From patchwork Fri Sep 13 03:44:40 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Akihiko Odaki X-Patchwork-Id: 13802976 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 CDC01EEEC08 for ; Fri, 13 Sep 2024 03:48:11 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1soxFq-0006xl-S0; Thu, 12 Sep 2024 23:45:54 -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 1soxFj-0006Rn-7X for qemu-devel@nongnu.org; Thu, 12 Sep 2024 23:45:48 -0400 Received: from mail-pg1-x535.google.com ([2607:f8b0:4864:20::535]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1soxFg-0008IN-Tr for qemu-devel@nongnu.org; Thu, 12 Sep 2024 23:45:46 -0400 Received: by mail-pg1-x535.google.com with SMTP id 41be03b00d2f7-7d7a9200947so239125a12.3 for ; Thu, 12 Sep 2024 20:45:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=daynix-com.20230601.gappssmtp.com; s=20230601; t=1726199144; x=1726803944; darn=nongnu.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=NowZm/EG31u8eyDPWUoV8f+k0nmNu308nWwlnQDkLrY=; b=cNKvcU9kMeoBKKUH79KmuNKPLr0PvcQlzk7J9XY7siEldjEvqKgtdcg8BRNDBF78Ob TcvHqOQlTIAHmO2yyBfcBpRgN5I0rybs36OCjajUToUdJxqCczaQQZeRiAHkuna7OsXF ChT5uRobmESZPkn+IbzhjG+brpe3ufFc9zug1jKO1lS9CLL+vAUZjJm713npFyt6lgsr npNBBMxIC8zZyqdmkPAkDhkxTkeHISyfhnOpny8ABzLI5Eqe49U3bNAmsyngjsEU+/eV 46xQWnEVNGy/FrlV3cT4M24WN7tfkZkfNaazzWjodrVbwWWvGtMWZM5vgKqf9Rr3ZI0l Dt3Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1726199144; x=1726803944; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=NowZm/EG31u8eyDPWUoV8f+k0nmNu308nWwlnQDkLrY=; b=mcpy11oybIROKLy/kyJXyD+4V/xFNa0qAiKpXTvD8t4P8VC3zy39Yr+YZPIDl9Y3lS bGdbO44iN/8/kJNRqk1CGmsPZV6ca7r/KImmShTbTYSuz9Nzc+6ndJVsgj+wLfM6T6Jk KllbVCiHptDrplR0zMSv7D/tr5Y3U+pV1HQ2690+dHmmvAvTw6+3iG1oEN4MU15N09VA OUuzFKraT3Zl+AzC8dPIaNXpQIQ54dxVY3gIA2sbF2qd91jbNFSPa1Ai8CEp6vK2s7Vy Xdmbu0LpQtff2+YrqvQ/FMMnNihM4kcoC+FnxXj9KLpLwDCpgOkWAu/oyGty5i1VrWuP PPzw== X-Gm-Message-State: AOJu0YyOsTMbdUNAh8uNaBx3X1+iVDP7y4AtLFAafWdP+L3AnYtPhziT mYvVefGdjJinVClzQP0PVcgIbZ2VUOqDLf/mm5njtojT4e1y9UuQE6rOCi3nKyHgtIKgHraAfVl niug= X-Google-Smtp-Source: AGHT+IF4cqymPAj9UGIKFAW6jLvPO15hOJ9Vmo1TlJPcBccMmj7tR9ZoIceg4Qeagc4HqR2IWHb/EQ== X-Received: by 2002:a05:6a21:1798:b0:1cf:51a1:8e89 with SMTP id adf61e73a8af0-1d112eaf56amr2201382637.47.1726199143658; Thu, 12 Sep 2024 20:45:43 -0700 (PDT) Received: from localhost ([157.82.202.230]) by smtp.gmail.com with UTF8SMTPSA id d2e1a72fcca58-71908fca444sm5281511b3a.3.2024.09.12.20.45.40 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 12 Sep 2024 20:45:43 -0700 (PDT) From: Akihiko Odaki Date: Fri, 13 Sep 2024 12:44:40 +0900 Subject: [PATCH v16 12/13] hw/pci: Use -1 as the default value for rombar MIME-Version: 1.0 Message-Id: <20240913-reuse-v16-12-d016b4b4f616@daynix.com> References: <20240913-reuse-v16-0-d016b4b4f616@daynix.com> In-Reply-To: <20240913-reuse-v16-0-d016b4b4f616@daynix.com> To: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , "Michael S. Tsirkin" , Marcel Apfelbaum , Alex Williamson , =?utf-8?q?C=C3=A9dric_Le_Goa?= =?utf-8?q?ter?