minstretcfg

Machine Instructions-Retired Counter Configuration

The minstretcfg CSR is a 64-bit machine-level register that configures privilege mode filtering for the minstret (Machine Instructions-Retired Counter). Each inhibit bit (xINH) disables counting of retired instructions in the associated privilege mode.

| Field | Description | |---------|-----------------------------------------------------------| | MINH | If set, then counting of events in M-mode is inhibited. | | SINH | If set, then counting of events in S/HS-mode is inhibited. | | UINH | If set, then counting of events in U-mode is inhibited. | | VSINH | If set, then counting of events in VS-mode is inhibited. | | VUINH | If set, then counting of events in VU-mode is inhibited. |

When all inhibit bits are clear, instruction retirement is counted in all privilege modes.

For each bit in 61:58, if the associated privilege mode is not implemented, the bit is read-only zero.

Bit 63 (OF) always reads as zero, indicating that the counter does not generate overflow interrupts.

Bits [57:0] are reserved (WPRI) and read as zero; writes are ignored.

For RV32 systems, the upper 32 bits of minstretcfg are accessible via the minstretcfgh CSR (0x722).

Attributes

CSR Address	0x322
Defining extension	Smcntrpmf, version >= Smcntrpmf@1.0.0
Length	64-bit
Privilege Mode	M

CSR Address

0x322

Defining extension

Smcntrpmf, version >= Smcntrpmf@1.0.0

Length

64-bit

Privilege Mode

Format

Figure 1. minstretcfg format

Field Summary

Name Location Type Reset Value

Name	Location	Type	Reset Value
`MINH`	62	RW	UNDEFINED_LEGAL
`SINH`	61	RW	UNDEFINED_LEGAL
`UINH`	60	RW	UNDEFINED_LEGAL
`VSINH`	59	RW	UNDEFINED_LEGAL
`VUINH`	58	RW	UNDEFINED_LEGAL

MINH

UNDEFINED_LEGAL

SINH

UNDEFINED_LEGAL

UINH

UNDEFINED_LEGAL

VSINH

UNDEFINED_LEGAL

VUINH

UNDEFINED_LEGAL

Fields

`MINH`

Location: minstretcfg[62]
Description: If set, then counting of events in M-mode is inhibited.
Type

RW	Read-Write Field is writable by software. Any value that fits in the field is acceptable and shall be retained for subsequent reads.

Reset value: UNDEFINED_LEGAL

`SINH`

Location: minstretcfg[61]
Description: If set, then counting of events in S/HS-mode is inhibited.
Type

RW	Read-Write Field is writable by software. Any value that fits in the field is acceptable and shall be retained for subsequent reads.

Reset value: UNDEFINED_LEGAL

`UINH`

Location: minstretcfg[60]
Description: If set, then counting of events in U-mode is inhibited.
Type

RW	Read-Write Field is writable by software. Any value that fits in the field is acceptable and shall be retained for subsequent reads.

Reset value: UNDEFINED_LEGAL

`VSINH`

Location: minstretcfg[59]
Description: If set, then counting of events in VS-mode is inhibited.
Type

RW	Read-Write Field is writable by software. Any value that fits in the field is acceptable and shall be retained for subsequent reads.

Reset value: UNDEFINED_LEGAL

`VUINH`

Location: minstretcfg[58]
Description: If set, then counting of events in VU-mode is inhibited.
Type

RW	Read-Write Field is writable by software. Any value that fits in the field is acceptable and shall be retained for subsequent reads.

Reset value: UNDEFINED_LEGAL