 <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
---
 include/linux/iommu.h                         |  3 ++-
 drivers/iommu/amd/iommu.c                     | 11 ++++----
 drivers/iommu/apple-dart.c                    |  9 ++++---
 .../arm/arm-smmu-v3/arm-smmu-v3-iommufd.c     |  5 ++--
 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c   | 24 +++++++++++-------
 drivers/iommu/arm/arm-smmu/arm-smmu.c         |  9 ++++---
 drivers/iommu/arm/arm-smmu/qcom_iommu.c       | 11 ++++----
 drivers/iommu/exynos-iommu.c                  |  8 +++---
 drivers/iommu/fsl_pamu_domain.c               | 12 ++++-----
 drivers/iommu/intel/iommu.c                   | 10 +++++---
 drivers/iommu/intel/nested.c                  |  2 +-
 drivers/iommu/iommu.c                         | 25 +++++++++++--------
 drivers/iommu/iommufd/selftest.c              |  2 +-
 drivers/iommu/ipmmu-vmsa.c                    | 10 ++++----
 drivers/iommu/msm_iommu.c                     | 11 ++++----
 drivers/iommu/mtk_iommu.c                     |  8 +++---
 drivers/iommu/mtk_iommu_v1.c                  |  7 ++++--
 drivers/iommu/omap-iommu.c                    | 12 ++++-----
 drivers/iommu/riscv/iommu.c                   |  9 ++++---
 drivers/iommu/rockchip-iommu.c                | 20 +++++++++++----
 drivers/iommu/s390-iommu.c                    |  9 ++++---
 drivers/iommu/sprd-iommu.c                    |  3 ++-
 drivers/iommu/sun50i-iommu.c                  |  8 +++---
 drivers/iommu/tegra-smmu.c                    | 10 ++++----
 drivers/iommu/virtio-iommu.c                  |  6 +++--
 25 files changed, 148 insertions(+), 96 deletions(-)

diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index c30d12e16473d..801b2bd9e8d49 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -751,7 +751,8 @@ struct iommu_ops {
  * @free: Release the domain after use.
  */
 struct iommu_domain_ops {
-	int (*attach_dev)(struct iommu_domain *domain, struct device *dev);
+	int (*attach_dev)(struct iommu_domain *domain, struct device *dev,
+			  struct iommu_domain *old);
 	int (*set_dev_pasid)(struct iommu_domain *domain, struct device *dev,
 			     ioasid_t pasid, struct iommu_domain *old);
 
diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c
index 6f4559eb5121a..e16ad510c8c8a 100644
--- a/drivers/iommu/amd/iommu.c
+++ b/drivers/iommu/amd/iommu.c
@@ -70,8 +70,8 @@ int amd_iommu_max_glx_val = -1;
  */
 DEFINE_IDA(pdom_ids);
 
-static int amd_iommu_attach_device(struct iommu_domain *dom,
-				   struct device *dev);
+static int amd_iommu_attach_device(struct iommu_domain *dom, struct device *dev,
+				   struct iommu_domain *old);
 
 static void set_dte_entry(struct amd_iommu *iommu,
 			  struct iommu_dev_data *dev_data);
@@ -2635,7 +2635,8 @@ void amd_iommu_domain_free(struct iommu_domain *dom)
 }
 
 static int blocked_domain_attach_device(struct iommu_domain *domain,
-					struct device *dev)
+					struct device *dev,
+					struct iommu_domain *old)
 {
 	struct iommu_dev_data *dev_data = dev_iommu_priv_get(dev);
 
@@ -2685,8 +2686,8 @@ void amd_iommu_init_identity_domain(void)
 	protection_domain_init(&identity_domain);
 }
 
