From patchwork Thu Sep 28 13:19:39 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 1840819 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=gt3lBivA; dkim-atps=neutral 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 4RxDkG30mQz1yp0 for ; Thu, 28 Sep 2023 23:25:26 +1000 (AEST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qlqwp-0003gx-G0; Thu, 28 Sep 2023 09:20:55 -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 1qlqwO-0003Pz-UW for qemu-devel@nongnu.org; Thu, 28 Sep 2023 09:20:29 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qlqwL-00087o-9Q for qemu-devel@nongnu.org; Thu, 28 Sep 2023 09:20:28 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1695907224; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=yWxxOr88GmOzOaZGiZyjQenriNwOxYe0jtgr8xtVOEE=; b=gt3lBivAmHcDtcioAjzm7XoBcoYGKOU1jBYEZXNfTmjamPBrYh7f7MHCQef71gIvoZZyRU whbEAquJUPa5Pq9IY+JTgk0+qkMLFVUPfDMe+96vGwLO8pttDtgMf+ayMN1iuFebItI3Hp 6zvg4RXjzbAslqPCcVIayEX8rLt1CQg= Received: from mimecast-mx02.redhat.com (mx-ext.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-120-wLXKOnWIN7SioNk0kq6K7A-1; Thu, 28 Sep 2023 09:20:22 -0400 X-MC-Unique: wLXKOnWIN7SioNk0kq6K7A-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 3CC91280A9C3; Thu, 28 Sep 2023 13:20:22 +0000 (UTC) Received: from blackfin.pond.sub.org (unknown [10.39.192.25]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 1A58510F1BE9; Thu, 28 Sep 2023 13:20:22 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id E698E21E6915; Thu, 28 Sep 2023 15:20:19 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Cc: quintela@redhat.com, peterx@redhat.com, leobras@redhat.com, farosas@suse.de, lizhijian@fujitsu.com, eblake@redhat.com Subject: [PATCH v2 13/53] migration/rdma: Drop qemu_rdma_search_ram_block() error handling Date: Thu, 28 Sep 2023 15:19:39 +0200 Message-ID: <20230928132019.2544702-14-armbru@redhat.com> In-Reply-To: <20230928132019.2544702-1-armbru@redhat.com> References: <20230928132019.2544702-1-armbru@redhat.com> MIME-Version: 1.0 Content-type: text/plain X-Scanned-By: MIMEDefang 3.1 on 10.11.54.3 Received-SPF: pass client-ip=170.10.133.124; envelope-from=armbru@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: 12 X-Spam_score: 1.2 X-Spam_bar: + X-Spam_report: (1.2 / 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_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_SBL_CSS=3.335, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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 qemu_rdma_search_ram_block() can't fail. Return void, and drop the unreachable error handling. Signed-off-by: Markus Armbruster Reviewed-by: Li Zhijian Reviewed-by: Juan Quintela --- migration/rdma.c | 24 ++++++++---------------- 1 file changed, 8 insertions(+), 16 deletions(-) diff --git a/migration/rdma.c b/migration/rdma.c index f2f811ace2..7bea4d3947 100644 --- a/migration/rdma.c +++ b/migration/rdma.c @@ -1231,15 +1231,13 @@ static int qemu_rdma_reg_whole_ram_blocks(RDMAContext *rdma) * * Once the block is found, also identify which 'chunk' within that * block that the page belongs to. - * - * This search cannot fail or the migration will fail. */ -static int qemu_rdma_search_ram_block(RDMAContext *rdma, - uintptr_t block_offset, - uint64_t offset, - uint64_t length, - uint64_t *block_index, - uint64_t *chunk_index) +static void qemu_rdma_search_ram_block(RDMAContext *rdma, + uintptr_t block_offset, + uint64_t offset, + uint64_t length, + uint64_t *block_index, + uint64_t *chunk_index) { uint64_t current_addr = block_offset + offset; RDMALocalBlock *block = g_hash_table_lookup(rdma->blockmap, @@ -1251,8 +1249,6 @@ static int qemu_rdma_search_ram_block(RDMAContext *rdma, *block_index = block->index; *chunk_index = ram_chunk_index(block->local_host_addr, block->local_host_addr + (current_addr - block->offset)); - - return 0; } /* @@ -2321,12 +2317,8 @@ static int qemu_rdma_write(QEMUFile *f, RDMAContext *rdma, rdma->current_length = 0; rdma->current_addr = current_addr; - ret = qemu_rdma_search_ram_block(rdma, block_offset, - offset, len, &index, &chunk); - if (ret) { - error_report("ram block search failed"); - return ret; - } + qemu_rdma_search_ram_block(rdma, block_offset, + offset, len, &index, &chunk); rdma->current_index = index; rdma->current_chunk = chunk; }