KVM: arm64: Add hyp_spin_is_locked() for basic locking assertions at EL2

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Introduce hyp_spin_is_locked() so that functions can easily assert that
a given lock is held (albeit possibly by another CPU!) without having to
drag full lockdep support up to EL2.

Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Quentin Perret <qperret@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210809152448.1810400-2-qperret@google.com

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Will Deacon 2021-08-09 16:24:28 +01:00 • committed by Marc Zyngier

parent 63db506e07

commit d21292f13f

1 changed files with 8 additions and 0 deletions

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arch/arm64/kvm/hyp/include/nvhe/spinlock.h

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