KVM: arm64: Use BUG and BUG_ON in nVHE hyp

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hyp_panic() reports the address of the panic by using ELR_EL2, but this
isn't a useful address when hyp_panic() is called directly. Replace such
direct calls with BUG() and BUG_ON() which use BRK to trigger an
exception that then goes to hyp_panic() with the correct address. Also
remove the hyp_panic() declaration from the header file to avoid
accidental misuse.

Signed-off-by: Andrew Scull <ascull@google.com>
Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210318143311.839894-5-ascull@google.com

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Andrew Scull 2021-03-18 14:33:10 +00:00 • committed by Marc Zyngier

parent 5b8be5d875

commit f79e616f27

3 changed files with 3 additions and 6 deletions

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1

arch/arm64/include/asm/kvm_hyp.h

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2

arch/arm64/kvm/hyp/nvhe/hyp-main.c

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6

arch/arm64/kvm/hyp/nvhe/hyp-smp.c

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