[PATCH v1 03/57] xen/riscv: introduce spinlock.h

[Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>]

Signed-off-by: Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
---
 xen/arch/riscv/include/asm/spinlock.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/spinlock.h

diff --git a/xen/arch/riscv/include/asm/spinlock.h 
b/xen/arch/riscv/include/asm/spinlock.h
new file mode 100644
index 0000000000..8e61a88c3d
--- /dev/null
+++ b/xen/arch/riscv/include/asm/spinlock.h
@@ -0,0 +1,13 @@
+#ifndef __ASM_RISCV_SPINLOCK_H
+#define __ASM_RISCV_SPINLOCK_H
+
+#define arch_lock_acquire_barrier() smp_mb()
+#define arch_lock_release_barrier() smp_mb()
+
+#define arch_lock_relax() cpu_relax()
+#define arch_lock_signal() do { \
+} while(0)
+
+#define arch_lock_signal_wmb()  arch_lock_signal()
+
+#endif /* __ASM_RISCV_SPINLOCK_H */
-- 
2.41.0