From patchwork Tue Sep 6 07:31:09 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniil Tatianin X-Patchwork-Id: 12966956 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 7B29CECAAA1 for ; Tue, 6 Sep 2022 07:39:18 +0000 (UTC) Received: from localhost ([::1]:50420 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oVTAz-00021p-HY for qemu-devel@archiver.kernel.org; Tue, 06 Sep 2022 03:39:17 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:43356) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oVT3Y-0003Iq-MM; Tue, 06 Sep 2022 03:31:36 -0400 Received: from forwardcorp1p.mail.yandex.net ([77.88.29.217]:49704) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oVT3U-0002xU-6u; Tue, 06 Sep 2022 03:31:35 -0400 Received: from vla1-81430ab5870b.qloud-c.yandex.net (vla1-81430ab5870b.qloud-c.yandex.net [IPv6:2a02:6b8:c0d:35a1:0:640:8143:ab5]) by forwardcorp1p.mail.yandex.net (Yandex) with ESMTP id E4A5C2E0B44; Tue, 6 Sep 2022 10:31:19 +0300 (MSK) Received: from d-tatianin-nix.yandex.net (unknown [2a02:6b8:0:419:d8d0:8d85:2aad:ab5b]) by vla1-81430ab5870b.qloud-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id WefwVQnsrp-VJXiuDjk; Tue, 06 Sep 2022 10:31:19 +0300 (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (Client certificate not present) Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1662449479; bh=CSW1A7UJsUY4+uHeXma7o5wMMCuBXH41Ny7gH8yaeGs=; h=Message-Id:Date:In-Reply-To:Cc:Subject:References:To:From; b=uB0iiSMGmjpA2xEzve//WUrUGhmK+w6/ewUSvRR9Sh7V8ZLNcrh47pSOoOxiKr/8v SBgCRk1s/v72Q7+wD0crQwC7YFbNjnTiPfOnNILr5URBK2992N+iDoYu6pnb4/SNg/ 3ErAdDZqsvTQTOO2sc5GdpXggKdOQXBqh/4ok47s= Authentication-Results: vla1-81430ab5870b.qloud-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Daniil Tatianin To: qemu-devel@nongnu.org Cc: yc-core@yandex-team.ru, mst@redhat.com, stefanha@redhat.com, raphael.norwitz@nutanix.com, kwolf@redhat.com, qemu-block@nongnu.org, jasowang@redhat.com, d-tatianin@yandex-team.ru Subject: [PATCH v3 3/5] vhost-user-blk: make it possible to disable write-zeroes/discard Date: Tue, 6 Sep 2022 10:31:09 +0300 Message-Id: <20220906073111.353245-4-d-tatianin@yandex-team.ru> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220906073111.353245-1-d-tatianin@yandex-team.ru> References: <20220906073111.353245-1-d-tatianin@yandex-team.ru> MIME-Version: 1.0 Received-SPF: pass client-ip=77.88.29.217; envelope-from=d-tatianin@yandex-team.ru; helo=forwardcorp1p.mail.yandex.net 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, 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, 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 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" It is useful to have the ability to disable these features for compatibility with older VMs that don't have these implemented. Signed-off-by: Daniil Tatianin Reviewed-by: Raphael Norwitz --- hw/block/vhost-user-blk.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/hw/block/vhost-user-blk.c b/hw/block/vhost-user-blk.c index 9117222456..4c9727e08c 100644 --- a/hw/block/vhost-user-blk.c +++ b/hw/block/vhost-user-blk.c @@ -259,8 +259,6 @@ static uint64_t vhost_user_blk_get_features(VirtIODevice *vdev, virtio_add_feature(&features, VIRTIO_BLK_F_BLK_SIZE); virtio_add_feature(&features, VIRTIO_BLK_F_FLUSH); virtio_add_feature(&features, VIRTIO_BLK_F_RO); - virtio_add_feature(&features, VIRTIO_BLK_F_DISCARD); - virtio_add_feature(&features, VIRTIO_BLK_F_WRITE_ZEROES); if (s->config_wce) { virtio_add_feature(&features, VIRTIO_BLK_F_CONFIG_WCE); @@ -592,6 +590,10 @@ static Property vhost_user_blk_properties[] = { VHOST_USER_BLK_AUTO_NUM_QUEUES), DEFINE_PROP_UINT32("queue-size", VHostUserBlk, queue_size, 128), DEFINE_PROP_BIT("config-wce", VHostUserBlk, config_wce, 0, true), + DEFINE_PROP_BIT64("discard", VHostUserBlk, parent_obj.host_features, + VIRTIO_BLK_F_DISCARD, true), + DEFINE_PROP_BIT64("write-zeroes", VHostUserBlk, parent_obj.host_features, + VIRTIO_BLK_F_WRITE_ZEROES, true), DEFINE_PROP_END_OF_LIST(), };