> From: Jason Gunthorpe <jgg@xxxxxxxxxx>
> Sent: Friday, April 21, 2023 2:51 AM
>
> During creation the hwpt must have the ioas->mutex held until the object
> is finalized. This means we need to be able to call
> iommufd_object_abort_and_destroy() while holding the mutex.
>
> Since iommufd_hw_pagetable_destroy() also needs the mutex this is
> problematic.
>
> Fix it by creating a special abort op for the object that can assume the
> caller is holding the lock, as required by the contract.
>
> The next patch will add another iommufd_object_abort_and_destroy() for a
> hwpt.
>
> Fixes: e8d57210035b ("iommufd: Add kAPI toward external drivers for
> physical devices")
> Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>
