KVM: arm64: Inject UNDEF for a register trap without accessor

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Configuring a register trap without specifying an accessor function is
abviously a bug. Instead of calling die() when that happens, let's be a
bit more helpful and print the register encoding. Also inject an
undefined instruction exception in the guest, similar to other unhandled
register accesses.

Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Tested-by: Fuad Tabba <tabba@google.com>
Reviewed-by: Fuad Tabba <tabba@google.com>
Link: https://msgid.link/20251216103053.47224-3-alexandru.elisei@arm.com
Signed-off-by: Oliver Upton <oupton@kernel.org>

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Alexandru Elisei 2025-12-16 10:30:51 +00:00 • committed by Oliver Upton

parent 145cc42fe1

commit aba963cb98

1 changed files with 4 additions and 1 deletions

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arch/arm64/kvm/sys_regs.c

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