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 5FE4CC433F5 for ; Thu, 6 Oct 2022 21:44:04 +0000 (UTC) Received: from localhost ([::1]:39568 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ogYex-0008WL-Fh for qemu-devel@archiver.kernel.org; Thu, 06 Oct 2022 17:44:03 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:40008) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ogYWx-0003Ip-6G for qemu-devel@nongnu.org; Thu, 06 Oct 2022 17:35:49 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]:60220) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ogYWt-0006to-VF for qemu-devel@nongnu.org; Thu, 06 Oct 2022 17:35:46 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1665092142; 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=Eu5m59SrY5W6yM8bkNQPea/wCsowzF5YtQ1G0/0u1udCOrsGRKWgAiOVXb9C4z+otSdhzx bZWVNcuYadp6JbzWj/AUUWj720d1pwzBCMmRasEnKE0yR7gAdkVGQu8l/bRBzfiT/r+Tyh fXsczoTq0Znw0wAkuSfNiXqATVtbvxo= 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-471-xo-4woCxNDq_-zFSr4jMxw-1; Thu, 06 Oct 2022 17:35:40 -0400 X-MC-Unique: xo-4woCxNDq_-zFSr4jMxw-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.rdu2.redhat.com [10.11.54.8]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 1C6891C068C9; Thu, 6 Oct 2022 21:35:39 +0000 (UTC) Received: from localhost (unknown [10.39.193.119]) by smtp.corp.redhat.com (Postfix) with ESMTP id 5EF25C15BA4; Thu, 6 Oct 2022 21:35:38 +0000 (UTC) From: Stefan Hajnoczi To: qemu-devel@nongnu.org Cc: Yanan Wang , sgarzare@redhat.com, "Richard W.M. Jones" , Fam Zheng , Hanna Reitz , David Hildenbrand , integration@gluster.org, qemu-block@nongnu.org, Vladimir Sementsov-Ogievskiy , Paolo Bonzini , Kevin Wolf , afaria@redhat.com, Richard Henderson , Eric Blake , "Michael S. Tsirkin" , Thomas Huth , Xie Changlong , John Snow , Eduardo Habkost , Jeff Cody , Stefan Hajnoczi , "Denis V. Lunev" , Markus Armbruster , Laurent Vivier , Peter Xu , Raphael Norwitz , Marcel Apfelbaum , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Wen Congyang Subject: [PATCH v6 11/13] stubs: add qemu_ram_block_from_host() and qemu_ram_get_fd() Date: Thu, 6 Oct 2022 17:35:05 -0400 Message-Id: <20221006213507.645402-12-stefanha@redhat.com> In-Reply-To: <20221006213507.645402-1-stefanha@redhat.com> References: <20221006213507.645402-1-stefanha@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.1 on 10.11.54.8 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: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 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_LOW=-0.7, 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