4.3.26. Virtualization Multiprocessor ID Register

The VMPIDR characteristics are:


Provides the value of the Virtualization Multiprocessor ID.

Usage constraints

The VMPIDR is:

  • A read/write register.

  • Only accessible from Hyp mode or from Monitor mode when SCR.NS is 1.


Available in all configurations.


See the register summary in Table 4.2.

Figure 4.22 shows the VMPIDR bit assignments.

Figure 4.22. VMPIDR bit assignments

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Table 4.51 shows the VMPIDR bit assignments.

Table 4.51. VMPIDR bit assignments


MPIDR value returned by Non-secure reads of the MPIDR from PL1

To access the VMPIDR, read or write the CP15 register with:

MRC p15, 4, <Rt>, c0, c0, 5; Read Virtualization Multiprocessor ID Register
MCR p15, 4, <Rt>, c0, c0, 5; Write Virtualization Multiprocessor ID Register
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