{"id":1839909,"url":"http://patchwork.ozlabs.org/api/patches/1839909/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20230926185738.277351-12-david@redhat.com/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/projects/14/?format=json","name":"QEMU Development","link_name":"qemu-devel","list_id":"qemu-devel.nongnu.org","list_email":"qemu-devel@nongnu.org","web_url":"","scm_url":"","webscm_url":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20230926185738.277351-12-david@redhat.com>","list_archive_url":null,"date":"2023-09-26T18:57:31","name":"[v4,11/18] vhost: Add vhost_get_max_memslots()","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"3dc2bc91af744aa934095bf4af7f0199f2fa2c97","submitter":{"id":70402,"url":"http://patchwork.ozlabs.org/api/people/70402/?format=json","name":"David Hildenbrand","email":"david@redhat.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20230926185738.277351-12-david@redhat.com/mbox/","series":[{"id":374991,"url":"http://patchwork.ozlabs.org/api/series/374991/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=374991","date":"2023-09-26T18:57:23","name":"virtio-mem: Expose device memory through multiple memslots","version":4,"mbox":"http://patchwork.ozlabs.org/series/374991/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/1839909/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/1839909/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256\n header.s=mimecast20190719 header.b=f5Vqy41o;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; helo=lists.gnu.org;\n envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n receiver=patchwork.ozlabs.org)"],"Received":["from lists.gnu.org (lists.gnu.org [209.51.188.17])\n\t(using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4Rw8Fp1dNzz1ynX\n\tfor ; Wed, 27 Sep 2023 05:00:30 +1000 (AEST)","from localhost ([::1] helo=lists1p.gnu.org)\n\tby lists.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from )\n\tid 1qlDHl-0001Jz-7J; Tue, 26 Sep 2023 14:59:53 -0400","from eggs.gnu.org ([2001:470:142:3::10])\n by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from ) id 1qlDHU-00014Y-7P\n for qemu-devel@nongnu.org; Tue, 26 Sep 2023 14:59:38 -0400","from us-smtp-delivery-124.mimecast.com ([170.10.133.124])\n by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from ) id 1qlDHS-0003BZ-Jf\n for qemu-devel@nongnu.org; Tue, 26 Sep 2023 14:59:35 -0400","from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com\n [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS\n (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id\n us-mta-326-akunlqBOMquWrlqJztU1Ug-1; Tue, 26 Sep 2023 14:59:29 -0400","from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com\n [10.11.54.4])\n (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))\n (No client certificate requested)\n by mimecast-mx02.redhat.com (Postfix) with ESMTPS id C3557800962;\n Tue, 26 Sep 2023 18:59:28 +0000 (UTC)","from t14s.fritz.box (unknown [10.39.192.33])\n by smtp.corp.redhat.com (Postfix) with ESMTP id F33B92026D4B;\n Tue, 26 Sep 2023 18:59:22 +0000 (UTC)"],"DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com;\n s=mimecast20190719; t=1695754773;\n h=from:from:reply-to:subject:subject:date:date:message-id:message-id:\n to:to:cc:cc:mime-version:mime-version:\n content-transfer-encoding:content-transfer-encoding:\n in-reply-to:in-reply-to:references:references;\n bh=lIfRMUCd48IhDe7JraPd1zdi82ZXxhpWgPA7X+aEIzE=;\n b=f5Vqy41ojbpvr5OOl3FJD4gOi+oqOvP8PWpNcIbpfPRkB1uamgnjbnhDgEg2KhXJAdBogE\n BvGv1xus66oyOMt/80sqCAVMHZCOyQkPvluNtazRwmdcThSrmWvHkxVgLC2HR7GMzPIArg\n yB1uzzIJ7qjH6FfgPRcKtgD3Hqjf1v0=","X-MC-Unique":"akunlqBOMquWrlqJztU1Ug-1","From":"David Hildenbrand ","To":"qemu-devel@nongnu.org","Cc":"David Hildenbrand , Paolo Bonzini ,\n Igor Mammedov ,\n Xiao Guangrong ,\n \"Michael S. Tsirkin\" , Peter Xu ,\n\t=?