[PATCH v6 10/26] KVM: arm64: Add hyp_spinlock_t static initializer

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



From: Fuad Tabba <tabba@xxxxxxxxxx>

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@xxxxxxxxxx>
Tested-by: Vincent Donnefort <vdonnefort@xxxxxxxxxx>
Signed-off-by: Fuad Tabba <tabba@xxxxxxxxxx>
Signed-off-by: Will Deacon <will@xxxxxxxxxx>
---
 arch/arm64/kvm/hyp/include/nvhe/spinlock.h | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/kvm/hyp/include/nvhe/spinlock.h b/arch/arm64/kvm/hyp/include/nvhe/spinlock.h
index 4652fd04bdbe..7c7ea8c55405 100644
--- a/arch/arm64/kvm/hyp/include/nvhe/spinlock.h
+++ b/arch/arm64/kvm/hyp/include/nvhe/spinlock.h
@@ -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)
-- 
2.38.1.431.g37b22c650d-goog




[Index of Archives]     [KVM ARM]     [KVM ia64]     [KVM ppc]     [Virtualization Tools]     [Spice Development]     [Libvirt]     [Libvirt Users]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite Questions]     [Linux Kernel]     [Linux SCSI]     [XFree86]

  Powered by Linux