Re: [PATCH 04/13] target/arm: Allow access to SPSR_hyp from hyp mode

On 2/6/24 23:29, Peter Maydell wrote: Architecturally, the AArch32 MSR/MRS to/from banked register instructions are UNPREDICTABLE for attempts to access a banked register that the guest could access in a more direct way (e.g. using this insn to access r8_fiq when already in FIQ mode). QEMU has c

[PATCH 04/13] target/arm: Allow access to SPSR_hyp from hyp mode

Architecturally, the AArch32 MSR/MRS to/from banked register instructions are UNPREDICTABLE for attempts to access a banked register that the guest could access in a more direct way (e.g. using this insn to access r8_fiq when already in FIQ mode). QEMU has chosen to UNDEF on all of these. However