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Hi all,
I want to trap the non-secure access of several system registers (TTBR0_EL2, VTTBR_EL2, HCR_EL2, etc.) to EL3. However, when I look up the ARMv8-A reference manual, I cannot find some useful information. It seems that the ARMv8-A only supports trapping the access of EL1 TTBR registers to EL2 (with HCR_EL2), but not for EL3.
How can I do it?
Maybe it is difficult. But if the EL3 knows any Write operation to the system registers above, it is also acceptable.