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From: Joerg Roedel <joro@8bytes.org>
To: Lu Baolu <baolu.lu@linux.intel.com>,
	David Woodhouse <dwmw2@infradead.org>
Cc: jroedel@suse.de, iommu@lists.linux-foundation.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH 1/5] iommu/vt-d: Add attach_deferred() helper
Date: Mon, 17 Feb 2020 20:38:54 +0100	[thread overview]
Message-ID: <20200217193858.26990-2-joro@8bytes.org> (raw)
In-Reply-To: <20200217193858.26990-1-joro@8bytes.org>

From: Joerg Roedel <jroedel@suse.de>

Implement a helper function to check whether a device's attach process
is deferred.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
 drivers/iommu/intel-iommu.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 9dc37672bf89..80f2332a5466 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -762,6 +762,11 @@ static int iommu_dummy(struct device *dev)
 	return dev->archdata.iommu == DUMMY_DEVICE_DOMAIN_INFO;
 }
 
+static bool attach_deferred(struct device *dev)
+{
+	return dev->archdata.iommu == DEFER_DEVICE_DOMAIN_INFO;
+}
+
 /**
  * is_downstream_to_pci_bridge - test if a device belongs to the PCI
  *				 sub-hierarchy of a candidate PCI-PCI bridge
@@ -2510,8 +2515,7 @@ struct dmar_domain *find_domain(struct device *dev)
 {
 	struct device_domain_info *info;
 
-	if (unlikely(dev->archdata.iommu == DEFER_DEVICE_DOMAIN_INFO ||
-		     dev->archdata.iommu == DUMMY_DEVICE_DOMAIN_INFO))
+	if (unlikely(attach_deferred(dev) || iommu_dummy(dev)))
 		return NULL;
 
 	if (dev_is_pci(dev))
@@ -2527,7 +2531,7 @@ struct dmar_domain *find_domain(struct device *dev)
 
 static struct dmar_domain *deferred_attach_domain(struct device *dev)
 {
-	if (unlikely(dev->archdata.iommu == DEFER_DEVICE_DOMAIN_INFO)) {
+	if (unlikely(attach_deferred(dev))) {
 		struct iommu_domain *domain;
 
 		dev->archdata.iommu = NULL;
@@ -6133,7 +6137,7 @@ intel_iommu_aux_get_pasid(struct iommu_domain *domain, struct device *dev)
 static bool intel_iommu_is_attach_deferred(struct iommu_domain *domain,
 					   struct device *dev)
 {
-	return dev->archdata.iommu == DEFER_DEVICE_DOMAIN_INFO;
+	return attach_deferred(dev);
 }
 
 static int
-- 
2.17.1

_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu

WARNING: multiple messages have this Message-ID (diff)
From: Joerg Roedel <joro@8bytes.org>
To: Lu Baolu <baolu.lu@linux.intel.com>,
	David Woodhouse <dwmw2@infradead.org>
Cc: Joerg Roedel <joro@8bytes.org>,
	jroedel@suse.de, iommu@lists.linux-foundation.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH 1/5] iommu/vt-d: Add attach_deferred() helper
Date: Mon, 17 Feb 2020 20:38:54 +0100	[thread overview]
Message-ID: <20200217193858.26990-2-joro@8bytes.org> (raw)
In-Reply-To: <20200217193858.26990-1-joro@8bytes.org>

From: Joerg Roedel <jroedel@suse.de>

Implement a helper function to check whether a device's attach process
is deferred.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
 drivers/iommu/intel-iommu.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 9dc37672bf89..80f2332a5466 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -762,6 +762,11 @@ static int iommu_dummy(struct device *dev)
 	return dev->archdata.iommu == DUMMY_DEVICE_DOMAIN_INFO;
 }
 
+static bool attach_deferred(struct device *dev)
+{
+	return dev->archdata.iommu == DEFER_DEVICE_DOMAIN_INFO;
+}
+
 /**
  * is_downstream_to_pci_bridge - test if a device belongs to the PCI
  *				 sub-hierarchy of a candidate PCI-PCI bridge
@@ -2510,8 +2515,7 @@ struct dmar_domain *find_domain(struct device *dev)
 {
 	struct device_domain_info *info;
 
