From nobody Sat Feb 7 10:08:00 2026 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (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 BB3C136CE11 for ; Mon, 19 Jan 2026 14:33:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768833221; cv=none; b=XeQ/sL0R6yfcjg+jUV7ohmLSkJyucEwwVY3Yup+ocXI52HBbhYZWIGViJItAEVXUtUtpTKiyWbpajArhodzrxYuFoQWLkHO+OPUxeHi0kOHIruuiIfu80JDufTVfx6Gu4mhXrkXE9CSBBOnuMyrJdVph5dzoqqo6y1xXnBLmnmo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768833221; c=relaxed/simple; bh=RTbGQMeS3TGwfkL0TUsU4PKOT1MwFgKm80XeeFGh0Xc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=WHcO+ETsJDmkR8LFkpYmQ4WHgR5C1VtcFrxLCni7+dIXDv+zLihDh1Fay0vuE4X6Z3C/j2vd0q30YgS7UJhFXttX4cy+A488isZMd0lJGSFzIaIdrEYOBnP2ud3mZwr8b1vuUNquEpHIiSLseFFzTIzKTQDXDU9qIRj0Njc6EEA= 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=itZSwCHI; arc=none smtp.client-ip=170.10.129.124 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="itZSwCHI" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1768833219; 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=t45TFxqr8WLK9tsMFvmjqb5HYGHWI8QhdKDpDAmNJlY=; b=itZSwCHI5BBugLSNkb/VWViPqBGl7BH0QtjAN5R7OUrngwE4o5hfcnb6VGOC+50JIpXW7n B2pTFDzNG24AuQ4dWOCoko3rnDJihAswSiDxnCJ+79VgDx8sByM9dzJQVlkMt+OypK0IxW NRdxcG4AkhRIoL5lcPANPUg7h8lA45k= Received: from mx-prod-mc-06.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-451-F4Rw9Rv5O_WG3uemhIEpRQ-1; Mon, 19 Jan 2026 09:33:37 -0500 X-MC-Unique: F4Rw9Rv5O_WG3uemhIEpRQ-1 X-Mimecast-MFC-AGG-ID: F4Rw9Rv5O_WG3uemhIEpRQ_1768833216 Received: from mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.111]) (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-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 63BC7180060F; Mon, 19 Jan 2026 14:33:36 +0000 (UTC) Received: from fedora.redhat.com (unknown [10.44.33.172]) by mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id EA9B31800577; Mon, 19 Jan 2026 14:33:32 +0000 (UTC) From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= To: "Michael S . Tsirkin " Cc: virtualization@lists.linux.dev, Yongji Xie , Xuan Zhuo , Maxime Coquelin , Stefano Garzarella , jasowang@redhat.com, =?UTF-8?q?Eugenio=20P=C3=A9rez?= , Laurent Vivier , Cindy Lu , linux-kernel@vger.kernel.org Subject: [PATCH v15 06/13] vhost: forbid change vq groups ASID if DRIVER_OK is set Date: Mon, 19 Jan 2026 15:32:59 +0100 Message-ID: <20260119143306.1818855-7-eperezma@redhat.com> In-Reply-To: <20260119143306.1818855-1-eperezma@redhat.com> References: <20260119143306.1818855-1-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 3.4.1 on 10.30.177.111 Only vdpa_sim support it. Forbid this behaviour as there is no use for it right now, we can always enable it in the future with a feature flag. Acked-by: Jason Wang Signed-off-by: Eugenio P=C3=A9rez --- v12: Fix typo in patch message (MST). --- 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