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[88.187.86.199]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-42cb7fa3a76sm28107081f8f.24.2025.11.24.03.47.55 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Mon, 24 Nov 2025 03:47:55 -0800 (PST) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: Marcel Apfelbaum , Jason Wang , Gustavo Romero , "Michael S. Tsirkin" , Paolo Bonzini , Peter Maydell , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Subject: [PATCH] hw/pci: Use correct bus aperture for device container size Date: Mon, 24 Nov 2025 12:47:54 +0100 Message-ID: <20251124114754.79831-1-philmd@linaro.org> X-Mailer: git-send-email 2.51.0 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::432; envelope-from=philmd@linaro.org; helo=mail-wr1-x432.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, 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Before commit 3716d5902d7 ("pci: introduce a bus master container") device view of the bus address space was correctly sized to the bus aperture, but then it always used a 64-bit aperture. Restore the previous behavior, so devices on 32-bit PCI only see 32-bit address space. Signed-off-by: Philippe Mathieu-Daudé --- hw/pci/pci.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/hw/pci/pci.c b/hw/pci/pci.c index b1eba348e06..64f33b9de04 100644 --- a/hw/pci/pci.c +++ b/hw/pci/pci.c @@ -1375,7 +1375,8 @@ static PCIDevice *do_pci_register_device(PCIDevice *pci_dev, pstrcpy(pci_dev->name, sizeof(pci_dev->name), name); memory_region_init(&pci_dev->bus_master_container_region, OBJECT(pci_dev), - "bus master container", UINT64_MAX); + "bus master container", + memory_region_size(bus->address_space_mem)); address_space_init(&pci_dev->bus_master_as, &pci_dev->bus_master_container_region, pci_dev->name); pci_dev->bus_master_as.max_bounce_buffer_size = -- 2.51.0