-	if (unlikely(dev->archdata.iommu == DEFER_DEVICE_DOMAIN_INFO ||
-		     dev->archdata.iommu == DUMMY_DEVICE_DOMAIN_INFO))
+	if (unlikely(attach_deferred(dev) || iommu_dummy(dev)))
 		return NULL;
 
 	if (dev_is_pci(dev))
@@ -2527,7 +2531,7 @@ struct dmar_domain *find_domain(struct device *dev)
 
 static struct dmar_domain *deferred_attach_domain(struct device *dev)
 {
-	if (unlikely(dev->archdata.iommu == DEFER_DEVICE_DOMAIN_INFO)) {
+	if (unlikely(attach_deferred(dev))) {
 		struct iommu_domain *domain;
 
 		dev->archdata.iommu = NULL;
@@ -6133,7 +6137,7 @@ intel_iommu_aux_get_pasid(struct iommu_domain *domain, struct device *dev)
 static bool intel_iommu_is_attach_deferred(struct iommu_domain *domain,
 					   struct device *dev)
 {
-	return dev->archdata.iommu == DEFER_DEVICE_DOMAIN_INFO;
+	return attach_deferred(dev);
 }
 
 static int
-- 
2.17.1


  reply	other threads:[~2020-02-17 19:39 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-17 19:38 [PATCH 0/5] iommu/vt-d: Fix kdump boot with VT-d enabled Joerg Roedel
2020-02-17 19:38 ` Joerg Roedel
2020-02-17 19:38 ` Joerg Roedel [this message]
2020-02-17 19:38   ` [PATCH 1/5] iommu/vt-d: Add attach_deferred() helper Joerg Roedel
2020-02-17 19:50   ` Jerry Snitselaar
2020-02-17 19:50     ` Jerry Snitselaar
2020-02-18 17:14   ` Christoph Hellwig
2020-02-18 17:14     ` Christoph Hellwig
2020-02-19  9:29     ` Joerg Roedel
2020-02-19  9:29       ` Joerg Roedel
2020-02-17 19:38 ` [PATCH 2/5] iommu/vt-d: Move deferred device attachment into helper function Joerg Roedel
2020-02-17 19:38   ` Joerg Roedel
2020-02-17 19:50   ` Jerry Snitselaar
2020-02-17 19:50     ` Jerry Snitselaar
2020-02-18 17:16   ` Christoph Hellwig
2020-02-18 17:16     ` Christoph Hellwig
2020-02-17 19:38 ` [PATCH 3/5] iommu/vt-d: Do deferred attachment in iommu_need_mapping() Joerg Roedel
2020-02-17 19:38   ` Joerg Roedel
2020-02-17 19:51   ` Jerry Snitselaar
2020-02-17 19:51     ` Jerry Snitselaar
2020-02-18  2:38   ` Lu Baolu
2020-02-18  2:38     ` Lu Baolu
2020-02-18  9:28     ` [PATCH 3/5 v2] " Joerg Roedel
2020-02-18  9:28       ` Joerg Roedel
2020-02-18 11:54       ` Lu Baolu
2020-02-18 11:54         ` Lu Baolu
2020-02-18 16:22         ` Joerg Roedel
2020-02-18 16:22           ` Joerg Roedel
2020-02-18 15:53       ` Jerry Snitselaar
2020-02-18 15:53         ` Jerry Snitselaar
2020-02-17 19:38 ` [PATCH 4/5] iommu/vt-d: Remove deferred_attach_domain() Joerg Roedel
2020-02-17 19:38   ` Joerg Roedel
2020-02-17 19:51   ` Jerry Snitselaar
2020-02-17 19:51     ` Jerry Snitselaar
2020-02-17 19:38 ` [PATCH 5/5] iommu/vt-d: Simplify check in identity_mapping() Joerg Roedel
2020-02-17 19:38   ` Joerg Roedel
2020-02-17 19:54   ` Jerry Snitselaar
2020-02-17 19:54     ` Jerry Snitselaar

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