From patchwork Tue Jan 2 12:32:09 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?C=C3=A9dric_Le_Goater?= X-Patchwork-Id: 1881584 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4T4C1y4MfQz23dN for ; Tue, 2 Jan 2024 23:33:26 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rKdwg-0003Kr-Kb; Tue, 02 Jan 2024 07:32:34 -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 1rKdwe-0003KG-Rb for qemu-devel@nongnu.org; Tue, 02 Jan 2024 07:32:32 -0500 Received: from mail.ozlabs.org ([2404:9400:2221:ea00::3] helo=gandalf.ozlabs.org) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rKdwb-0006Pf-K5 for qemu-devel@nongnu.org; Tue, 02 Jan 2024 07:32:32 -0500 Received: from gandalf.ozlabs.org (gandalf.ozlabs.org [150.107.74.76]) by gandalf.ozlabs.org (Postfix) with ESMTP id 4T4C0h3vY8z4x5h; Tue, 2 Jan 2024 23:32:20 +1100 (AEDT) Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mail.ozlabs.org (Postfix) with ESMTPSA id 4T4C0f5TrWz4x2P; Tue, 2 Jan 2024 23:32:18 +1100 (AEDT) From: =?utf-8?q?C=C3=A9dric_Le_Goater?= To: qemu-devel@nongnu.org Cc: Yi Liu , Eric Auger , Zhenzhong Duan , =?utf-8?q?C=C3=A9dric_Le_Goater?= Subject: [PATCH 1/2] backends/iommufd: Remove check on number of backend users Date: Tue, 2 Jan 2024 13:32:09 +0100 Message-ID: <20240102123210.1184293-2-clg@redhat.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240102123210.1184293-1-clg@redhat.com> References: <20240102123210.1184293-1-clg@redhat.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2404:9400:2221:ea00::3; envelope-from=SRS0=sWZB=IM=redhat.com=clg@ozlabs.org; helo=gandalf.ozlabs.org X-Spam_score_int: -39 X-Spam_score: -4.0 X-Spam_bar: ---- X-Spam_report: (-4.0 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.249, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_PASS=-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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org QOM already has a ref count on objects and it will assert much earlier, when INT_MAX is reached. Signed-off-by: Cédric Le Goater Reviewed-by: Zhenzhong Duan --- backends/iommufd.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/backends/iommufd.c b/backends/iommufd.c index ba58a0eb0d0ba9aae625c987eb728547543dba66..393c0d9a3719e3de1a6b51a8ff2e75e184badc82 100644 --- a/backends/iommufd.c +++ b/backends/iommufd.c @@ -80,11 +80,6 @@ int iommufd_backend_connect(IOMMUFDBackend *be, Error **errp) int fd, ret = 0; qemu_mutex_lock(&be->lock); - if (be->users == UINT32_MAX) { - error_setg(errp, "too many connections"); - ret = -E2BIG; - goto out; - } if (be->owned && !be->users) { fd = qemu_open_old("/dev/iommu", O_RDWR); if (fd < 0) {