> From: Nicolin Chen <nicolinc@xxxxxxxxxx> > Sent: Wednesday, December 4, 2024 6:10 AM > > Use it to store all vSMMU-related data. The vsid (Virtual Stream ID) will > be the first use case. Then, add a rw_semaphore to protect it. > > Also add a pair of arm_smmu_attach_prepare/commit_vmaster helpers and > put > them in the existing arm_smmu_attach_prepare/commit(). Note that identity > and blocked ops don't call arm_smmu_attach_prepare/commit(), thus > simply > call the new helpers at the top. Probably a dumb question. viommu is tied to a nested parent domain which cannot be identity or blocked. Why do we need to change them too?
