iommu/amd: Don't set pasid_state->mm to NULL in unbind_pasid

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With calling te mmu_notifier_register function we hold a
reference to the mm_struct that needs to be released in
mmu_notifier_unregister. This is true even if the notifier
was already unregistered from exit_mmap and the .release
call-back has already run.

So make sure we call mmu_notifier_unregister unconditionally
in amd_iommu_unbind_pasid.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Tested-by: Oded Gabbay <oded.gabbay@amd.com>

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Joerg Roedel 2014-07-30 16:04:37 +02:00

parent d9e1611e73

commit fcaa960608

1 changed files with 3 additions and 17 deletions

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drivers/iommu/amd_iommu_v2.c

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