From nobody Tue Jul 1 13:32:22 2025 Delivered-To: importer2@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer2=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1652872624181667.8197170179158; Wed, 18 May 2022 04:17:04 -0700 (PDT) Received: from localhost ([::1]:51252 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nrHfq-00046R-Lm for importer2@patchew.org; Wed, 18 May 2022 07:17:02 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:50516) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nrHYF-0004hc-JE for qemu-devel@nongnu.org; Wed, 18 May 2022 07:09:20 -0400 Received: from mail.ilande.co.uk ([2001:41c9:1:41f::167]:40922) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nrHYE-0007H4-2H for qemu-devel@nongnu.org; Wed, 18 May 2022 07:09:11 -0400 Received: from [2a00:23c4:8ba4:3700:6895:4d68:6f22:ca1c] (helo=kentang.home) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1nrHXB-000AVy-LT; Wed, 18 May 2022 12:08:09 +0100 From: Mark Cave-Ayland To: mst@redhat.com, imammedo@redhat.com, ani@anisinha.ca, jean-philippe@linaro.org, qemu-devel@nongnu.org Date: Wed, 18 May 2022 12:08:38 +0100 Message-Id: <20220518110839.8681-6-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20220518110839.8681-1-mark.cave-ayland@ilande.co.uk> References: <20220518110839.8681-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-SA-Exim-Connect-IP: 2a00:23c4:8ba4:3700:6895:4d68:6f22:ca1c X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 5/6] hw/acpi/viot: sort VIOT ACPI table entries by PCI host bus min_bus X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) 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+importer2=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk 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, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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+importer2=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZM-MESSAGEID: 1652872624756100001 Content-Type: text/plain; charset="utf-8" This ensures that the VIOT ACPI table output is always stable for a given P= CI topology by ensuring that entries are ordered according to min_bus. Signed-off-by: Mark Cave-Ayland Reviewed-by: Ani Sinha --- hw/acpi/viot.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/hw/acpi/viot.c b/hw/acpi/viot.c index ce3b7b8c75..f5714b95bd 100644 --- a/hw/acpi/viot.c +++ b/hw/acpi/viot.c @@ -64,6 +64,20 @@ static int pci_host_bridges(Object *obj, void *opaque) return 0; } =20 +static int pci_host_range_compare(gconstpointer a, gconstpointer b) +{ + struct viot_pci_host_range *range_a =3D (struct viot_pci_host_range *)= a; + struct viot_pci_host_range *range_b =3D (struct viot_pci_host_range *)= b; + + if (range_a->min_bus < range_b->min_bus) { + return -1; + } else if (range_a->min_bus > range_b->min_bus) { + return 1; + } else { + return 0; + } +} + /* * Generate a VIOT table with one PCI-based virtio-iommu that manages PCI * endpoints. @@ -87,6 +101,9 @@ void build_viot(MachineState *ms, GArray *table_data, BI= OSLinker *linker, object_child_foreach_recursive(OBJECT(ms), pci_host_bridges, pci_host_ranges); =20 + /* Sort the pci host ranges by min_bus */ + g_array_sort(pci_host_ranges, pci_host_range_compare); + /* ACPI table header */ acpi_table_begin(&table, table_data); /* Node count */ --=20 2.20.1