Messages in this thread Patch in this message |  | | From | Fenghua Yu <> | Subject | [PATCH v4 03/11] iommu/ioasid: Introduce a helper to check for valid PASIDs | Date | Mon, 7 Feb 2022 15:02:46 -0800 |
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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 */ -- 2.35.1
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