> From: Lu Baolu <baolu...@linux.intel.com> > Sent: Tuesday, June 14, 2022 10:52 AM > > The iommu->lock is used to protect the per-IOMMU domain ID resource. > Moving the lock into the ID alloc/free helpers makes the code more > compact. At the same time, the device_domain_lock is irrelevant to > the domain ID resource, remove its assertion as well. > > On the other hand, the iommu->lock is never used in interrupt context, > there's no need to use the irqsave variant of the spinlock calls.
I still prefer to separating reduction of lock ranges from changing irqsave. Locking is tricky. From bisect p.o.v. it will be a lot easier if we just change one logic in one patch. _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
