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[124.169.212.233]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-21c2d3a8a2bsm18658805ad.142.2025.01.17.09.28.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 17 Jan 2025 09:28:52 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1737134933; x=1737739733; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=DEqWTc5ydAaQroS10fFe0iUZijmNw6ECGMsxRlRKy+Y=; b=gZFJKHJrzHTT0DrX0rfCEoCNUNBzfgygg57C6Ia78PYZ1Rvf6F49tz6ICtks3rvHty 2PdHLXFzvYA3i7dT/PbHfcoL2R1+k7gOlt7fxpzvEebbZki2tpBK+OdPmnhDFuqAyClX Aj0LBxnzJG7EhjtKEHPFnbkJsxcvNpPlBS4Lx3tfMo4pDVH4WL6p4pod0S6T6tXqRAW+ a4gB5QhJs1vrrouUW7mwGBxpJO4CUJY08mfw19XgCsrWBJZimtFGwDY0h+9G7Qj6muBA Vio2DJljGX9SDfCmzwWJU5Xi4sBhpzn2FDBWO0KD8Ywqk6G4O546mhiI7dv+25hUnWpN Hw2w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1737134933; x=1737739733; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=DEqWTc5ydAaQroS10fFe0iUZijmNw6ECGMsxRlRKy+Y=; b=QHXvtTsPQ0QjJ7YAWBJouHmW8W5j8CJZflwGupmYvdFqj/UpRrVJJnnw7foh1FYZ7n hCU9xDBQulynfz1HUwNpGN/hfPAjRg+yxiclN6ue5cLxforLV52L1hVriEgNhz+2uaLG hV0Kr6n1YsSIPmqRp7f8k3Qzxdd1703yxp5WQU+GwFhsNU5nkIPygI50BxkLUXzYyi2/ mzotRrTZSCViAlyXTM7yt/pvD5LBiLwFGKhWIge6QMPhj+hn0bzD07ap26Y+md+Ux5zf qVIPTdV575hn+j0u7GF5572KWDE72OBY5hiLhDyBYHh3iPDHgzrHQmg9aMX6NSq9KKHz gJhg== X-Forwarded-Encrypted: i=1; AJvYcCXMMwN7z8RSIvYq5oNI1jwWsRzilsIUl4uEoM+CDofYcfo5pHo9Ft0qCmLtFjciA/79YHt/TqMTPplv@nongnu.org X-Gm-Message-State: AOJu0YwNaUQXbE+aNDD+Av0Gs78gse3zNAdqy/pBONRzFl/d2gK1T+Vx gxr6wy724FDddQ188ErwcV7P2nx2asGaNY3VkG9OcOWLKewiQDODUx1Jgg== X-Gm-Gg: ASbGncsupkD5cvLencxB+f6drxWonB1OXLKsilzqIrFTHIzbKktKge1oPxCi39jsYWL wPjskAulbBWAVlhM9KtOGzOIHHkxwSRBfA276ufHhHWtP/0Yy3A2643dSJpyeFjimOUoFtSB1PP ZCAozyidZUui6TGtkVChR23TsaSuMBQyr+DsqwW0A2jWs5ByOaWwPz/NdPKsS9GNEVMRGyouhrC KpXnFWhCHShGDs/WgMQaw832ADMx2KYO86CorkiWaq4qLtdyWDox32Bkl4OmozBgYgJ4/RMAI6G TaEBHsf7jxbxWa8= X-Google-Smtp-Source: AGHT+IHNy+2QauNlXQHFcE6ESJW0IkNBP2c+Hm54EYqutzDkn3SmkYg4S2i4ndP63AR+LvivBTE59A== X-Received: by 2002:a17:902:ce09:b0:216:2bd7:1c2e with SMTP id d9443c01a7336-21c3540acc8mr51546615ad.18.1737134933310; Fri, 17 Jan 2025 09:28:53 -0800 (PST) From: Nicholas Piggin To: "Michael S . Tsirkin" Cc: Nicholas Piggin , Marcel Apfelbaum , qemu-devel@nongnu.org, Dmitry Fleytman , Akihiko Odaki , Sriram Yagnaraman Subject: [PATCH 1/2] hw/pci/msix: Warn on PBA writes Date: Sat, 18 Jan 2025 03:28:40 +1000 Message-ID: <20250117172842.406338-2-npiggin@gmail.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20250117172842.406338-1-npiggin@gmail.com> References: <20250117172842.406338-1-npiggin@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::631; envelope-from=npiggin@gmail.com; helo=mail-pl1-x631.google.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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, 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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @gmail.com) X-ZM-MESSAGEID: 1737135006271019000 Content-Type: text/plain; charset="utf-8" Of the MSI-X PBA pending bits, the PCI Local Bus Specification says: Software should never write, and should only read Pending Bits. If software writes to Pending Bits, the result is undefined. Log a GUEST_ERROR message if the PBA is written to by software. Cc: Michael S. Tsirkin Cc: Marcel Apfelbaum Cc: Dmitry Fleytman Cc: Akihiko Odaki Cc: Sriram Yagnaraman Signed-off-by: Nicholas Piggin Reviewed-by: Akihiko Odaki Reviewed-by: Phil Dennis-Jordan Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- hw/pci/msix.