[PATCH 2/2] iommu/vt-d: tylersburg isoch identity map check is done too late.

2017-01-30 Thread Ashok Raj 
The check to set identity map for tylersburg is done too late. It needs
to be done before the check for identity_map domain is done.

To: Joerg Roedel 
To: David Woodhouse 
Cc: io...@lists.linux-foundation.org
Cc: linux-kernel@vger.kernel.org
Cc: sta...@vger.kernel.org
Cc: Ashok Raj 

Fixes: 86080ccc22 ("iommu/vt-d: Allocate si_domain in init_dmars()")
Signed-off-by: Ashok Raj 
Reported-by: Yunhong Jiang 
---
 drivers/iommu/intel-iommu.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 8a18525..23eead3 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -3325,13 +3325,14 @@ static int __init init_dmars(void)
iommu_identity_mapping |= IDENTMAP_GFX;
 #endif
 
+   check_tylersburg_isoch();
+
if (iommu_identity_mapping) {
ret = si_domain_init(hw_pass_through);
if (ret)
goto free_iommu;
}
 
-   check_tylersburg_isoch();
 
/*
 * If we copied translations from a previous kernel in the kdump
-- 
2.7.4

[PATCH 2/2] iommu/vt-d: tylersburg isoch identity map check is done too late.

2017-01-27 Thread Ashok Raj 
The check to set identity map for tylersburg is done too late. It needs
to be done before the check for identity_map domain is done.

To: Joerg Roedel 
To: David Woodhouse 
Cc: io...@lists.linux-foundation.org
Cc: linux-kernel@vger.kernel.org
Cc: sta...@vger.kernel.org
Cc: Ashok Raj 

Signed-off-by: Ashok Raj 
Reported-by: Yunhong Jiang 
---
 drivers/iommu/intel-iommu.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 8a18525..23eead3 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -3325,13 +3325,14 @@ static int __init init_dmars(void)
iommu_identity_mapping |= IDENTMAP_GFX;
 #endif
 
+   check_tylersburg_isoch();
+
if (iommu_identity_mapping) {
ret = si_domain_init(hw_pass_through);
if (ret)
goto free_iommu;
}
 
-   check_tylersburg_isoch();
 
/*
 * If we copied translations from a previous kernel in the kdump
-- 
2.7.4

[PATCH 2/2] iommu/vt-d: tylersburg isoch identity map check is done too late.

2017-01-26 Thread Ashok Raj 
The check to set identity map for tylersburg is done too late. It needs
to be done before the check for identity_map domain is done.

To: Joerg Roedel 
To: David Woodhouse 
Cc: io...@lists.linux-foundation.org
Cc: linux-kernel@vger.kernel.org
Cc: sta...@vger.kernel.org
Cc: Ashok Raj 

Signed-off-by: Ashok Raj 
Reported-by: Yunhong Jiang 
---
 drivers/iommu/intel-iommu.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 8a18525..23eead3 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -3325,13 +3325,14 @@ static int __init init_dmars(void)
iommu_identity_mapping |= IDENTMAP_GFX;
 #endif
 
+   check_tylersburg_isoch();
+
if (iommu_identity_mapping) {
ret = si_domain_init(hw_pass_through);
if (ret)
goto free_iommu;
}
 
-   check_tylersburg_isoch();
 
/*
 * If we copied translations from a previous kernel in the kdump
-- 
2.7.4