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= ,\n Eduardo Habkost ,\n Marcel Apfelbaum ,\n Yanan Wang , Michal Privoznik ,\n\t=?utf-8?q?Daniel_P_=2E_Berrang=C3=A9?= ,\n Gavin Shan , Alex Williamson ,\n Stefan Hajnoczi ,\n \"Maciej S . Szmigiero\" , kvm@vger.kernel.org,\n \"Maciej S . Szmigiero\" ","Subject":"[PATCH v4 11/18] vhost: Add vhost_get_max_memslots()","Date":"Tue, 26 Sep 2023 20:57:31 +0200","Message-ID":"<20230926185738.277351-12-david@redhat.com>","In-Reply-To":"<20230926185738.277351-1-david@redhat.com>","References":"<20230926185738.277351-1-david@redhat.com>","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","X-Scanned-By":"MIMEDefang 3.1 on 10.11.54.4","Received-SPF":"pass client-ip=170.10.133.124; envelope-from=david@redhat.com;\n 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,\n DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001,\n 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":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org"},"content":"Let's add vhost_get_max_memslots().\n\nReviewed-by: Maciej S. Szmigiero \nSigned-off-by: David Hildenbrand \n---\n hw/virtio/vhost-stub.c | 5 +++++\n hw/virtio/vhost.c | 11 +++++++++++\n include/hw/virtio/vhost.h | 1 +\n 3 files changed, 17 insertions(+)","diff":"diff --git a/hw/virtio/vhost-stub.c b/hw/virtio/vhost-stub.c\nindex d53dd9d288..52d42adab2 100644\n--- a/hw/virtio/vhost-stub.c\n+++ b/hw/virtio/vhost-stub.c\n@@ -2,6 +2,11 @@\n #include \"hw/virtio/vhost.h\"\n #include \"hw/virtio/vhost-user.h\"\n \n+unsigned int vhost_get_max_memslots(void)\n+{\n+ return UINT_MAX;\n+}\n+\n unsigned int vhost_get_free_memslots(void)\n {\n return UINT_MAX;\ndiff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c\nindex f7e1ac12a8..ee193b07c7 100644\n--- a/hw/virtio/vhost.c\n+++ b/hw/virtio/vhost.c\n@@ -55,6 +55,17 @@ static unsigned int used_shared_memslots;\n static QLIST_HEAD(, vhost_dev) vhost_devices =\n QLIST_HEAD_INITIALIZER(vhost_devices);\n \n+unsigned int vhost_get_max_memslots(void)\n+{\n+ unsigned int max = UINT_MAX;\n+ struct vhost_dev *hdev;\n+\n+ QLIST_FOREACH(hdev, &vhost_devices, entry) {\n+ max = MIN(max, hdev->vhost_ops->vhost_backend_memslots_limit(hdev));\n+ }\n+ return max;\n+}\n+\n unsigned int vhost_get_free_memslots(void)\n {\n unsigned int free = UINT_MAX;\ndiff --git a/include/hw/virtio/vhost.h b/include/hw/virtio/vhost.h\nindex 603bf834be..c7e5467693 100644\n--- a/include/hw/virtio/vhost.h\n+++ b/include/hw/virtio/vhost.h\n@@ -315,6 +315,7 @@ uint64_t vhost_get_features(struct vhost_dev *hdev, const int *feature_bits,\n */\n void vhost_ack_features(struct vhost_dev *hdev, const int *feature_bits,\n uint64_t features);\n+unsigned int vhost_get_max_memslots(void);\n unsigned int vhost_get_free_memslots(void);\n \n int vhost_net_set_backend(struct vhost_dev *hdev,\n","prefixes":["v4","11/18"]}