D22966.id66290.diff
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	Index: head/sys/arm64/include/atomic.h
	===================================================================
	--- head/sys/arm64/include/atomic.h
	+++ head/sys/arm64/include/atomic.h
	@@ -448,6 +448,34 @@
	return (ret);
	}

	+static __inline uint8_t
	+atomic_load_acq_8(volatile uint8_t *p)
	+{
	+ uint8_t ret;
	+
	+ __asm __volatile(
	+ "ldarb %w0, [%1] \n"
	+ : "=&r" (ret)
	+ : "r" (p)
	+ : "memory");
	+
	+ return (ret);
	+}
	+
	+static __inline uint16_t
	+atomic_load_acq_16(volatile uint16_t *p)
	+{
	+ uint16_t ret;
	+
	+ __asm __volatile(
	+ "ldarh %w0, [%1] \n"
	+ : "=&r" (ret)
	+ : "r" (p)
	+ : "memory");
	+
	+ return (ret);
	+}
	+
	static __inline uint32_t
	atomic_load_acq_32(volatile uint32_t *p)
	{
	@@ -474,6 +502,28 @@
	: "memory");

	return (ret);
	+}
	+
	+static __inline void
	+atomic_store_rel_8(volatile uint8_t *p, uint8_t val)
	+{
	+
	+ __asm __volatile(
	+ "stlrb %w0, [%1] \n"
	+ :
	+ : "r" (val), "r" (p)
	+ : "memory");
	+}
	+
	+static __inline void
	+atomic_store_rel_16(volatile uint16_t *p, uint16_t val)
	+{
	+
	+ __asm __volatile(
	+ "stlrh %w0, [%1] \n"
	+ :
	+ : "r" (val), "r" (p)
	+ : "memory");
	}

	static __inline void