Re: [PATCH 1/1] iommu/amd: Use delayed mmu release notifier

[Joerg Roedel <joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>]

On Thu, Nov 06, 2014 at 03:48:51PM +0200, Oded Gabbay wrote:
> What do you mean ? I don't see I change anything in the API. All the
> changes are internal to amd_iommu_unbind_pasid(). I don't think
> *anyone* calling to amd_iommu_unbind_pasid() will care or will
> notice the slight change in timing of releasing the pasid_state
> object (instead of immediate release, it is released after the
> iteration on the mmu_notifier list has finished)

The API change is that this patch modifies amd_iommu_unbind_pasid() so
that it could be called from an mmu_notifier_release call-back (which is
not possible right now). It does that by adding just another layer of
call-backs and complicates the code. I'd like to keep that outside of
the IOMMUv2 driver.


	Joerg