-static int amd_iommu_attach_device(struct iommu_domain *dom,
-				   struct device *dev)
+static int amd_iommu_attach_device(struct iommu_domain *dom, struct device *dev,
+				   struct iommu_domain *old)
 {
 	struct iommu_dev_data *dev_data = dev_iommu_priv_get(dev);
 	struct protection_domain *domain = to_pdomain(dom);
diff --git a/drivers/iommu/apple-dart.c b/drivers/iommu/apple-dart.c
index 95a4e62b8f63c..b5848770ef482 100644
--- a/drivers/iommu/apple-dart.c
+++ b/drivers/iommu/apple-dart.c
@@ -672,7 +672,8 @@ static int apple_dart_domain_add_streams(struct apple_dart_domain *domain,
 }
 
 static int apple_dart_attach_dev_paging(struct iommu_domain *domain,
-					struct device *dev)
+					struct device *dev,
+					struct iommu_domain *old)
 {
 	int ret, i;
 	struct apple_dart_stream_map *stream_map;
@@ -693,7 +694,8 @@ static int apple_dart_attach_dev_paging(struct iommu_domain *domain,
 }
 
 static int apple_dart_attach_dev_identity(struct iommu_domain *domain,
-					  struct device *dev)
+					  struct device *dev,
+					  struct iommu_domain *old)
 {
 	struct apple_dart_master_cfg *cfg = dev_iommu_priv_get(dev);
 	struct apple_dart_stream_map *stream_map;
@@ -717,7 +719,8 @@ static struct iommu_domain apple_dart_identity_domain = {
 };
 
 static int apple_dart_attach_dev_blocked(struct iommu_domain *domain,
-					 struct device *dev)
+					 struct device *dev,
+					 struct iommu_domain *old)
 {
 	struct apple_dart_master_cfg *cfg = dev_iommu_priv_get(dev);
 	struct apple_dart_stream_map *stream_map;
diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-iommufd.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-iommufd.c
index 8cd8929bbfdf8..313201a616991 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-iommufd.c
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-iommufd.c
@@ -138,14 +138,15 @@ void arm_smmu_master_clear_vmaster(struct arm_smmu_master *master)
 }
 
 static int arm_smmu_attach_dev_nested(struct iommu_domain *domain,
-				      struct device *dev)
+				      struct device *dev,
+				      struct iommu_domain *old_domain)
 {
 	struct arm_smmu_nested_domain *nested_domain =
 		to_smmu_nested_domain(domain);
 	struct arm_smmu_master *master = dev_iommu_priv_get(dev);
 	struct arm_smmu_attach_state state = {
 		.master = master,
-		.old_domain = iommu_get_domain_for_dev(dev),
+		.old_domain = old_domain,
 		.ssid = IOMMU_NO_PASID,
 	};
 	struct arm_smmu_ste ste;
diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
index 2125ebfc9a70e..a33fbd12a0dd9 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
@@ -3002,7 +3002,8 @@ void arm_smmu_attach_commit(struct arm_smmu_attach_state *state)
 	master->ats_enabled = state->ats_enabled;
 }
 
-static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev)
+static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev,
+			       struct iommu_domain *old_domain)
 {
 	int ret = 0;
 	struct arm_smmu_ste target;
@@ -3010,7 +3011,7 @@ static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev)
 	struct arm_smmu_device *smmu;
 	struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain);
 	struct arm_smmu_attach_state state = {
-		.old_domain = iommu_get_domain_for_dev(dev),
+		.old_domain = old_domain,
 		.ssid = IOMMU_NO_PASID,
 	};
 	struct arm_smmu_master *master;
@@ -3186,7 +3187,7 @@ static int arm_smmu_blocking_set_dev_pasid(struct iommu_domain *new_domain,
 