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/hw/pci/msix.c b/hw/pci/msix.c index 57ec7084a47..66f27b9d712 100644 --- a/hw/pci/msix.c +++ b/hw/pci/msix.c @@ -15,6 +15,7 @@ */ =20 #include "qemu/osdep.h" +#include "qemu/log.h" #include "hw/pci/msi.h" #include "hw/pci/msix.h" #include "hw/pci/pci.h" @@ -260,6 +261,14 @@ static uint64_t msix_pba_mmio_read(void *opaque, hwadd= r addr, static void msix_pba_mmio_write(void *opaque, hwaddr addr, uint64_t val, unsigned size) { + PCIDevice *dev =3D opaque; + + qemu_log_mask(LOG_GUEST_ERROR, + "PCI [%s:%02x:%02x.%x] attempt to write to MSI-X " + "PBA at 0x%" FMT_PCIBUS ", ignoring.\n", + pci_root_bus_path(dev), pci_dev_bus_num(dev), + PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn), + addr); } =20 static const MemoryRegionOps msix_pba_mmio_ops =3D { --=20 2.45.2 From nobody Wed Feb 5 12:51:37 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=gmail.com ARC-Seal: i=1; a=rsa-sha256; t=1737135005; cv=none; d=zohomail.com; s=zohoarc; b=m556vAKKokmRWxG1AuYUZYJ5qcQ3/k1U16No6ypeDnOTerUB0NrC0NKLn3zX/SLRS3B19rpvCWoyxvJWbErcO/Ojd6jFzWceGd/qHulaPp7Lss3Pu1/wkbbd1kHKw7tLmrIWclFh1qVtGrWTOhECyMlhWlTPMHd71dHpnlLqcyI= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1737135005; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=xGPgC9P3Ba0DssIQxEX94j+fNUvlB/TMC/uHifO9Zmk=; b=MuLMaJsN0vAwQEtKotcEeNV9vMyztFjED5fKf39Ty7IrWZv5cgM0zGUzLSxJmGhoMLO08vbeMR3TOxr/0brnrMOd0nL1OK8u60wTFOW1OzvMkRkjuqTwLwaF9tPlmBIPQ9W6BeS6LycYI4HvewnZH4OViyGaAERavnTRsj5GGP4= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 17371350053741019.5345013449205; Fri, 17 Jan 2025 09:30:05 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tYq9V-0004Hc-QB; Fri, 17 Jan 2025 12:29:01 -0500 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 1tYq9T-0004H9-30 for qemu-devel@nongnu.org; Fri, 17 Jan 2025 12:28:59 -0500 Received: from mail-pl1-x62e.google.com ([2607:f8b0:4864:20::62e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1tYq9R-00079k-Jw for qemu-devel@nongnu.org; Fri, 17 Jan 2025 12:28:58 -0500 Received: by mail-pl1-x62e.google.com with SMTP id d9443c01a7336-2165cb60719so45291995ad.0 for ; Fri, 17 Jan 2025 09:28:57 -0800 (PST) Received: from wheely.local0.net (124-169-212-233.tpgi.com.au. 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Tsirkin" Cc: Nicholas Piggin , Marcel Apfelbaum , qemu-devel@nongnu.org Subject: [PATCH 2/2] hw/pci: Assert a bar is not registered multiple times Date: Sat, 18 Jan 2025 03:28:41 +1000 Message-ID: <20250117172842.406338-3-npiggin@gmail.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20250117172842.406338-1-npiggin@gmail.com> References: <20250117172842.406338-1-npiggin@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::62e; envelope-from=npiggin@gmail.com; helo=mail-pl1-x62e.google.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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, 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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @gmail.com) X-ZM-MESSAGEID: 1737135006287019000 Content-Type: text/plain; charset="utf-8" Nothing should be doing this, but it doesn't get caught by pci_register_bar(). Add an assertion to prevent misuse. Signed-off-by: Nicholas Piggin Reviewed-by: Phil Dennis-Jordan --- hw/pci/pci.c | 1 + 1 file changed, 1 insertion(+) diff --git a/hw/pci/pci.c b/hw/pci/pci.c index 2afa423925c..b067a55c5bc 100644 --- a/hw/pci/pci.c +++ b/hw/pci/pci.c @@ -1391,6 +1391,7 @@ void pci_register_bar(PCIDevice *pci_dev, int region_= num, assert(hdr_type !=3D PCI_HEADER_TYPE_BRIDGE || region_num < 2); =20 r =3D &pci_dev->io_regions[region_num]; + assert(!r->size); r->addr =3D PCI_BAR_UNMAPPED; r->size =3D size; r->type =3D type; --=20 2.45.2