From nobody Sun Feb 8 10:48:49 2026 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 65F19364040 for ; Fri, 9 Jan 2026 15:25:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767972308; cv=none; b=tglrGKgWI+xC/mZTfOZhbiHBjU35qrwHyie5DbcRg/LItvv1Z2pUZ/4fXCu58L5eLA0ZrwsRcHG/0mwp1NMElvjbY86elS6Lut5mRdl0rBS6Av+FWLe59oDEOMlyZwEv6hwaN6q9EgdpNA9qNVnZoSJcfc26ClEUTHaeURZ6O3Y= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767972308; c=relaxed/simple; bh=YThuG0JsB01OnDevlOWp+Tu62J3f3NWsb/0cacuOvGI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=kHRCruf5cjeXSWHUr7bMMENMV/LgOA8EoaW7sJYCT/XoSUhp7sPH8MmWbKVyr7aoG0ZKUlOcVckLJ6KNz55VKEo6Jetjo8aY6gKqi7b0lt5p6912OT3Sz6yrfuZQYoy3W9RNCIf+53Yxo7CISdGLT9kKX9NOpn4GofO0cfAFmsY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=CRpo6yL+; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="CRpo6yL+" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1767972306; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=zQwTOq0UWbi2hcfKjCFHsey9lhPdgHZ+VxM4pEXg1vs=; b=CRpo6yL+suHgiZObIG2YsAkKER+DVOFfkyzaWEy0yHP+oMfjLUVNvNoRQ60suMjUNurAjI gvt4OybHxelZlOfA63GNjnkAx+spETl1nWk4PQrTb0CIqT7/IS/0YZVT3I1JHijehFsXDZ UUQSVE4sD6L19cDJx6NiIkE3u8Cx00g= Received: from mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-30-cHBlskl_MWqWc8kKnyiaBw-1; Fri, 09 Jan 2026 10:25:05 -0500 X-MC-Unique: cHBlskl_MWqWc8kKnyiaBw-1 X-Mimecast-MFC-AGG-ID: cHBlskl_MWqWc8kKnyiaBw_1767972303 Received: from mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.17]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id C737F18002C8; Fri, 9 Jan 2026 15:25:03 +0000 (UTC) Received: from fedora.redhat.com (unknown [10.44.32.96]) by mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 52DED1954199; Fri, 9 Jan 2026 15:24:59 +0000 (UTC) From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= To: "Michael S . Tsirkin " Cc: linux-kernel@vger.kernel.org, virtualization@lists.linux.dev, Maxime Coquelin , Laurent Vivier , Cindy Lu , jasowang@redhat.com, Xuan Zhuo , Stefano Garzarella , Yongji Xie , =?UTF-8?q?Eugenio=20P=C3=A9rez?= Subject: [PATCH v11 06/12] vhost: forbid change vq groups ASID if DRIVER_OK is set Date: Fri, 9 Jan 2026 16:24:24 +0100 Message-ID: <20260109152430.512923-7-eperezma@redhat.com> In-Reply-To: <20260109152430.512923-1-eperezma@redhat.com> References: <20260109152430.512923-1-eperezma@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 Only vdpa_sim support it. Forbid this behavious as there is no use for it right now, we can always enable it in the future with a feature flag. Signed-off-by: Eugenio P=C3=A9rez --- drivers/vhost/vdpa.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c index 9d25b735b43d..3f0184d42075 100644 --- a/drivers/vhost/vdpa.c +++ b/drivers/vhost/vdpa.c @@ -682,6 +682,8 @@ static long vhost_vdpa_vring_ioctl(struct vhost_vdpa *v= , unsigned int cmd, return -EFAULT; if (idx >=3D vdpa->ngroups || s.num >=3D vdpa->nas) return -EINVAL; + if (ops->get_status(vdpa) & VIRTIO_CONFIG_S_DRIVER_OK) + return -EBUSY; if (!ops->set_group_asid) return -EOPNOTSUPP; return ops->set_group_asid(vdpa, idx, s.num); --=20 2.52.0