Change Details

With a dynamic pcpu layout we cannot use startup_alloc() to allocate per-CPU data. The radix SMR structure was the only dynamically allocated per-CPU structure that violated this rule. I think it is preferable to defer creation of SMR structures since startup_alloc() does not provide domain-local memory.

With a dynamic pcpu layout we cannot use startup_alloc() to allocate per-CPU data. The radix SMR structure was the only dynamically allocated per-CPU structure that violated this rule. I think it is preferable to defer creation of SMR structures since startup_alloc() does not provide domain-local memory. Defer initialization of pwd_zone for the same reason. Permit allocation using uma_zalloc_smr() before the SMR structure is attached. This is fine so long as the attach happens before APs are started.

With a dynamic pcpu layout we cannot use startup_alloc() to allocate per-CPU data. The radix SMR structure was the only dynamically allocated per-CPU structure that violated this rule. I think it is preferable to defer creation of SMR structures since startup_alloc() does not provide domain-local memory. Defer initialization of pwd_zone for the same reason. Permit allocation using uma_zalloc_smr() before the SMR structure is attached. This is fine so long as the attach happens before APs are started.