Commit 1c80002e authored by Fuad Tabba's avatar Fuad Tabba Committed by Marc Zyngier
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KVM: arm64: Add hyp_spinlock_t static initializer 



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: default avatarPhilippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: default avatarVincent Donnefort <vdonnefort@google.com>
Signed-off-by: default avatarFuad Tabba <tabba@google.com>
Signed-off-by: default avatarWill Deacon <will@kernel.org>
Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20221110190259.26861-11-will@kernel.org
parent 4d968b12

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

+9 −1
Original line number Diff line number Diff line
@@ -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)