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The PMVIDSR characteristics are:
Contains the sampled VMID value that is captured on reading PMU.PMPCSR[31:0].PMPCSR[31:0].
This register is present only when FEAT_PMUv3_EXT32 is implemented, FEAT_PCSRv8p2 is implemented and EL2 is implemented. Otherwise, direct accesses to PMVIDSR are RES0.
PMVIDSR is in the Core power domain.
This register is present only when FEAT_PCSRv8p2 is implemented and EL2 is implemented. Otherwise, direct accesses to PMVIDSR are RES0.
Before Armv8.2, the PC Sample-based Profiling Extension can be implemented in the external debug register space, as indicated by the value of EDDEVID.PCSample.
PMVIDSR is a 32-bit register.
This register is part of the PMU block.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
RES0 | VMID[15:8] | VMID |
Reserved, RES0.
Extension to VMID[7:0]. For more information, see VMID[7:0].
The reset behavior of this field is:
Reserved, RES0.
VMID sample. The VMID associated with the most recent PMU.PMPCSR sample. When the most recent PMU.PMPCSR sample was generated:PMPCSR sample. When the most recent PMPCSR sample was generated:
Because the value written to PMVIDSR is an indirect read of the VMID value, it is CONSTRAINED UNPREDICTABLE whether PMVIDSR is set to the original or new value if PMU.PMPCSR samples:PMPCSR samples:
The reset behavior of this field is:
IMPLEMENTATION DEFINED extensions to external debug might make the value of this register UNKNOWN, see 'Permitted behavior that might make the PC Sample-based profiling registers UNKNOWN'.
This interface is accessible as follows:
IMPLEMENTATION DEFINED extensions to external debug might make the value of this register UNKNOWN, see 'Permitted behavior that might make the PC Sample-based profiling registers UNKNOWN'.
Accesses to this register use the following encodings in the external debug interface:
PMVIDSR can be accessed through the PMU block as follows:
Frame | Offset |
---|---|
PMU | 0x20C |
3005/0907/2022 1517:5707; 21c5a6dd0fdaf10a712e2f2d6fffbdbd66d4d96fb0421fa9a8865165f9b91af9b4a566111f866305
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