 	/*
 	 * When the last user of the CD table goes away downgrade the STE back
-	 * to a non-cd_table one.
+	 * to a non-cd_table one, by re-attaching its sid_domain.
 	 */
 	if (!arm_smmu_ssids_in_use(&master->cd_table)) {
 		struct iommu_domain *sid_domain =
@@ -3194,12 +3195,14 @@ static int arm_smmu_blocking_set_dev_pasid(struct iommu_domain *new_domain,
 
 		if (sid_domain->type == IOMMU_DOMAIN_IDENTITY ||
 		    sid_domain->type == IOMMU_DOMAIN_BLOCKED)
-			sid_domain->ops->attach_dev(sid_domain, dev);
+			sid_domain->ops->attach_dev(sid_domain, dev,
+						    sid_domain);
 	}
 	return 0;
 }
 
 static void arm_smmu_attach_dev_ste(struct iommu_domain *domain,
+				    struct iommu_domain *old_domain,
 				    struct device *dev,
 				    struct arm_smmu_ste *ste,
 				    unsigned int s1dss)
@@ -3207,7 +3210,7 @@ static void arm_smmu_attach_dev_ste(struct iommu_domain *domain,
 	struct arm_smmu_master *master = dev_iommu_priv_get(dev);
 	struct arm_smmu_attach_state state = {
 		.master = master,
-		.old_domain = iommu_get_domain_for_dev(dev),
+		.old_domain = old_domain,
 		.ssid = IOMMU_NO_PASID,
 	};
 
@@ -3248,14 +3251,16 @@ static void arm_smmu_attach_dev_ste(struct iommu_domain *domain,
 }
 
 static int arm_smmu_attach_dev_identity(struct iommu_domain *domain,
-					struct device *dev)
+					struct device *dev,
+					struct iommu_domain *old_domain)
 {
 	struct arm_smmu_ste ste;
 	struct arm_smmu_master *master = dev_iommu_priv_get(dev);
 
 	arm_smmu_master_clear_vmaster(master);
 	arm_smmu_make_bypass_ste(master->smmu, &ste);
-	arm_smmu_attach_dev_ste(domain, dev, &ste, STRTAB_STE_1_S1DSS_BYPASS);
+	arm_smmu_attach_dev_ste(domain, old_domain, dev, &ste,
+				STRTAB_STE_1_S1DSS_BYPASS);
 	return 0;
 }
 
@@ -3269,14 +3274,15 @@ static struct iommu_domain arm_smmu_identity_domain = {
 };
 
 static int arm_smmu_attach_dev_blocked(struct iommu_domain *domain,
-					struct device *dev)
+				       struct device *dev,
+				       struct iommu_domain *old_domain)
 {
 	struct arm_smmu_ste ste;
 	struct arm_smmu_master *master = dev_iommu_priv_get(dev);
 
 	arm_smmu_master_clear_vmaster(master);
 	arm_smmu_make_abort_ste(&ste);
-	arm_smmu_attach_dev_ste(domain, dev, &ste,
+	arm_smmu_attach_dev_ste(domain, old_domain, dev, &ste,
 				STRTAB_STE_1_S1DSS_TERMINATE);
 	return 0;
 }
diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c
index 4ced4b5bee4df..5e690cf85ec96 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu.c
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c
@@ -1165,7 +1165,8 @@ static void arm_smmu_master_install_s2crs(struct arm_smmu_master_cfg *cfg,
 	}
 }
 
-static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev)
+static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev,
+			       struct iommu_domain *old)
 {
 	struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain);
 	struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
@@ -1234,7 +1235,8 @@ static int arm_smmu_attach_dev_type(struct device *dev,
 }
 
 static int arm_smmu_attach_dev_identity(struct iommu_domain *domain,
-					struct device *dev)
+					struct device *dev,
+					struct iommu_domain *old)
 {
 	return arm_smmu_attach_dev_type(dev, S2CR_TYPE_BYPASS);
 }
@@ -1249,7 +1251,8 @@ static struct iommu_domain arm_smmu_identity_domain = {
 };
 
