hstateen0 is a hypervisor state-enable CSR.
Controls VM access to custom state.
C (bit 63) — Controls VM access to custom state.
The VM cannot access the corresponding custom state; related accesses trap under state-enable rules.
Allows the VM to access the corresponding custom state.
Controls VM access to siselect/sireg* aliases, which reach VS indirect CSR state.
CSRIND (bit 60) — Controls VM access to siselect/sireg* aliases, which reach VS indirect CSR state.
The VM cannot access VS indirect CSR alias state; related accesses trap under state-enable rules.
Allows the VM to access VS indirect CSR alias state.
Controls VM access to AIA state not covered by CSRIND or IMSIC.
AIA (bit 59) — Controls VM access to AIA state not covered by CSRIND or IMSIC.
The VM cannot access the AIA state controlled by this bit; related accesses trap under state-enable rules.
Allows the VM to access the AIA state controlled by this bit.
Controls VM access to guest IMSIC state, including stopei, which reaches vstopei.
IMSIC (bit 58) — Controls VM access to guest IMSIC state, including stopei, which reaches vstopei.
The VM cannot access guest IMSIC state; related accesses trap under state-enable rules.
Allows the VM to access guest IMSIC state.
Controls VM access to context state such as scontext.
CONTEXT (bit 57) — Controls VM access to context state such as scontext.
The VM cannot access context state such as scontext; related accesses trap under state-enable rules.
Allows the VM to access context state such as scontext.
Controls access to Privileged 1.13 related state; confirm portable Hypervisor-side meaning against the current official extension and implementation.
P1P13 (bit 56) — Controls access to Privileged 1.13 related state; confirm portable Hypervisor-side meaning against the current official extension and implementation.
This field is better understood together with surrounding context than as a fixed memorized enumeration.
↗Open Official ManualControls VM access to environment-configuration state such as senvcfg.
ENVCFG (bit 55) — Controls VM access to environment-configuration state such as senvcfg.
The VM cannot access environment-configuration state such as senvcfg; related accesses trap under state-enable rules.
Allows the VM to access environment-configuration state such as senvcfg.
Controls VS/VU access to sstateen0 and the next-level state-enable state.
SE0 (bit 0) — Controls VS/VU access to sstateen0 and the next-level state-enable state.
VS/VU cannot access sstateen0 or next-level state-enable state; related accesses trap under Smstateen/Ssstateen state-enable rules.
Allows VS/VU to access sstateen0 or next-level state-enable state when other access rules also permit it.
hstateen0 is a hypervisor state-enable CSR. It is HS/M-side hypervisor state, not a VS supervisor CSR copy; guest access is governed by the H extension and relevant state-enable, AIA, Sstc, or Smcsrind rules.
Confirm the current software is in an M/HS context that may access Hypervisor CSRs.
Confirm that the H, AIA, Sstc, Smstateen, Smcsrind, or other defining extension is implemented.
Read or write only official fields; whether guest-related access succeeds or traps is controlled by the corresponding extension rules and state-enable state.
Do not treat hstateen0 as a VS CSR copy. It is an H-level CSR; whether guest/VS access to related functionality traps is defined by the H extension and the relevant optional extension.
They control VM access to AIA, guest IMSIC, and indirect CSR alias state, respectively.