Messages in this thread |  | | Date | Tue, 8 Feb 2022 10:40:49 +0800 | Subject | Re: [PATCH v4 03/11] iommu/ioasid: Introduce a helper to check for valid PASIDs | From | Lu Baolu <> |
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On 2/8/22 7:02 AM, Fenghua Yu wrote: > pasid_valid() is defined to check if a given PASID is valid. > > Suggested-by: Ashok Raj <ashok.raj@intel.com> > Suggested-by: Jacob Pan <jacob.jun.pan@linux.intel.com> > Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> > Reviewed-by: Tony Luck <tony.luck@intel.com> > Reviewed-by: Thomas Gleixner <tglx@linutronix.de> > --- > v4: > - Add "Reviewed-by: Thomas Gleixner <tglx@linutronix.de>" (Thomas). > > v2: > - Define a helper pasid_valid() (Ashok, Jacob, Thomas, Tony) > > include/linux/ioasid.h | 9 +++++++++ > 1 file changed, 9 insertions(+) > > diff --git a/include/linux/ioasid.h b/include/linux/ioasid.h > index e9dacd4b9f6b..2237f64dbaae 100644 > --- a/include/linux/ioasid.h > +++ b/include/linux/ioasid.h > @@ -41,6 +41,10 @@ void *ioasid_find(struct ioasid_set *set, ioasid_t ioasid, > int ioasid_register_allocator(struct ioasid_allocator_ops *allocator); > void ioasid_unregister_allocator(struct ioasid_allocator_ops *allocator); > int ioasid_set_data(ioasid_t ioasid, void *data); > +static inline bool pasid_valid(ioasid_t ioasid) > +{ > + return ioasid != INVALID_IOASID; > +} > > #else /* !CONFIG_IOASID */ > static inline ioasid_t ioasid_alloc(struct ioasid_set *set, ioasid_t min, > @@ -78,5 +82,10 @@ static inline int ioasid_set_data(ioasid_t ioasid, void *data) > return -ENOTSUPP; > } > > +static inline bool pasid_valid(ioasid_t ioasid) > +{ > + return false; > +} > + > #endif /* CONFIG_IOASID */ > #endif /* __LINUX_IOASID_H */
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Best regards, baolu
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