From patchwork Wed Aug 24 09:18:35 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniil Tatianin X-Patchwork-Id: 12953096 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 EF009C00140 for ; Wed, 24 Aug 2022 09:36:32 +0000 (UTC) Received: from localhost ([::1]:43894 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oQmoJ-0004Wh-RP for qemu-devel@archiver.kernel.org; Wed, 24 Aug 2022 05:36:31 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:60518) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oQmhk-0000gC-RP; Wed, 24 Aug 2022 05:29:44 -0400 Received: from forwardcorp1p.mail.yandex.net ([77.88.29.217]:42358) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oQmhf-00083U-IV; Wed, 24 Aug 2022 05:29:44 -0400 Received: from sas1-c73b4b4f4b95.qloud-c.yandex.net (sas1-c73b4b4f4b95.qloud-c.yandex.net [IPv6:2a02:6b8:c08:12a9:0:640:c73b:4b4f]) by forwardcorp1p.mail.yandex.net (Yandex) with ESMTP id 224AA2E15BA; Wed, 24 Aug 2022 12:18:50 +0300 (MSK) Received: from d-tatianin-nix.yandex-team.ru (unknown [2a02:6b8:b081:b4bd::1:34]) by sas1-c73b4b4f4b95.qloud-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id YDoXMhagzp-ImOaTS2I; Wed, 24 Aug 2022 12:18:49 +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=1661332729; bh=s6OUV6tSLZUzS4tMAJMp6QEfm6lhaMjVOwAjGV1hW6g=; h=Message-Id:Date:In-Reply-To:Cc:Subject:References:To:From; b=K17FLd2PFBybNGmSghvHnyjgZkNE+6e5BADPLiEYIJrNdfn/YiiOZwvJK5ufOGIlJ LXy47q8ClLYiLPC3EYViYBsba0+lUk7h3d/FkyEpmEYIZ36soc1uJcicxq+jMpGUiF 1kZ+z/RsSm562DFHZwe5Hk7T6/yYfrCFn3T0Lb+s= Authentication-Results: sas1-c73b4b4f4b95.qloud-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Daniil Tatianin To: qemu-devel@nongnu.org Cc: mst@redhat.com, stefanha@redhat.com, raphael.norwitz@nutanix.com, kwolf@redhat.com, hreitz@redhat.com, qemu-block@nongnu.org, yc-core@yandex-team.ru, d-tatianin@yandex-team.ru Subject: [PATCH v1 3/5] vhost-user-blk: make it possible to disable write-zeroes/discard Date: Wed, 24 Aug 2022 12:18:35 +0300 Message-Id: <20220824091837.301708-4-d-tatianin@yandex-team.ru> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220824091837.301708-1-d-tatianin@yandex-team.ru> References: <20220824091837.301708-1-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 --- hw/block/vhost-user-blk.c | 8 ++++++-- include/hw/virtio/vhost-user-blk.h | 2 ++ 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/hw/block/vhost-user-blk.c b/hw/block/vhost-user-blk.c index 9117222456..e89164c358 100644 --- a/hw/block/vhost-user-blk.c +++ b/hw/block/vhost-user-blk.c @@ -251,6 +251,8 @@ static uint64_t vhost_user_blk_get_features(VirtIODevice *vdev, { VHostUserBlk *s = VHOST_USER_BLK(vdev); + features |= s->host_features; + /* Turn on pre-defined features */ virtio_add_feature(&features, VIRTIO_BLK_F_SIZE_MAX); virtio_add_feature(&features, VIRTIO_BLK_F_SEG_MAX); @@ -259,8 +261,6 @@ 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 +592,10 @@ 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, host_features, + VIRTIO_BLK_F_DISCARD, true), + DEFINE_PROP_BIT64("write-zeroes", VHostUserBlk, host_features, + VIRTIO_BLK_F_WRITE_ZEROES, true), DEFINE_PROP_END_OF_LIST(), }; diff --git a/include/hw/virtio/vhost-user-blk.h b/include/hw/virtio/vhost-user-blk.h index 7c91f15040..20573dd586 100644 --- a/include/hw/virtio/vhost-user-blk.h +++ b/include/hw/virtio/vhost-user-blk.h @@ -51,6 +51,8 @@ struct VHostUserBlk { bool connected; /* vhost_user_blk_start/vhost_user_blk_stop */ bool started_vu; + + uint64_t host_features; }; #endif