From mboxrd@z Thu Jan 1 00:00:00 1970 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 1D69DC4332F for ; Thu, 13 Oct 2022 19:11:04 +0000 (UTC) Received: from localhost ([::1]:38616 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oj3bj-0007RP-52 for qemu-devel@archiver.kernel.org; Thu, 13 Oct 2022 15:11:03 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:40406) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oj3R0-0006ev-J6 for qemu-devel@nongnu.org; Thu, 13 Oct 2022 14:59:58 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]:54728) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oj3Qx-00048h-KE for qemu-devel@nongnu.org; Thu, 13 Oct 2022 14:59:58 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1665687594; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=LO1Yk9Zyzrv9MQU42UWrwS5AGoOuZeWvHnsE7ewd4ko=; b=Y8dHOr5gJQTwSRRPSKLQDU/uAu5+v1I8OSHg4rwZolhNfzEwLyq/C6OHgZFDSh78uQNq/x tgslrbunxwGHz9V3FSuNphf/e2F6VsQmN5DNc4j2FO7z0eBVxHiPbFQ2UnI8blE/ccrxnJ MQpF/0G1V9FllY4Lxllb+cxBKxRz2Uk= Received: from mimecast-mx02.redhat.com (mx3-rdu2.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-649-JGyezIxpMXmQSgKgyZWChg-1; Thu, 13 Oct 2022 14:59:51 -0400 X-MC-Unique: JGyezIxpMXmQSgKgyZWChg-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.rdu2.redhat.com [10.11.54.7]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 5CED7382C967; Thu, 13 Oct 2022 18:59:50 +0000 (UTC) Received: from localhost (unknown [10.39.194.71]) by smtp.corp.redhat.com (Postfix) with ESMTP id B74D01410F38; Thu, 13 Oct 2022 18:59:49 +0000 (UTC) From: Stefan Hajnoczi To: qemu-devel@nongnu.org Cc: Fam Zheng , Markus Armbruster , Stefan Hajnoczi , Laurent Vivier , Marcel Apfelbaum , "Michael S. Tsirkin" , Wen Congyang , Kevin Wolf , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Richard Henderson , David Hildenbrand , Hanna Reitz , Xie Changlong , Eduardo Habkost , qemu-block@nongnu.org, Eric Blake , John Snow , afaria@redhat.com, Jeff Cody , Yanan Wang , Paolo Bonzini , Raphael Norwitz , sgarzare@redhat.com, integration@gluster.org, Peter Xu , "Richard W.M. Jones" , Thomas Huth , Vladimir Sementsov-Ogievskiy , "Denis V. Lunev" Subject: [PATCH v7 11/13] stubs: add qemu_ram_block_from_host() and qemu_ram_get_fd() Date: Thu, 13 Oct 2022 14:59:06 -0400 Message-Id: <20221013185908.1297568-12-stefanha@redhat.com> In-Reply-To: <20221013185908.1297568-1-stefanha@redhat.com> References: <20221013185908.1297568-1-stefanha@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.1 on 10.11.54.7 Received-SPF: pass client-ip=170.10.129.124; envelope-from=stefanha@redhat.com; helo=us-smtp-delivery-124.mimecast.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, 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, SPF_HELO_NONE=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" The blkio block driver will need to look up the file descriptor for a given pointer. This is possible in softmmu builds where the RAMBlock API is available for querying guest RAM. Add stubs so tools like qemu-img that link the block layer still build successfully. In this case there is no guest RAM but that is fine. Bounce buffers and their file descriptors will be allocated with libblkio's blkio_alloc_mem_region() so we won't rely on QEMU's qemu_ram_get_fd() in that case. Signed-off-by: Stefan Hajnoczi --- stubs/physmem.c | 13 +++++++++++++ stubs/meson.build | 1 + 2 files changed, 14 insertions(+) create mode 100644 stubs/physmem.c diff --git a/stubs/physmem.c b/stubs/physmem.c new file mode 100644 index 0000000000..1fc5f2df29 --- /dev/null +++ b/stubs/physmem.c @@ -0,0 +1,13 @@ +#include "qemu/osdep.h" +#include "exec/cpu-common.h" + +RAMBlock *qemu_ram_block_from_host(void *ptr, bool round_offset, + ram_addr_t *offset) +{ + return NULL; +} + +int qemu_ram_get_fd(RAMBlock *rb) +{ + return -1; +} diff --git a/stubs/meson.build b/stubs/meson.build index d8f3fd5c44..4314161f5f 100644 --- a/stubs/meson.build +++ b/stubs/meson.build @@ -29,6 +29,7 @@ stub_ss.add(files('migr-blocker.c')) stub_ss.add(files('module-opts.c')) stub_ss.add(files('monitor.c')) stub_ss.add(files('monitor-core.c')) +stub_ss.add(files('physmem.c')) stub_ss.add(files('qemu-timer-notify-cb.c')) stub_ss.add(files('qmp_memory_device.c')) stub_ss.add(files('qmp-command-available.c')) -- 2.37.3