Messages in this thread Patch in this message | | | Date | Fri, 19 May 2023 12:12:25 -0700 | From | Nicolin Chen <> | Subject | Re: [PATCH v2 04/11] iommufd: Pass parent hwpt and user_data to iommufd_hw_pagetable_alloc() |
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On Fri, May 19, 2023 at 09:34:38AM +0000, Tian, Kevin wrote:
> > From: Liu, Yi L <yi.l.liu@intel.com> > > Sent: Thursday, May 11, 2023 10:39 PM > > @@ -89,9 +101,15 @@ iommufd_hw_pagetable_alloc(struct iommufd_ctx > > *ictx, struct iommufd_ioas *ioas, > > /* Pairs with iommufd_hw_pagetable_destroy() */ > > refcount_inc(&ioas->obj.users); > > hwpt->ioas = ioas; > > presumably a user hwpt doesn't need store ioas?
hwpt->ioas has the refcount and mutex that are used by a user hwpt too throughout the hwpt functions.
Thanks Nic
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