The VMPIDR_EL2 characteristics are:
- Purpose
- Holds the value of the Virtualization Multiprocessor
ID. This is the value returned by Non-secure EL1 reads of MPIDR_EL1.
- Usage constraints
The accessibility of the VMPIDR_EL2 by Exception
level is:
| EL0 |
EL1(NS) |
EL1(S) |
EL2 |
EL3(SCR.NS = 1) |
EL3(SCR.NS = 0) |
| - |
- |
- |
RW |
RW |
RW |
- Configurations
The VMPIDR_EL2 is Architecturally mapped to the Non-secure AArch32 VMPIDR register.
- Attributes
- See the register summary in Table 4-13 AArch64 virtualization registers.
The following figure shows the
VMPIDR_EL2 bit assignments.
Figure 4-27 VMPIDR_EL2 bit assignments
The following table shows the VMPIDR_EL2
bit assignments.
Table 4-43 VMPIDR_EL2 bit assignments
| Bits |
Name |
Function |
| [63:32] |
- |
Reserved, RES0. |
| [31:0] |
VMPIDR_EL2 |
MPIDR value returned by Non-secure EL1 reads of the MPIDR_EL1. For information on
the subdivision of this value, see 4.5.3 Multiprocessor Affinity Register. |
To access the VMPIDR_EL2 in AArch64 state, read or write the
register with:
MRS <Xt>, VMPIDR_EL1; Read Virtualization Multiprocessor ID Register
MSR VMPIDR_EL1, <Xt>; Write Virtualization Multiprocessor ID Register
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