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 <j...@8bytes.org>
To: David Woodhouse <dw...@infradead.org>
Cc: io...@lists.linux-foundation.org
Cc: linux-kernel@vger.kernel.org
Cc: sta...@vger.kernel.org
Cc: Ashok Raj <ashok....@intel.com>
Fixes: 86080ccc22 ("iommu/vt-d: Allocate si_domain in init_dmars()")
Signed-off-by: Ashok Raj <ashok....@intel.com>
Reported-by: Yunhong Jiang <yunhong.ji...@intel.com>
---
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