 static int arm_smmu_attach_dev_blocked(struct iommu_domain *domain,
-				       struct device *dev)
+				       struct device *dev,
+				       struct iommu_domain *old)
 {
 	return arm_smmu_attach_dev_type(dev, S2CR_TYPE_FAULT);
 }
diff --git a/drivers/iommu/arm/arm-smmu/qcom_iommu.c b/drivers/iommu/arm/arm-smmu/qcom_iommu.c
index c5be95e560317..9222a4a48bb33 100644
--- a/drivers/iommu/arm/arm-smmu/qcom_iommu.c
+++ b/drivers/iommu/arm/arm-smmu/qcom_iommu.c
@@ -359,7 +359,8 @@ static void qcom_iommu_domain_free(struct iommu_domain *domain)
 	kfree(qcom_domain);
 }
 
-static int qcom_iommu_attach_dev(struct iommu_domain *domain, struct device *dev)
+static int qcom_iommu_attach_dev(struct iommu_domain *domain,
+				 struct device *dev, struct iommu_domain *old)
 {
 	struct qcom_iommu_dev *qcom_iommu = dev_iommu_priv_get(dev);
 	struct qcom_iommu_domain *qcom_domain = to_qcom_iommu_domain(domain);
@@ -388,18 +389,18 @@ static int qcom_iommu_attach_dev(struct iommu_domain *domain, struct device *dev
 }
 
 static int qcom_iommu_identity_attach(struct iommu_domain *identity_domain,
-				      struct device *dev)
+				      struct device *dev,
+				      struct iommu_domain *old)
 {
-	struct iommu_domain *domain = iommu_get_domain_for_dev(dev);
 	struct qcom_iommu_domain *qcom_domain;
 	struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
 	struct qcom_iommu_dev *qcom_iommu = dev_iommu_priv_get(dev);
 	unsigned int i;
 
-	if (domain == identity_domain || !domain)
+	if (old == identity_domain || !old)
 		return 0;
 
-	qcom_domain = to_qcom_iommu_domain(domain);
+	qcom_domain = to_qcom_iommu_domain(old);
 	if (WARN_ON(!qcom_domain->iommu))
 		return -EINVAL;
 
diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index 0857519ca7188..e375ced6e2b00 100644
--- a/drivers/iommu/exynos-iommu.c
+++ b/drivers/iommu/exynos-iommu.c
@@ -984,7 +984,8 @@ static void exynos_iommu_domain_free(struct iommu_domain *iommu_domain)
 }
 
 static int exynos_iommu_identity_attach(struct iommu_domain *identity_domain,
-					struct device *dev)
+					struct device *dev,
+					struct iommu_domain *old)
 {
 	struct exynos_iommu_owner *owner = dev_iommu_priv_get(dev);
 	struct exynos_iommu_domain *domain;
@@ -1035,7 +1036,8 @@ static struct iommu_domain exynos_identity_domain = {
 };
 
 static int exynos_iommu_attach_device(struct iommu_domain *iommu_domain,
-				   struct device *dev)
+				      struct device *dev,
+				      struct iommu_domain *old)
 {
 	struct exynos_iommu_domain *domain = to_exynos_domain(iommu_domain);
 	struct exynos_iommu_owner *owner = dev_iommu_priv_get(dev);
@@ -1044,7 +1046,7 @@ static int exynos_iommu_attach_device(struct iommu_domain *iommu_domain,
 	unsigned long flags;
 	int err;
 
-	err = exynos_iommu_identity_attach(&exynos_identity_domain, dev);
+	err = exynos_iommu_identity_attach(&exynos_identity_domain, dev, old);
 	if (err)
 		return err;
 
diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu/fsl_pamu_domain.c
index 5f08523f97cb9..9664ef9840d2c 100644
--- a/drivers/iommu/fsl_pamu_domain.c
+++ b/drivers/iommu/fsl_pamu_domain.c
@@ -238,7 +238,7 @@ static int update_domain_stash(struct fsl_dma_domain *dma_domain, u32 val)
 }
 
