diff --git a/src/runtime/internal/atomic/atomic_loong64.go b/src/runtime/internal/atomic/atomic_loong64.go
index 908a7d69aa..d82a5b8e2a 100644
--- a/src/runtime/internal/atomic/atomic_loong64.go
+++ b/src/runtime/internal/atomic/atomic_loong64.go
@@ -41,6 +41,9 @@ func Loadp(ptr unsafe.Pointer) unsafe.Pointer
 //go:noescape
 func LoadAcq(ptr *uint32) uint32
 
+//go:noescape
+func LoadAcq64(ptr *uint64) uint64
+
 //go:noescape
 func LoadAcquintptr(ptr *uintptr) uintptr
 
@@ -79,5 +82,8 @@ func StorepNoWB(ptr unsafe.Pointer, val unsafe.Pointer)
 //go:noescape
 func StoreRel(ptr *uint32, val uint32)
 
+//go:noescape
+func StoreRel64(ptr *uint64, val uint64)
+
 //go:noescape
 func StoreReluintptr(ptr *uintptr, val uintptr)
diff --git a/src/runtime/internal/atomic/atomic_loong64.s b/src/runtime/internal/atomic/atomic_loong64.s
index bfb6c7e130..3d802beaa7 100644
--- a/src/runtime/internal/atomic/atomic_loong64.s
+++ b/src/runtime/internal/atomic/atomic_loong64.s
@@ -156,6 +156,9 @@ TEXT ·StorepNoWB(SB), NOSPLIT, $0-16
 TEXT ·StoreRel(SB), NOSPLIT, $0-12
 	JMP	·Store(SB)
 
+TEXT ·StoreRel64(SB), NOSPLIT, $0-16
+	JMP	·Store64(SB)
+
 TEXT ·StoreReluintptr(SB), NOSPLIT, $0-16
 	JMP     ·Store64(SB)
 
@@ -293,6 +296,10 @@ TEXT ·Loadp(SB),NOSPLIT|NOFRAME,$0-16
 TEXT ·LoadAcq(SB),NOSPLIT|NOFRAME,$0-12
 	JMP	atomic·Load(SB)
 
+// uint64 ·LoadAcq64(uint64 volatile* ptr)
+TEXT ·LoadAcq64(SB),NOSPLIT|NOFRAME,$0-16
+	JMP	atomic·Load64(SB)
+
 // uintptr ·LoadAcquintptr(uintptr volatile* ptr)
 TEXT ·LoadAcquintptr(SB),NOSPLIT|NOFRAME,$0-16
 	JMP     atomic·Load64(SB)
diff --git a/src/runtime/internal/atomic/types_64bit.go b/src/runtime/internal/atomic/types_64bit.go
index fda2de9cc4..006e83ba87 100644
--- a/src/runtime/internal/atomic/types_64bit.go
+++ b/src/runtime/internal/atomic/types_64bit.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build amd64 || arm64 || mips64 || mips64le || ppc64 || ppc64le || riscv64 || s390x || wasm
+//go:build amd64 || arm64 || loong64 || mips64 || mips64le || ppc64 || ppc64le || riscv64 || s390x || wasm
 
 package atomic