[Bug 1855072] [NEW] ARM: HCR.TVM traps are not implemented

[Julien Freche]

Public bug reported:

On AARCH64, setting HCR.TVM to 1 is supposed to trap all writes to
CTLR_EL1, TTBR0_EL1, TTBR1_EL1, TCR_EL1, ESR_EL1, FAR_EL1, AFSR0_EL1,
AFSR1_EL1, MAIR_EL1, AMAIR_EL1, and CONTEXTIDR_EL1. However, it
currently has no effect (QEMU emulator version 4.1.1).

It is also likely that TRVM will not trap, but, I didn't verify this.

** Affects: qemu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1855072

Title:
  ARM: HCR.TVM traps are not implemented

Status in QEMU:
  New

Bug description:
  On AARCH64, setting HCR.TVM to 1 is supposed to trap all writes to
  CTLR_EL1, TTBR0_EL1, TTBR1_EL1, TCR_EL1, ESR_EL1, FAR_EL1, AFSR0_EL1,
  AFSR1_EL1, MAIR_EL1, AMAIR_EL1, and CONTEXTIDR_EL1. However, it
  currently has no effect (QEMU emulator version 4.1.1).

  It is also likely that TRVM will not trap, but, I didn't verify this.

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