= , Paolo Bonzini , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Eduardo Habkost , Sriram Yagnaraman , Jason Wang , Keith Busch , Klaus Jensen , Markus Armbruster , Matthew Rosato , Eric Farman Cc: qemu-devel@nongnu.org, qemu-block@nongnu.org, Akihiko Odaki X-Mailer: b4 0.14-dev-fd6e3 Received-SPF: none client-ip=2607:f8b0:4864:20::535; envelope-from=akihiko.odaki@daynix.com; helo=mail-pg1-x535.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=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: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org vfio_pci_size_rom() distinguishes whether rombar is explicitly set to 1 by checking dev->opts, bypassing the QOM property infrastructure. Use -1 as the default value for rombar to tell if the user explicitly set it to 1. The property is also converted from unsigned to signed. -1 is signed so it is safe to give it a new meaning. The values in [2 ^ 31, 2 ^ 32) become invalid, but nobody should have typed these values by chance. Suggested-by: Markus Armbruster Signed-off-by: Akihiko Odaki Reviewed-by: Markus Armbruster --- include/hw/pci/pci_device.h | 2 +- hw/pci/pci.c | 2 +- hw/vfio/pci.c | 5 ++--- 3 files changed, 4 insertions(+), 5 deletions(-) diff --git a/include/hw/pci/pci_device.h b/include/hw/pci/pci_device.h index 1ff3ce94e25b..8fa845beee5e 100644 --- a/include/hw/pci/pci_device.h +++ b/include/hw/pci/pci_device.h @@ -148,7 +148,7 @@ struct PCIDevice { uint32_t romsize; bool has_rom; MemoryRegion rom; - uint32_t rom_bar; + int32_t rom_bar; /* INTx routing notifier */ PCIINTxRoutingNotifier intx_routing_notifier; diff --git a/hw/pci/pci.c b/hw/pci/pci.c index 4c7be5295110..d2eaf0c51dde 100644 --- a/hw/pci/pci.c +++ b/hw/pci/pci.c @@ -71,7 +71,7 @@ static Property pci_props[] = { DEFINE_PROP_PCI_DEVFN("addr", PCIDevice, devfn, -1), DEFINE_PROP_STRING("romfile", PCIDevice, romfile), DEFINE_PROP_UINT32("romsize", PCIDevice, romsize, UINT32_MAX), - DEFINE_PROP_UINT32("rombar", PCIDevice, rom_bar, 1), + DEFINE_PROP_INT32("rombar", PCIDevice, rom_bar, -1), DEFINE_PROP_BIT("multifunction", PCIDevice, cap_present, QEMU_PCI_CAP_MULTIFUNCTION_BITNR, false), DEFINE_PROP_BIT("x-pcie-lnksta-dllla", PCIDevice, cap_present, diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index 2407720c3530..dc53837eac73 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -1012,7 +1012,6 @@ static void vfio_pci_size_rom(VFIOPCIDevice *vdev) { uint32_t orig, size = cpu_to_le32((uint32_t)PCI_ROM_ADDRESS_MASK); off_t offset = vdev->config_offset + PCI_ROM_ADDRESS; - DeviceState *dev = DEVICE(vdev); char *name; int fd = vdev->vbasedev.fd; @@ -1046,12 +1045,12 @@ static void vfio_pci_size_rom(VFIOPCIDevice *vdev) } if (vfio_opt_rom_in_denylist(vdev)) { - if (dev->opts && qdict_haskey(dev->opts, "rombar")) { + if (vdev->pdev.rom_bar > 0) { warn_report("Device at %s is known to cause system instability" " issues during option rom execution", vdev->vbasedev.name); error_printf("Proceeding anyway since user specified" - " non zero value for rombar\n"); + " positive value for rombar\n"); } else { warn_report("Rom loading for device at %s has been disabled" " due to system instability issues",