Re: [PATCH 2/2] iommu/vt-d: Helper function to query if a pasid has any active users

[Joerg Roedel]

On Wed, May 10, 2017 at 11:39:03AM -0700, Ashok Raj wrote:
> From: CQ Tang <cq.tang@xxxxxxxxx>
> 
> A driver would need to know if there are any active references to a
> a PASID before cleaning up its resources. This function helps check
> if there are any active users of a PASID before it can perform any
> recovery on that device.
> 
> To: Joerg Roedel <joro@xxxxxxxxxx>
> To: linux-kernel@xxxxxxxxxxxxxxx
> To: David Woodhouse <dwmw2@xxxxxxxxxxxxx>
> Cc: Jean-Phillipe Brucker <jean-philippe.brucker@xxxxxxx>
> Cc: iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx
> 
> Signed-off-by: CQ Tang <cq.tang@xxxxxxxxx>
> Signed-off-by: Ashok Raj <ashok.raj@xxxxxxxxx>
> ---
>  drivers/iommu/intel-svm.c | 30 ++++++++++++++++++++++++++++++
>  include/linux/intel-svm.h | 20 ++++++++++++++++++++
>  2 files changed, 50 insertions(+)

Applied, thanks.