mhpmevent18h

Machine Hardware Performance Counter 18 Control, High half

Alias of mhpmevent18[63:32].

Introduced with the Sscofpmf extension. Prior to that, there was no way to access the upper 32-bits of mhpmevent#{hpm_num}.

Attributes

CSR Address

0x732

Defining extension

  • Sscofpmf, version >= 0

Length

32-bit

Privilege Mode

M

Format

mhpmevent18h format
Figure 1. mhpmevent18h 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.