iommu/vt-d: Avoid calling virt_to_phys() on null pointer

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New kernels with debug show panic() from __phys_addr() checks. Avoid
calling virt_to_phys()  when pasid_state_tbl pointer is null

To: Joerg Roedel <joro@8bytes.org>
To: linux-kernel@vger.kernel.org>
Cc: iommu@lists.linux-foundation.org
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Jacob Pan <jacob.jun.pan@intel.com>
Cc: Ashok Raj <ashok.raj@intel.com>

Fixes: 2f26e0a9c9 ('iommu/vt-d: Add basic SVM PASID support')
Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Acked-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

...

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Ashok Raj 2017-08-08 13:29:28 -07:00 • committed by Joerg Roedel

parent 9d8c3af316

commit 11b93ebfa0

1 changed files with 2 additions and 1 deletions

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drivers/iommu/intel-iommu.c

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