 static int fsl_pamu_attach_device(struct iommu_domain *domain,
-				  struct device *dev)
+				  struct device *dev, struct iommu_domain *old)
 {
 	struct fsl_dma_domain *dma_domain = to_fsl_dma_domain(domain);
 	unsigned long flags;
@@ -298,9 +298,9 @@ static int fsl_pamu_attach_device(struct iommu_domain *domain,
  * switches to what looks like BLOCKING.
  */
 static int fsl_pamu_platform_attach(struct iommu_domain *platform_domain,
-				    struct device *dev)
+				    struct device *dev,
+				    struct iommu_domain *old)
 {
-	struct iommu_domain *domain = iommu_get_domain_for_dev(dev);
 	struct fsl_dma_domain *dma_domain;
 	const u32 *prop;
 	int len;
@@ -311,11 +311,11 @@ static int fsl_pamu_platform_attach(struct iommu_domain *platform_domain,
 	 * Hack to keep things working as they always have, only leaving an
 	 * UNMANAGED domain makes it BLOCKING.
 	 */
-	if (domain == platform_domain || !domain ||
-	    domain->type != IOMMU_DOMAIN_UNMANAGED)
+	if (old == platform_domain || !old ||
+	    old->type != IOMMU_DOMAIN_UNMANAGED)
 		return 0;
 
-	dma_domain = to_fsl_dma_domain(domain);
+	dma_domain = to_fsl_dma_domain(old);
 
 	/*
 	 * Use LIODN of the PCI controller while detaching a
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
index e236c7ec221f4..f0396591cd9bb 100644
--- a/drivers/iommu/intel/iommu.c
+++ b/drivers/iommu/intel/iommu.c
@@ -3230,7 +3230,8 @@ void device_block_translation(struct device *dev)
 }
 
 static int blocking_domain_attach_dev(struct iommu_domain *domain,
-				      struct device *dev)
+				      struct device *dev,
+				      struct iommu_domain *old)
 {
 	struct device_domain_info *info = dev_iommu_priv_get(dev);
 
@@ -3537,7 +3538,8 @@ int paging_domain_compatible(struct iommu_domain *domain, struct device *dev)
 }
 
 static int intel_iommu_attach_device(struct iommu_domain *domain,
-				     struct device *dev)
+				     struct device *dev,
+				     struct iommu_domain *old)
 {
 	int ret;
 
@@ -4401,7 +4403,9 @@ static int device_setup_pass_through(struct device *dev)
 				      context_setup_pass_through_cb, dev);
 }
 
-static int identity_domain_attach_dev(struct iommu_domain *domain, struct device *dev)
+static int identity_domain_attach_dev(struct iommu_domain *domain,
+				      struct device *dev,
+				      struct iommu_domain *old)
 {
 	struct device_domain_info *info = dev_iommu_priv_get(dev);
 	struct intel_iommu *iommu = info->iommu;
diff --git a/drivers/iommu/intel/nested.c b/drivers/iommu/intel/nested.c
index 1b6ad9c900a5a..760d7aa2ade84 100644
--- a/drivers/iommu/intel/nested.c
+++ b/drivers/iommu/intel/nested.c
@@ -19,7 +19,7 @@
 #include "pasid.h"
 
