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FROMLIST: KVM: arm64: Add hyp_spinlock_t static initializer

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Introduce a static initializer macro for 'hyp_spinlock_t' so that it is
straightforward to instantiate global locks at EL2. This will be later
utilised for locking the VM table in the hypervisor.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Vincent Donnefort <vdonnefort@google.com>
Signed-off-by: Fuad Tabba <tabba@google.com>
Signed-off-by: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20221020133827.5541-11-will@kernel.org
Signed-off-by: Will Deacon <willdeacon@google.com>
Bug: 233587962
Change-Id: I5055011c6eb4376922e5b06871fa4bb3528f4e8f
This commit is contained in:
Fuad Tabba
2022-10-20 14:38:12 +01:00
committed by Will Deacon
parent aa8cd87455
commit 98c692f62a
1 changed files with 9 additions and 1 deletions
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10
arch/arm64/kvm/hyp/include/nvhe/spinlock.h
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@@ -28,9 +28,17 @@ typedef union hyp_spinlock {
};
} hyp_spinlock_t;
#define __HYP_SPIN_LOCK_INITIALIZER \
{ .__val = 0 }
#define __HYP_SPIN_LOCK_UNLOCKED \
((hyp_spinlock_t) __HYP_SPIN_LOCK_INITIALIZER)
#define DEFINE_HYP_SPINLOCK(x) hyp_spinlock_t x = __HYP_SPIN_LOCK_UNLOCKED
#define hyp_spin_lock_init(l) \
do { \
*(l) = (hyp_spinlock_t){ .__val = 0 }; \
*(l) = __HYP_SPIN_LOCK_UNLOCKED; \
} while (0)
static inline void hyp_spin_lock(hyp_spinlock_t *lock)