From patchwork Fri Jun 9 17:07:47 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefano Stabellini X-Patchwork-Id: 13274219 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 87905C7EE29 for ; Fri, 9 Jun 2023 17:09:26 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1q7fan-0005kw-I7; Fri, 09 Jun 2023 13:08:05 -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 1q7fal-0005jV-KP for qemu-devel@nongnu.org; Fri, 09 Jun 2023 13:08:03 -0400 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1q7faj-00027V-V0 for qemu-devel@nongnu.org; Fri, 09 Jun 2023 13:08:03 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 2670865A39; Fri, 9 Jun 2023 17:08:01 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B0E6BC433EF; Fri, 9 Jun 2023 17:07:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1686330480; bh=xjHqKh3R+C3ngU8CU2fjYZhadsxs3PEQqbOqljCImVc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=olHqpb2Z3R6ZavPpFXG5iJp0WDwgO0zea3jogEZmL+O6XTxvUXA8VIXC9B9D+I/uR V52zyiX+0CdmuWZ6PzIeigZbbCkxJFHw8ExGgSYV7xpke2bqkAtTfpievGciabu4Vp q7vAy3fMUHtkG3xmjW5BaYbm6A5cRopHzc1qb2xS5AWuOtn+e38Knqvfc+2Lp+no79 7UilxD95yzacodwFu12gsinzo+IkkMdwoLVWI6r/DJFswQX4SYbFCQHGlmE4JlWfx0 oJ8vH/iAI5SuxTkfA3J3QUyVC+dwSTBRgzqCO2lCtzqaOpUWvr0FiaXUOeJj8lcjYW TfUfSY2lNUyNA== From: Stefano Stabellini To: peter.maydell@linaro.org Cc: sstabellini@kernel.org, qemu-devel@nongnu.org, vikram.garhwal@amd.com, richard.henderson@linaro.org, Stefano Stabellini , Paul Durrant Subject: [PULL v4 06/10] hw/xen/xen-hvm-common: skip ioreq creation on ioreq registration failure Date: Fri, 9 Jun 2023 10:07:47 -0700 Message-Id: <20230609170751.4059054-6-sstabellini@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 Received-SPF: pass client-ip=2604:1380:4641:c500::1; envelope-from=sstabellini@kernel.org; helo=dfw.source.kernel.org X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org 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. Also, moved the IOREQ registration and mapping subroutine to new function xen_do_ioreq_register(). Signed-off-by: Stefano Stabellini Signed-off-by: Vikram Garhwal Reviewed-by: Stefano Stabellini Reviewed-by: Paul Durrant --- hw/xen/xen-hvm-common.c | 57 +++++++++++++++++++++++++++-------------- 1 file changed, 38 insertions(+), 19 deletions(-) diff --git a/hw/xen/xen-hvm-common.c b/hw/xen/xen-hvm-common.c index a31b067404..cb82f4b83d 100644 --- a/hw/xen/xen-hvm-common.c +++ b/hw/xen/xen-hvm-common.c @@ -764,27 +764,12 @@ void xen_shutdown_fatal_error(const char *fmt, ...) qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_ERROR); } -void xen_register_ioreq(XenIOState *state, unsigned int max_cpus, - MemoryListener xen_memory_listener) +static void xen_do_ioreq_register(XenIOState *state, + unsigned int max_cpus, + MemoryListener xen_memory_listener) { int i, rc; - setup_xen_backend_ops(); - - state->xce_handle = qemu_xen_evtchn_open(); - if (state->xce_handle == NULL) { - perror("xen: event channel open"); - goto err; - } - - state->xenstore = xs_daemon_open(); - if (state->xenstore == NULL) { - perror("xen: xenstore open"); - goto err; - } - - xen_create_ioreq_server(xen_domid, &state->ioservid); - state->exit.notify = xen_exit_notifier; qemu_add_exit_notifier(&state->exit); @@ -849,12 +834,46 @@ void xen_register_ioreq(XenIOState *state, unsigned int max_cpus, QLIST_INIT(&state->dev_list); device_listener_register(&state->device_listener); + return; + +err: + error_report("xen hardware virtual machine initialisation failed"); + exit(1); +} + +void xen_register_ioreq(XenIOState *state, unsigned int max_cpus, + MemoryListener xen_memory_listener) +{ + int rc; + + setup_xen_backend_ops(); + + state->xce_handle = qemu_xen_evtchn_open(); + if (state->xce_handle == NULL) { + perror("xen: event channel open"); + goto err; + } + + state->xenstore = xs_daemon_open(); + if (state->xenstore == NULL) { + perror("xen: xenstore open"); + goto err; + } + + rc = xen_create_ioreq_server(xen_domid, &state->ioservid); + if (!rc) { + xen_do_ioreq_register(state, max_cpus, xen_memory_listener); + } else { + warn_report("xen: failed to create ioreq server"); + } + xen_bus_init(); xen_be_init(); return; + err: - error_report("xen hardware virtual machine initialisation failed"); + error_report("xen hardware virtual machine backend registration failed"); exit(1); }