 static int intel_nested_attach_dev(struct iommu_domain *domain,
-				   struct device *dev)
+				   struct device *dev, struct iommu_domain *old)
 {
 	struct device_domain_info *info = dev_iommu_priv_get(dev);
 	struct dmar_domain *dmar_domain = to_dmar_domain(domain);
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index ce141f095f969..2ca990dfbb884 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -100,7 +100,7 @@ static int iommu_bus_notifier(struct notifier_block *nb,
 			      unsigned long action, void *data);
 static void iommu_release_device(struct device *dev);
 static int __iommu_attach_device(struct iommu_domain *domain,
-				 struct device *dev);
+				 struct device *dev, struct iommu_domain *old);
 static int __iommu_attach_group(struct iommu_domain *domain,
 				struct iommu_group *group);
 static struct iommu_domain *__iommu_paging_domain_alloc_flags(struct device *dev,
@@ -114,6 +114,7 @@ enum {
 static int __iommu_device_set_domain(struct iommu_group *group,
 				     struct device *dev,
 				     struct iommu_domain *new_domain,
+				     struct iommu_domain *old_domain,
 				     unsigned int flags);
 static int __iommu_group_set_domain_internal(struct iommu_group *group,
 					     struct iommu_domain *new_domain,
@@ -554,7 +555,8 @@ static void iommu_deinit_device(struct device *dev)
 		    release_domain == ops->blocked_domain)
 			release_domain = ops->identity_domain;
 
-		release_domain->ops->attach_dev(release_domain, dev);
+		release_domain->ops->attach_dev(release_domain, dev,
+						group->domain);
 	}
 
 	if (ops->release_device)
@@ -640,7 +642,8 @@ static int __iommu_probe_device(struct device *dev, struct list_head *group_list
 	if (group->default_domain)
 		iommu_create_device_direct_mappings(group->default_domain, dev);
 	if (group->domain) {
-		ret = __iommu_device_set_domain(group, dev, group->domain, 0);
+		ret = __iommu_device_set_domain(group, dev, group->domain, NULL,
+						0);
 		if (ret)
 			goto err_remove_gdev;
 	} else if (!group->default_domain && !group_list) {
@@ -2127,14 +2130,14 @@ static void __iommu_group_set_core_domain(struct iommu_group *group)
 }
 
 static int __iommu_attach_device(struct iommu_domain *domain,
-				 struct device *dev)
+				 struct device *dev, struct iommu_domain *old)
 {
 	int ret;
 
 	if (unlikely(domain->ops->attach_dev == NULL))
 		return -ENODEV;
 
-	ret = domain->ops->attach_dev(domain, dev);
+	ret = domain->ops->attach_dev(domain, dev, old);
 	if (ret)
 		return ret;
 	dev->iommu->attach_deferred = 0;
@@ -2183,7 +2186,7 @@ EXPORT_SYMBOL_GPL(iommu_attach_device);
 int iommu_deferred_attach(struct device *dev, struct iommu_domain *domain)
 {
 	if (dev->iommu && dev->iommu->attach_deferred)
-		return __iommu_attach_device(domain, dev);
+		return __iommu_attach_device(domain, dev, NULL);
 
 	return 0;
 }
@@ -2296,6 +2299,7 @@ EXPORT_SYMBOL_GPL(iommu_attach_group);
 static int __iommu_device_set_domain(struct iommu_group *group,
 				     struct device *dev,
 				     struct iommu_domain *new_domain,
+				     struct iommu_domain *old_domain,
 				     unsigned int flags)
 {
 	int ret;
@@ -2321,7 +2325,7 @@ static int __iommu_device_set_domain(struct iommu_group *group,
 		dev->iommu->attach_deferred = 0;
 	}
 
-	ret = __iommu_attach_device(new_domain, dev);
+	ret = __iommu_attach_device(new_domain, dev, old_domain);
 	if (ret) {
 		/*
 		 * If we have a blocking domain then try to attach that in hopes
@@ -2331,7 +2335,8 @@ static int __iommu_device_set_domain(struct iommu_group *group,
 		if ((flags & IOMMU_SET_DOMAIN_MUST_SUCCEED) &&
 		    group->blocking_domain &&
 		    group->blocking_domain != new_domain)
-			__iommu_attach_device(group->blocking_domain, dev);
+			__iommu_attach_device(group->blocking_domain, dev,[PATCH v1 6/6] iommu: Pass in old domain to attach_dev callback functionsNicolin Chen <nicolinc@nvidia.com> undefined<joro@8bytes.org>, <jgg@nvidia.com>, <kevin.tian@intel.com> undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined