pmpcfg1 PMP Configuration Register 1 PMP entry configuration Attributes CSR Address 0x3a1 Defining extension Smpmp, version >= 0 Length 64-bit Privilege Mode M Format Figure 1. pmpcfg1 format Field Summary Name Location Type Reset Value Fields This CSR has no fields. However, it must still exist (not cause an Illegal Instruction trap) and always return zero on a read.