error to the caller - skipping the rest of the function - just ignoring The code generating errors in pci_add_capability had a comment which says: > Verify that capabilities don't overlap. Note: device assignment > depends on this check to verify that the device is not broken. > Should never trigger for emulated devices, but it's helpful for > debugging these. Indeed vfio has some code that passes capability offsets and sizes from a physical device, but it explicitly pays attention so that the capabilities never overlap and the only exception are MSI and MSI-X capabilities. Therefore, we can add code specific to the case, and always assert that capabilities never overlap in the other cases, resolving these inconsistencies. v8: - Return boolean with pci_check_capability_overlap() (Philippe Mathieu-Daudé) v7: - Perform checks in vfio_msi_setup() and vfio_msix_setup() (Alex Williamson) v6: - Error in case of MSI/MSI-X capability overlap (Alex Williamson) v5: - Fix capability ID specification in vfio_msi_early_setup (Alex Williamson) - Use range_covers_byte() (Alex Williamson) - warn_report() in case of MSI/MSI-X capability overlap (Alex Williamson) v4: - Fix typos in messages (Markus Armbruster) - hw/vfio/pci: Ensure MSI and MSI-X do not overlap (Alex Williamson) v3: - Correct patch split between virtio-pci and pci (Markus Armbruster) - Add messages for individual patches (Markus Armbruster) - Acked-by: Jonathan Cameron Akihiko Odaki (17): hw/vfio/pci: Ensure MSI and MSI-X do not overlap pci: Allow to omit errp for pci_add_capability hw/i386/amd_iommu: Omit errp for pci_add_capability ahci: Omit errp for pci_add_capability e1000e: Omit errp for pci_add_capability eepro100: Omit errp for pci_add_capability hw/nvme: Omit errp for pci_add_capability msi: Omit errp for pci_add_capability hw/pci/pci_bridge: Omit errp for pci_add_capability pcie: Omit errp for pci_add_capability pci/shpc: Omit errp for pci_add_capability msix: Omit errp for pci_add_capability pci/slotid: Omit errp for pci_add_capability hw/pci-bridge/pcie_pci_bridge: Omit errp for pci_add_capability hw/vfio/pci: Omit errp for pci_add_capability virtio-pci: Omit errp for pci_add_capability pci: Remove legacy errp from pci_add_capability docs/pcie_sriov.txt | 4 +-- hw/display/bochs-display.c | 4 +-- hw/i386/amd_iommu.c | 21 +++--------- hw/ide/ich.c | 8 ++--- hw/net/e1000e.c | 22 +++---------- hw/net/eepro100.c | 7 +--- hw/nvme/ctrl.c | 14 ++------ hw/pci-bridge/cxl_downstream.c | 9 ++---- hw/pci-bridge/cxl_upstream.c | 8 ++--- hw/pci-bridge/i82801b11.c | 14 ++------ hw/pci-bridge/pci_bridge_dev.c | 2 +- hw/pci-bridge/pcie_pci_bridge.c | 19 +++-------- hw/pci-bridge/pcie_root_port.c | 16 ++------- hw/pci-bridge/xio3130_downstream.c | 15 ++------- hw/pci-bridge/xio3130_upstream.c | 15 ++------- hw/pci-host/designware.c | 3 +- hw/pci-host/xilinx-pcie.c | 4 +-- hw/pci/msi.c | 9 +----- hw/pci/msix.c | 8 ++--- hw/pci/pci.c | 48 +++++++++++++-------------- hw/pci/pci_bridge.c | 21 ++++-------- hw/pci/pcie.c | 52 ++++++++---------------------- hw/pci/shpc.c | 23 ++++--------- hw/pci/slotid_cap.c | 8 ++--- hw/usb/hcd-xhci-pci.c | 3 +- hw/vfio/pci-quirks.c | 15 ++------- hw/vfio/pci.c | 29 +++++++++++------ hw/virtio/virtio-pci.c | 12 ++----- include/hw/pci/pci.h | 8 +++-- include/hw/pci/pci_bridge.h | 5 ++- include/hw/pci/pcie.h | 11 +++---- include/hw/pci/shpc.h | 3 +- include/hw/virtio/virtio-pci.h | 2 +- 33 files changed, 133 insertions(+), 309 deletions(-)