From patchwork Fri Nov 3 17:16:41 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Cindy Lu X-Patchwork-Id: 13444799 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (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 81B901F92C for ; Fri, 3 Nov 2023 17:18:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="K+AJRNMW" Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 151F010CF for ; Fri, 3 Nov 2023 10:18:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1699031887; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=aCTB8Gg9xttEfEVtECz9fqwzez2GQHqNSW6hXp3Vsbk=; b=K+AJRNMWUq52CW31BiS0fG8SoJ0LMbani3aUuY2EeVU4lld6UT6sIEUj+2k8CRaz9T5gHQ spIrXHgPYxi9TNPCGqt0avgMWHEjojLnqSzZ6TFQ3rB+A9yqbQr2T4Fi/ghYrtKGrRJySd 06oljP2sEXWCfOiYfi4uxm6lKR12hr4= Received: from mimecast-mx02.redhat.com (mx-ext.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-161-HmhpnDUUNMKaWArsODPEXQ-1; Fri, 03 Nov 2023 13:18:02 -0400 X-MC-Unique: HmhpnDUUNMKaWArsODPEXQ-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (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 mimecast-mx02.redhat.com (Postfix) with ESMTPS id 902D33C16DDC; Fri, 3 Nov 2023 17:18:01 +0000 (UTC) Received: from server.redhat.com (unknown [10.72.112.41]) by smtp.corp.redhat.com (Postfix) with ESMTP id 63D381121309; Fri, 3 Nov 2023 17:17:58 +0000 (UTC) From: Cindy Lu To: lulu@redhat.com, jasowang@redhat.com, mst@redhat.com, yi.l.liu@intel.com, jgg@nvidia.com, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org Subject: [RFC v1 8/8] iommu: expose the function iommu_device_use_default_domain Date: Sat, 4 Nov 2023 01:16:41 +0800 Message-Id: <20231103171641.1703146-9-lulu@redhat.com> In-Reply-To: <20231103171641.1703146-1-lulu@redhat.com> References: <20231103171641.1703146-1-lulu@redhat.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.3 X-Patchwork-State: RFC Expose the function iommu_device_use_default_domain() and iommu_device_unuse_default_domain()， While vdpa bind the iommufd device and detach the iommu device, vdpa need to call the function iommu_device_unuse_default_domain() to release the owner Signed-off-by: Cindy Lu --- drivers/iommu/iommu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 3bfc56df4f78..987cbf8c9a87 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -3164,6 +3164,7 @@ int iommu_device_use_default_domain(struct device *dev) return ret; } +EXPORT_SYMBOL_GPL(iommu_device_use_default_domain); /** * iommu_device_unuse_default_domain() - Device driver stops handling device @@ -3187,6 +3188,7 @@ void iommu_device_unuse_default_domain(struct device *dev) mutex_unlock(&group->mutex); iommu_group_put(group); } +EXPORT_SYMBOL_GPL(iommu_device_unuse_default_domain); static int __iommu_group_alloc_blocking_domain(struct iommu_group *group) {