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Sat, 15 Oct 2022 00:08:35 -0500 From: Vikram Garhwal To: CC: , , Stefano Stabellini , Anthony Perard , "Paul Durrant" , "open list:X86 Xen CPUs" Subject: [PATCH v1 08/12] hw/xen/xen-hvm-common: skip ioreq creation on ioreq registration failure Date: Fri, 14 Oct 2022 22:07:46 -0700 Message-ID: <20221015050750.4185-9-vikram.garhwal@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20221015050750.4185-1-vikram.garhwal@amd.com> References: <20221015050750.4185-1-vikram.garhwal@amd.com> MIME-Version: 1.0 Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000B8EB:EE_|DM4PR12MB7504:EE_ X-MS-Office365-Filtering-Correlation-Id: cfcdd5c9-d184-4163-5c1c-08daae6b5208 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17; 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envelope-from=vikram.garhwal@amd.com; helo=NAM10-BN7-obe.outbound.protection.outlook.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, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-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" From: Stefano Stabellini On ARM it is possible to have a functioning xenpv machine with only the PV backends and no IOREQ server. If the IOREQ server creation fails continue to the PV backends initialization. Signed-off-by: Stefano Stabellini --- hw/xen/xen-hvm-common.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/hw/xen/xen-hvm-common.c b/hw/xen/xen-hvm-common.c index f848f9e625..7bccf595fc 100644 --- a/hw/xen/xen-hvm-common.c +++ b/hw/xen/xen-hvm-common.c @@ -777,7 +777,11 @@ void xen_register_ioreq(XenIOState *state, unsigned int max_cpus, goto err; } - xen_create_ioreq_server(xen_domid, &state->ioservid); + rc = xen_create_ioreq_server(xen_domid, &state->ioservid); + if (rc) { + DPRINTF("xen: failed to create ioreq server\n"); + goto no_ioreq; + } state->exit.notify = xen_exit_notifier; qemu_add_exit_notifier(&state->exit); @@ -842,6 +846,7 @@ void xen_register_ioreq(XenIOState *state, unsigned int max_cpus, QLIST_INIT(&state->dev_list); device_listener_register(&state->device_listener); +no_ioreq: xen_bus_init(); /* Initialize backend core & drivers */ -- 2.17.0